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www.semtech.com /products/ page 1 advanced communications & sensing datasheet SX8124 24 hours timer synchr onized on 50/60hz mains acs - revision 2.4 october 2010 ? semtech corp. description features the SX8124 is 24 hours timer with an analog programmable duty cycle that synchonizes on european standard (220 v/50hz) and us standard (110v/60hz) mains for high timing precision without calibration or resonator. the SX8124 starts counting time when connected to the mains, its internal counter can be reset on the press of a button (optional) or by setting the duration to zero. the SX8124 duty cycle is set using one single resistive divider. its output can be forced on or off with the press of the optional button. SX8124 outputs are complementary to simplify the connection of switches and an optional led can confirm the timer status. 24 hours timer synchronized on mains frequency analog period setting automatic 50 hz and 60 hz detection simplest usage manual on/off/reset option led status option applications mosquito repellent odor killers illuminated decoration xmas animation ordering information part number function package SX8124istrt 24 hours timer soic-8 - available in tape and reel only - weee/rohs compliant. pb-free and halogen free. functional bloc diagram phase duration vss vdd out nout led start SX8124 adc debounce sync burst control reg 1.2 ? 2.0 v supply 24 hours duration led blink: once every 5 sec: off twice every 5 sec: on 2 hz: ?? no synch ?? error start timer on/off outputs
acs - revision 2.4 october 2010 ? semtech corp. www.semtech.com /products/ page 2 section page table of content advanced communications & sensing datasheet SX8124 24 hours timer synchr onized on 50/60hz mains e lectrical s pecification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1 absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.1 operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.2 circuit specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 t echnical d escription . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3 pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3.1 digital input levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3.2 pin states . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4 power modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4.1 safe mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4.2 low voltage mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4.3 active mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 5 system architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 6 24h timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 6.1 operating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 6.2 debounce on start pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 7 setting duration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 8 timer synchronization on a 50hz or 60hz external phase. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 8.1 external phase available for synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 8.2 no phase available for synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 9 timer reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 9.1 reset with the start pin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 9.2 reset with the duration pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 10 led output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 10.1 synchronized on phase, outputs on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 10.2 synchronized on phase, outputs off. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 10.3 not synchronized on phase. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 a pplication e xamples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 11 complete application sc hematics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 11.1 led boosters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 11.2 low cost led output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 m echanical s pecification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 12 packages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 12.1 soic-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 12.1.1 outline drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 12.1.2 land pattern. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 12.1.3 marking information 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www.semtech.com /products/ page 3 advanced communications & sensing datasheet SX8124 24 hours timer synchr onized on 50/60hz mains acs - revision 2.4 october 2010 ? semtech corp. electrical specification 1 absolute maximum ratings note the absolute maximum ratings, in table below, are stress ratings only. functional operation of the device at conditions ot her than those indicated in the operating conditions sections of this specification is not implied. exposure to the absolute maximum rati ngs, where different to the operating conditions, for an extended period may reduce the reliability or useful lifetime of the product. table 1. absolute maximum ratings parameter symbol min max unit supply voltage v amrvdd -0.3 2.5 v pin voltage (non-supply pins) v amrvin vss - 0.3 vdd + 0.3 v sink or source current on any pin i amriss -100 100 ma storage temp t stor -50 +150 c esd conditions hbm esd hbm 4000 v cdm esd cdm 1000 v mm esd mm 200 v
www.semtech.com /products/ page 4 advanced communications & sensing datasheet SX8124 24 hours timer synchr onized on 50/60hz mains acs - revision 2.4 october 2010 ? semtech corp. 2specifications 2.1 operating conditions 2.2 circuit specification note circuit operates within the supply voltage range vdd-vss = vddoc. the specification is verified within the fu ll spec voltage range vdd-vss = vddspec. table 2. operating range parameter symbol min max unit supply voltage range v ddoc 0.9 2.0 v full spec voltage range v ddspec 1.0 1.8 v ambient temperature t oc -40 +85 c note conditions: temperature within toc and vdd-vss within vddspec, unless otherwise stated. table 3. circuit electrical specification parameter symbol min typ max unit safe mode low limit v safe 0.6 0.7 v por voltage threshold v por 0.9 v hysteresis v porhyst 150 mv switch on level v on 0.95 1.05 1.15 v switch off level t : 0 to 70c v off 0.85 0.95 1.00 v t : -40 to 85c 0.85 0.95 1.05 v v on vdd on : active or sleep low batt safe low batt safe v off v por mode : time v safe v porhyst
www.semtech.com /products/ page 5 advanced communications & sensing datasheet SX8124 24 hours timer synchr onized on 50/60hz mains acs - revision 2.4 october 2010 ? semtech corp. table 4. circuit power consumption specifications parameter symbol min typ max unit supply current in timer active mode (outputs no loaded... vdd=2.0v i active 30 a vdd=1.2v 19 a supply current in low voltage mode i lv 10 30 a supply current in safe mode i safe 10 a table 5. digital ios specifications parameter symbol min typ max unit startup time at power-on t start 0.1 s output high voltage v oh 3/4 vdd vdd v output low voltage v ol vss 1/4 vdd v max source current at min voh vdd = 0.9 v i oh09 4ma vdd >= 1.2 v i oh12 10 ma max sink current at max vol vdd = 0.9 v i ol09 4ma vdd >= 1.2 v i ol12 10 ma input capacitance c i 10 pf table 6. general specifications parameter symbol min typ max unit time to synchronize on mains frequency tsynch 250 ms minimal time of active button to reset internal counter treset 3 s pull-up resistor on start rpull 30 100 kohm
www.semtech.com /products/ page 6 advanced communications & sensing datasheet SX8124 24 hours timer synchr onized on 50/60hz mains acs - revision 2.4 october 2010 ? semtech corp. technical description 3pinout table 7. soic-8 pinout pin# pin name pin type pin function reset 1 duration analog input analog input to set duty cycle. 1 1. in active mode, input impedance on duration pin is 500k min, 750k typical and 1000k max. high impedance 2 phase digital input input for phase and frequency detection high impedance 3 start digital input optional button to reset counter or switch output pull up 4 led digital output optional led pulses vss 5 nout digital output output, low when active vss 6 vss power ground negative supply and ic ground negative supply 7 out digital input output, high when active vdd 8 vdd power positive positive supply positive supply figure 1. soic-8 pinout duration phase start led vdd out vss nout 18
www.semtech.com /products/ page 7 advanced communications & sensing datasheet SX8124 24 hours timer synchr onized on 50/60hz mains acs - revision 2.4 october 2010 ? semtech corp. 3.1 digital input levels input thresholds levels scale with vdd. inputs have an hysteresis based on a schmitt trigger schematics. 3.2 pin states figure 2. input level scales with vdd table 8. pinout vs power mode pin# pin name pin type pin state safe mode low voltage mode active mode 1 duration analog input high impedance high impedance high impedance 2 phase digital input high impedance high impedance high impedance 3 start digital input high impedance pull up pull up 4 led digital output high impedance vss 43khz burst or vss 5 nout digital output high impedance vss vss or vdd 6 vss power ground negative supply negative supply negative supply 7 out digital input high impedance vdd vss or vdd 8 vdd power positive positive supply positive supply positive supply vdd vih vil 1 0 vdd vil, vih vs vdd 2 1.5 0.5 0.8 1 1.2 1.4 1.6 1.8 2 threshold
www.semtech.com /products/ page 8 advanced communications & sensing datasheet SX8124 24 hours timer synchr onized on 50/60hz mains acs - revision 2.4 october 2010 ? semtech corp. 4power modes 4.1 safe mode the internal system goes in safe mode as soon as the vdd voltage is abov e 0.6-0.7v. in this mode all pins are set in high impedance and are inactive . this guarantees a safe start-up. 4.2 low voltage mode the internal 24h timer and phase detection/synchronization functions are active. all input ( button, phase, duration ) pins functionalities remains active but will not activate the outputs. all outputs are forced to a default static state as follows: out pin is forced high nout pin is forced low led pin is low 4.3 active mode the outputs are active and set according to the device internal states: out and nout pin active (see operating on page 10 ) led pin sending 250ms bursts (see led output on page 15 ) figure 3. operating modes vs vdd voltage ios on vdd ios off timer on / off hysteresis time safe active safe 1.05v 0.95v 0.9v 0.6v 0v safe low voltage low voltage
www.semtech.com /products/ page 9 advanced communications & sensing datasheet SX8124 24 hours timer synchr onized on 50/60hz mains acs - revision 2.4 october 2010 ? semtech corp. 5 system architecture the system is based on its internal timer to track frequency and to disciminate 50 hz vs 60 hz supply. if there is no input on phase pin, the system timing will use the internal oscillator (10% precise). once the system is locked on the ma ins phase, its time precision is gi ven by the mains frequency precision. the period of the output signal on out and nout is 24 hours. the duty cycle on these pins is equal to the relative voltage on pin duration version the voltage on pin vdd. if duration is 1/3 of vdd, out will be high for 8 hours and down for 16 hours. remark that when the out state is manually modified using the start pin, this does not influence the internal counter: the out (and nout) pins will continue to be switched on at the end of the 24 hours cycle and off after the programmed duty cycle. the led outputs is a signal indicating the internal chip status (see 10. led output ). figure 4. SX8124 architecture led 60 hz detect burst gen duration phase start debounce vdd out vss nout 50 hz detect rc oscillator 24h timer adc reset ?0? detect output control set duration reset 3s detect
www.semtech.com /products/ page 10 advanced communications & sensing datasheet SX8124 24 hours timer synchr onized on 50/60hz mains acs - revision 2.4 october 2010 ? semtech corp. 6 24h timer 6.1 operating the pin start is used to change the out (and nout) state. a short pulse (below 1 second) on this pin manually changes the out and nout state ( figure 6 ). a long pulse (around 3 seconds or more) resets the system and restarts the synchronization of the chip on its phase input. 6.2 debounce on start pin the start pin is active low. for a start/stop command detection, the voltage on the start pin must be maintained low during 10ms. then, a delay of 20ms is necessary before the next start/stop command. this allow to remove wrong start/stop commands due to oscillations when using of low-cost push buttons. figure 5. outputs waveforms during the 24 h cycle figure 6. outputs toggling pushing star t pin down during less than 1 second out 24h cycle next 24h cycle nout start timer toggle at set duration (re)start 24h cycle next 24h cycle start out nout pin toggle start timer (re)start pin toggle short low pulse short low pulse
www.semtech.com /products/ page 11 advanced communications & sensing datasheet SX8124 24 hours timer synchr onized on 50/60hz mains acs - revision 2.4 october 2010 ? semtech corp. 7 setting duration the measurement of duration pin voltage is ratiometri c to vdd. the 24h duty cycle on out and nout pins is equal to the relative voltage on pin duration versus the voltage on pin vdd. for example if duration is 1/3 of vdd, out will be high for 8 hours and down for 16 hours. the voltage resolution on the durati on pin is 256, so the out and nout pin can toggle at each step of 24h / 256 = 5.625 minutes. steps 0 to 2 on the duration pin are reserved for detection of a reset command with the pin set to ground. the timer can not be set to toggle out and nout during the 15 first minutes after the start of the 24h cycle. see reset with the duration pin on page 14 . while the duration is set to 0, the led pin is not active and set to vss. figure 7. 256 steps resolution on duration pin figure 8. 256 steps on the 24h timer cycle duration SX8124 vss vdd vdd 256 0 128 vss out 24h cycle next 24h cycle nout start timer toggle at set duration (re)start step 0 step 128 step 256
www.semtech.com /products/ page 12 advanced communications & sensing datasheet SX8124 24 hours timer synchron ized on 50/60hz mains acs - revision 2.4 october 2010 ? semtech corp. 8 timer synchronization on a 50hz or 60hz external phase to avoid timing drifts over the time, the SX8124 ca n be synchronised on a signal from the mains. the SX8124 permanently checks the duration betw een two consecutive ed ges on the phase pin. 8.1 external phase available for synchronization please note that for correct phase detection the edges on the phase pin must be sharp . a sinus or triangular wave is not recommended. 8.2 no phase available for synchronization if there is no clean 50hz or 60hz signal on phase pin, th e system timing switch on the internal rc oscillator. in this case the timer will be 10% precise. the led output is sending 2hz burst to indicate that the timer is not synchronized and counting based on the internal base time. the maximum frequency on phase pin should not exceed 20khz. if the signal on this pin has a frequency potentially higher than 20khz it must be low pass filtered with a capacitor. figure 9. example: timer synchronized on a 50hz phase figure 10. timer not synchron ized on an external phase led 60 hz detect burst gen phase 50 hz detect rc oscillator 24h timer output control if out and nout are on : if out and nout are off : 50 hz signal led 60 hz detect burst gen phase 50 hz detect rc oscillator 24h timer output control no signal or noise
www.semtech.com /products/ page 13 advanced communications & sensing datasheet SX8124 24 hours timer synchron ized on 50/60hz mains acs - revision 2.4 october 2010 ? semtech corp. 9 timer reset 9.1 reset with the start pin a button can be connected between the button pin and vss. holding start down during 3 seconds or more resets the 24 hours timer and the system. pressing shortly the button changes the output state without modifying the internal counter. figure 11. timer reset with the start button figure 12. manual reset holding start pin down during 3 seconds or more start SX8124 vss vdd > 3 seconds start timer (re)start timer start out nout (re)start long pulse 24h cycle long pulse toggle at set duration
www.semtech.com /products/ page 14 advanced communications & sensing datasheet SX8124 24 hours timer synchr onized on 50/60hz mains acs - revision 2.4 october 2010 ? semtech corp. 9.2 reset with the duration pin moving the duration voltage to 0v and then moving it back to the desired duration will reset the 24 hours timer. this can be done either with a switch in parallel with the duration resistive di vider or if this divider is made with a potentiometer by turning this potentiometer to 0 leaving it there for a few seconds and then bring it back to the desired position. the voltage on duration pin remains rati ometric to vdd while vdd is below 1.8v. additionally, if the voltage on duration pi n exceeds |1.8v| the timer is reinitialized. figure 13. timer reset by pushing duration pin to ground figure 14. manual reset moving duration pin voltage down to 0v 0h 24h 12h 18h 6h duration SX8124 vss vdd start reset duration out nout toggle at set duration 24h cycle (re)start
www.semtech.com /products/ page 15 advanced communications & sensing datasheet SX8124 24 hours timer synchr onized on 50/60hz mains acs - revision 2.4 october 2010 ? semtech corp. 10 led output the led output is used to indicate the status of the internal system. the led signal is made of bursts of 4 us pulses with a period of 30 us and total duration of 250 ms. this makes possible to activate a led even at very low voltage. to indicate that out is high, the led sends two bursts separated by 500 ms every 5 seconds. to indicate that out is low, the led send one burst every 5 seconds. to indicate that the system is not synchronized (no phase detected, or frequency measured on phase outside 50-60 hz, at start-up or after a manual rese t), the led continuously sends bursts separated by 250 ms. 10.1 synchronized on phase, outputs on when synchronized, the led indicates the out pin status. the first pulse occurs 5 seconds after a por, timer startup or timer reset, 10.2 synchronized on phase, outputs off the first pulse occurs 5 seconds after a por, timer startup or timer reset, figure 15. dual pulse figure 16. single pulse led 250ms 500ms 250ms 250ms 500ms 250ms 5s out nout led 250ms 250ms 5s 5s out nout
www.semtech.com /products/ page 16 advanced communications & sensing datasheet SX8124 24 hours timer synchr onized on 50/60hz mains acs - revision 2.4 october 2010 ? semtech corp. 10.3 not synchronized on phase figure 17. continuous pulses led out nout 250ms 250ms
www.semtech.com /products/ page 17 advanced communications & sensing datasheet SX8124 24 hours timer synchr onized on 50/60hz mains acs - revision 2.4 october 2010 ? semtech corp. application examples 11 complete application schematics the circuit can be directly powered from the mains through a diode bridge and a resistor as long as the supply voltage is limited at ~1.2v by diodes or similar devices. the choice of the resistor that limits the supply current must be made so that it delivers enough current for the system to supply the ic and any other device that is connected to that supply, but the resistor must be large enough to limit the current in sleep mode (120 kohm will limit power dissipation below 0.3w on a 220v network). the rc filter on the power supply is ther e to reject 100 hz or 120 hz variations. the phase detector is used to increase the precision on the 24 hours counter. it is recommended to protect the pin with external diodes. the filter on the phase de tector is there to reject high frequency perturbations (several khz) but must let the 50 hz or 60 hz go through with limited attenuation. the timer element is a potentiometer. the total resitivi ty of the potentiometer must be low enough to avoid sensitivity to the duration pin impe dance (> 500 kohm) and high enough to limit current drift current. the voltage applied on the potentiometer is 1/100 of the volt age applied on the resistor that protects the supply voltage of the chip, therefore the current through these resistors will be in the same ratio if they have the same value. the power element (either a resistove heater for a diff user or a motor for a ventilator) will be controlled through an npn transistor. figure 18. application schematics with low-power sleep mode (below 0.3 w) 200 v supply 15 kohm 11 w heater 1.5 ? 2.0 v supply 25 ma 91 kohm 200v 3.9 mohm 51 kohm 50 kohm 150 uf 27 nf 1.2 v 1.5 ma 1 kohm 500 ua mspa44 w < 300 mw ic < 300 ma b = 50 vc < 300 v vb < 6v 50 ua phase duration vss vdd out nout led start SX8124 adc debounce sync burst gen control 91 kohm 200v 0ohms
www.semtech.com /products/ page 18 advanced communications & sensing datasheet SX8124 24 hours timer synchr onized on 50/60hz mains acs - revision 2.4 october 2010 ? semtech corp. 11.1 led boosters the chip sends bursts to trigger the le d. if the led is supplied by the regulated voltage vdd it is expected to be connected to a transistor and in parallel with a coil to get enough voltage to light. figure 19. booster for red led figure 20. booster for white/blue led SX8124 0.9 ? 2.0 v led vss vdd led coil SX8124 0.9 ? 2.0 v led vss vdd led coil
www.semtech.com /products/ page 19 advanced communications & sensing datasheet SX8124 24 hours timer synchr onized on 50/60hz mains acs - revision 2.4 october 2010 ? semtech corp. 11.2 low cost led output the schematic on figure 21 below shows a led driving without the us age of a coil to drive the led, and also reduce the costs of the bom. the rlim, rb resistor s and the transistor hfe must be carefully choosed according to the led and mains voltage. figure 21. led supplied by the mains SX8124 0.9 ? 2.0 v led vss vdd led 100v or 200v mains rlim rb
www.semtech.com /products/ page 20 advanced communications & sensing datasheet SX8124 24 hours timer synchr onized on 50/60hz mains acs - revision 2.4 october 2010 ? semtech corp. mechanical specification 12 packages 12.1 soic-8 12.1.1 outline drawing see detail detail a a .050 bsc .236 bsc 8 .010 .150 .189 .154 .193 .012 - 8 0.25 1.27 bsc 6.00 bsc 3.90 4.90 - .157 .197 3.80 4.80 .020 0.31 4.00 5.00 0.51 bxn 2x n/2 tips seating aaa c e/2 2x 12 n a d a1 e1 bbb c a-b d ccc c e/2 a2 (.041) .004 .008 - .028 - - - - 0 .016 .007 .049 .004 .053 8 0 0.20 0.10 - 8 0.40 0.17 1.25 0.10 .041 .010 .069 .065 .010 1.35 (1.04) 0.72 - 1.04 0.25 - - - 1.75 1.65 0.25 0.25 - .010 .020 0.50 - c l (l1) 01 0.25 gage plane h h 3. dimensions "e1" and "d" do not include mold flash, protrusions or gate burrs. -b- controlling dimensions are in millimeters (angles in degrees). datums and to be determined at datum plane notes: 1. 2. -a- -h- side view a b c d e h plane reference jedec std ms-012, variation aa. 4. l1 n 01 bbb aaa ccc a b a2 a1 d e e1 l h e c dim min millimeters nom dimensions inches min max max nom e
www.semtech.com /products/ page 21 advanced communications & sensing datasheet SX8124 24 hours timer synchr onized on 50/60hz mains acs - revision 2.4 october 2010 ? semtech corp. 12.1.2 land pattern this land pattern is for reference purposes only. consult your manufact uring group to ensure your companys manufacturing guidelines are met. (.205) (5.20) z g y p (c) 3.00 .118 1.27 .050 0.60 .024 2.20 .087 7.40 .291 x inches dimensions z p y x dim c g millimeters this land pattern is for reference purposes only. consult your manufacturing group to ensure your company's manufacturing guidelines are met. notes: 1. reference ipc-sm-782a, rlp no. 300a. 2.
www.semtech.com /products/ page 22 advanced communications & sensing datasheet SX8124 24 hours timer synchr onized on 50/60hz mains acs - revision 2.4 october 2010 ? semtech corp. 12.1.3 marking information
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acs - revision 2.4 october 2010 ? semtech corp. www.semtech.com /products/ page 23 iso9001 certified semtech corporation advanced communications & sensing products contact information e-mail: sales@semtech.com or acsupport@semtech.com internet: http://www.semtech.com usa 200 flynn road, camarillo, ca 93012-8790. tel: +1 805 498 2111 fax: +1 805 498 3804 far east 12f, no. 89 sec. 5, nanking e. road, taipei, 105, twn, r.o.c. tel: +886 2 2748 3380 fax: +886 2 2748 3390 europe semtech ltd., units 2 & 3, park court, premier way, abbey park industrial estate, romsey, hampshire, so51 9dn. tel: +44 (0)1794 527 600 fax: +44 (0)1794 527 601 ? semtech 2010 all rights reserved. reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. the information presented in this document does not fo rm part of any quotation or contract, is believed to be accurate and reliable and may be chan ged without notice. no liability will be accepted by the publisher for any consequence of its use. publication thereof does not convey nor imply any license under patent or other industrial or intellectual property rights. semtech assumes no responsibili ty or liability whatsoever for any failure or unexpected operation resulting from misuse, neglect improper installation, repair or improper handling or unusual physical or electrical stress including, but not limited to, exposure to parameters beyond the specified maximum ratings or operation outside the specified range. semtech products are not designed, intended, authorized or warranted to be suitable for use in life- support applications, devices or systems or othe r critical applications. inclusion of semtech products in such applications is understood to be undertaken solely at the customers own risk. should a customer purchase or use semtech products for any such unauthorized application, the customer shall indemnify and hold semtech and its officers, employees, subsidiaries, affili ates, and distributors harmless against all claims, costs damages and atto rney fees which could arise. notice: all referenced brands, product names, service na mes and trademarks are the property of their respective owners. advanced communications & sensing datasheet SX8124 24 hours timer synchr onized on 50/60hz mains

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