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| LOW POWER HEX TTL-to-ECL TRANSLATOR FEATURES s s s s s s s s s s Max. propagation delay of 1.4ns IEE min. of -70mA Industry standard 100K ECL levels Extended supply voltage option: VEE = -4.2V to -5.5V Differential outputs Voltage and temperature compensation for improved noise immunity Internal 75K input pull-down resistors Twice as fast as Fairchild's 324 Function and pinout compatible with Fairchild F100K Available in 24-pin CERPACK and 28-pin PLCC packages SY100S324 DESCRIPTION The SY100S324 is a hex translator designed to convert TTL logic levels to 100K ECL levels. The inputs are TTL compatible with differential outputs that can either be used as an inverting/non-inverting translator or as differential line drivers. A common Enable (E), when LOW, holds all inverting outputs HIGH and holds all noninverting outputs LOW. When used in the differential mode, due to its high common mode rejection, it overcomes voltage gradients between the TTL and ECL ground systems. The VEE and VTTL power may be applied in either order. PIN CONFIGURATIONS Q0 VEES Q0 D2 D1 Q1 Q1 Q2 Q2 VCC VCC VCCA VCCA Q3 25 24 23 22 21 20 19 26 27 28 1 2 3 4 5 6 7 8 9 10 11 18 17 16 BLOCK DIAGRAM E D0 D1 D2 D3 D4 D5 Q0 Q0 Q1 Q1 Q2 Q2 Q3 Q3 Q4 Q4 Q5 Q5 Top View PLCC J28-1 15 14 13 12 D0 VTTL E VEES VEE D3 D4 VTTL VEE D0 VEES Q5 Q5 D5 Q3 Q4 Q4 24 23 22 21 D1 D2 Q0 Q0 Q1 Q1 D3 E 20 19 18 17 D4 1 2 3 4 5 6 7 8 9 10 11 12 D5 Q5 Q5 Q4 Q4 Q3 Top View Flatpack F24-1 16 15 14 13 VCC Q2 Q2 VCCA PIN NAMES Pin D0-D5 E Q0-Q5 Q0-Q5 VEES VTTL VCCA Data Inputs Enable Inputs Data Outputs Complementary Data Outputs VEE Substrate TTL VCC Power Supply VCCO for ECL Outputs Rev.: F Amendment: /0 Function 1 Issue Date: July, 1999 VCCA Q3 Micrel SY100S324 DC ELECTRICAL CHARACTERISTICS VEE = -4.2V to -5.5V unless otherwise specified, VCC = VCCA = GND, VTTL = +4.5V to +5.5V Symbol VOH VOL VOHC VOLC VIH VIL VCD IIH Parameter Output HIGH Voltage Output LOW Voltage Output HIGH Voltage Output LOW Voltage Input HIGH Voltage Input LOW Voltage Input Clamp Diode Voltage Input HIGH Current Data Enable Input HIGH Current Breakdown Test, All Inputs Input LOW Current Data Enable VEE Power Supply Current VTTL Power Supply Current Min. -1025 -1810 -1035 -- 2.0 0 -- -- -- -- Sim. -986 -1674 -- -- -- -- -- -- -- -- Max. -880 -1620 -- -1610 5.0 0.8 -1.5 20 120 1.0 Unit mV mV mV mV V V V A mA VIN = VIH (Max.) VIN = VIL (Min.) VIN = VIH (Min.) VIN = VIL (Max.) Guaranteed HIGH Signal for All Inputs Guaranteed LOW Signal for All Inputs IIN = -10mA VIN = +2.4V All Other Inputs VIN = GND VIN = +5.5V, VTTL = Max., All Other Inputs VIN = GND VIN = +0.4V All Other Inputs VIN = VIH All Inputs VIN = +4.0V All Inputs VIN = GND Loading with 50 to -2V Condition Loading with 50 IIH IIL -1.2 -6.7 -70 -- -- -- -45 25 -- -- -28 35 mA mA mA IEE ITTL AC ELECTRICAL CHARACTERISTICS PLCC /FLATPACK VEE = -4.2V to -5.5V unless otherwise specified, VCC = VCCA = GND, VTTL = +4.5V to +5.5V Symbol tPLH tPHL tTLH tTHL Parameter Propagation Delay Data and Enable to Output Transition Time 20% to 80%, 80% to 20% Min. 400 350 Typ. 850 -- Max. 1400 1700 Unit ps ps Condition See Switching Wave Form Figures 2 Micrel SY100S324 SWITCHING WAVEFORM 2.5 0.3 ns 80% 50% 20% 0V tPHL tPLH 2.5 0.3 ns +3.0V INPUT +1.5V COMPLEMENT 50% tPLH 80% TRUE tTLH tPHL 50% 20% tTHL Figure 1. Propagation Delay and Transition Times NOTE: VEE = -4.2V to -5.5V unless otherwise specified, VCC = VCCA = GND, VTTL = +4.5V to +5.5V TEST CIRCUIT VIH VTTL 0.1F 0.1F 0.1F L1 SCOPE CHAN A RT L2 SCOPE CHAN B RT L3 PULSE GENERATOR 0.1F 2.5F VEE VCC Figure 2. AC Test Circuit NOTES: VCC, VCCA = +2V, VEE = -2.5V, VTTL = +7.0V, VIH = +6.0V L1, L2 and L3 = equal length 50 impedance lines RT = 50 terminator internal to scope Decoupling 0.1F from GND to VCC, VEE and VTTL All unused outputs are loaded with 50 to GND CL = Fixture and stray capacitance 3pF PRODUCT ORDERING CODE Ordering Code SY100S324FC SY100S324JC SY100S324JCTR Package Type F24-1 J28-1 J28-1 Operating Range Commercial Commercial Commercial 3 Micrel SY100S324 24 LEAD CERPACK (F24-1) Rev. 03 4 Micrel SY100S324 28 LEAD PLCC (J28-1) Rev. 03 MICREL-SYNERGY TEL 3250 SCOTT BOULEVARD SANTA CLARA CA 95054 USA FAX + 1 (408) 980-9191 + 1 (408) 914-7878 WEB http://www.micrel.com This information is believed to be accurate and reliable, however no responsibility is assumed by Micrel for its use nor for any infringement of patents or other rights of third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent right of Micrel Inc. (c) 2000 Micrel Incorporated 5 |
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