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PPG36F
6-BIT PROGRAMMABLE PULSE GENERATOR (SERIES PPG36F)
FEATURES
* * * * * * * * * Digitally programmable in 64 steps Monotonic pulse-width-vs-address variation Rising edge triggered Two separate outputs: inverting & non-inverting Precise and stable pulse width Input & outputs fully TTL interfaced & buffered 2 10 T L fan-out capability Fits standard 24-pin DIP socket Auto-insertable
TRIG N/C OUT N/C N/C N/C RES N/C N/C N/C N/C GND 1 2 3 4 5 6 7 8 9 10 11 12
data 3 (R) delay devices, inc.
PACKAGES
24 23 22 21 20 19 18 17 16 15 14 13 VCC OUT/ N/C N/C N/C A0 A1 A2 N/C A3 A4 A5
PPG36F-xx DIP PPG36F-xxC4 Gull-Wing
PPG36F-xxM Military DIP PPG36F-xxMC4 Military Gull-Wing
FUNCTIONAL DESCRIPTION
The PPG36F-series device is a 6-bit digitally programmable pulse generator. The width, PW A, depends on the address code (A5-A0) according to the following formula: PWA = PW 0 + TINC * A
PIN DESCRIPTIONS
TRIG OUT OUT/ A0-A5 RES VCC GND Trigger Input Non-inverted Output Inverted Output Address Bits Reset +5 Volts Ground
where A is the address code, TINC is the incremental pulse width of the device, and PW 0 is the inherent pulse width of the device. The incremental width is specified by the dash number of the device and can range from 0.5ns through 10ns, inclusively. RESET is held LOW during normal operation. When it is brought HIGH, OUT and OUT/ are forced into LOW and HIGH states, respectively, and the unit is ready for the next trigger input. The address is not latched and must remain asserted while the output pulse is active.
SERIES SPECIFICATIONS
* * * * * * Programmed pulse width tolerance: 5% or 2ns, whichever is greater Inherent width (PW0): 12ns typical Inherent delay (TTO): 3.5ns 2ns Operating temperature: 0 to 70 C Supply voltage VCC: 5VDC 5% Supply current: ICC = 60ma typical
DASH NUMBER SPECIFICATIONS
Part Number PPG36F-.5 PPG36F-1 PPG36F-2 PPG36F-3 PPG36F-4 PPG36F-5 PPG36F-6 PPG36F-7 PPG36F-8 PPG36F-9 PPG36F-10 Incremental Width Per Step (ns) 0.5 0.3 1 0.5 2 0.5 3 1.0 4 1.0 5 1.5 6 1.5 7 1.5 8 2.0 9 2.0 10 2.0 Total Width Change (ns) 31.5 2.00 63.0 3.15 126.0 6.30 189.0 9.45 252.0 12.6 315.0 15.8 378.0 18.9 441.0 22.1 504.0 25.2 567.0 28.4 630.0 31.5
(c) 1997 Data Delay Devices
NOTE: Any dash number between .5 and 10 not shown is also available.
Doc #97009
1/15/97
DATA DELAY DEVICES, INC.
3 Mt. Prospect Ave. Clifton, NJ 07013
1
PPG36F
APPLICATION NOTES
DEVICE TIMING
The timing definitions and restrictions for the PPG36F are shown in Figure 1. The unit is activated by a rising edge on the TRIG input. After a time, TTO (called the inherent delay), the rising edge of the pulse appears at OUT. The duration of the pulse is given by the above equation. For the duration of the pulse, the device ignores subsequent triggers. Once the falling edge of the pulse has appeared at OUT, an additional time, TOTR, is required before the device can respond to the next trigger. At power-up, the state of the PPG36F is unknown. Consequently, after power is applied, the unit may not respond to input triggers for a time equal to the maximum pulse width, PW T. After this time, the unit will function properly. If your application requires that the device function immediately, issue a quick reset at power-up.
POWER SUPPLY BYPASSING
The PPG36F relies on a stable power supply to produce repeatable pulses within the stated tolerances. A 0.1uf capacitor from VCC to GND, located as close as possible to each VCC pin, is recommended. A wide VCC trace should connect all VCC pins externally, and a clean ground plane should be used.
INCREMENT TOLERANCES
Please note that the increment tolerances listed represent a design goal. Although most increments will fall within tolerance, they are not guaranteed throughout the address range of the unit. Monotonicity is, however, guaranteed over all addresses.
A5-A0
Ai TRW TOAX TATS
Ai+1
RES TRTS TRIG TTO OUT TSKEW OUT/ Figure 1: Timing Diagram TRO TOTR PWA TTW
Doc #97009
1/15/97
DATA DELAY DEVICES, INC.
Tel: 973-773-2299 Fax: 973-773-9672 http://www.datadelay.com
2
PPG36F
DEVICE SPECIFICATIONS
TABLE 1: AC CHARACTERISTICS
PARAMETER Total Programmable Pulse Width Inherent Pulse Width Trigger to Output Delay Reset to Output Delay Output Skew Trigger Pulse Width Reset Pulse Width Reset to Trigger Setup Time Address to Trigger Setup Time Output Low to Address Change Output to Trigger Recovery Time *or 10ns, whichever is greater SYMBOL PWT PW0 TTO TRO TSKEW TTW TRW TRTS TATS TOAX TOTR MIN 8.0 1.5 TYP 63 12.0 3.5 1.5 5.0 10.0 9.0 6.0 0.0 15 MAX 16.0 5.5 17.0 UNITS TINC ns ns ns ns ns ns ns ns ns % of PW T
TABLE 2: ABSOLUTE MAXIMUM RATINGS
PARAMETER DC Supply Voltage Input Pin Voltage Storage Temperature Lead Temperature SYMBOL VCC VIN TSTRG TLEAD MIN -0.3 -0.3 -55 MAX 7.0 VDD+0.3 150 300 UNITS V V C C NOTES
10 sec
TABLE 3: DC ELECTRICAL CHARACTERISTICS
(0C to 70C, 4.75V to 5.25V) PARAMETER High Level Output Voltage Low Level Output Voltage High Level Output Current Low Level Output Current High Level Input Voltage Low Level Input Voltage Input Clamp Voltage Input Current at Maximum Input Voltage High Level Input Current Low Level Input Current Short-circuit Output Current Output High Fan-out Output Low Fan-out SYMBOL VOH VOL IOH IOL VIH VIL VIK IIHH IIH IIL IOS MIN 2.5 TYP 3.4 0.35 MAX UNITS V V mA mA V V V mA A mA mA Unit Load NOTES VCC = MIN, IOH = MAX VIH = MIN, VIL = MAX VCC = MIN, IOL = MAX VIH = MIN, VIL = MAX
0.5 -1.0 20.0
2.0 0.8 -1.2 0.1 20 -0.6 -150 25 12.5
VCC = MIN, II = IIK VCC = MAX, VI = 7.0V VCC = MAX, VI = 2.7V VCC = MAX, VI = 0.5V VCC = MAX
-60
Doc #97009
1/15/97
DATA DELAY DEVICES, INC.
3 Mt. Prospect Ave. Clifton, NJ 07013
3
PPG36F
PACKAGE DIMENSIONS
24 23 22 21 20 19 18 17 16 15 14 13
.580 MAX. .010 .002
1 2 3 4 5 6 7 8 9 10 11 12
.600 .005
1.270.010 Lead Material: Nickel-Iron alloy 42 TIN PLATE
.380 MAX.
.015 TYP. .018 TYP. 1.100.010 11 Equal spaces each .100.010 Non-Accumulative .070 MAX.
DIP (PPG36F-xx, PPG36F-xxM)
.020 TYP.
.040 TYP.
.010.002
24 23 22 21 20 19 18 17 16 15 14 13
.710 .590 .005 MAX.
.882 .005 .007 .005
1
2
3
4
5
6
7
8
9
10 11 12
.090 1.100 1.280.020
.100
.280 MAX.
.050 .010
Gull-Wing (PPG36F-xxC4, PPG36F-xxMC4)
Doc #97009
1/15/97
DATA DELAY DEVICES, INC.
Tel: 973-773-2299 Fax: 973-773-9672 http://www.datadelay.com
4
PPG36F
DELAY LINE AUTOMATED TESTING
TEST CONDITIONS
INPUT: o o Ambient Temperature: 25 C 3 C Supply Voltage (Vcc): 5.0V 0.1V Input Pulse: High = 3.0V 0.1V Low = 0.0V 0.1V Source Impedance: 50 Max. Rise/Fall Time: 3.0 ns Max. (measured between 0.6V and 2.4V ) Pulse Width: PWIN = 10ns Period: PERIN = 2 x Max. Pulse Width OUTPUT: Load: Cload: Threshold: 1 FAST-TTL Gate 5pf 10% 1.5V (Rising & Falling)
NOTE: The above conditions are for test only and do not in any way restrict the operation of the device.
COMPUTER SYSTEM
PRINTER
REF PULSE GENERATOR OUT TRIG IN DEVICE UNDER TEST (DUT) OUT IN TRIG TIME INTERVAL COUNTER
Test Setup
PERIN PWIN TRISE INPUT SIGNAL
2.4V 1.5V 0.6V
TFALL VIH
2.4V 1.5V 0.6V
VIL
TTO OUTPUT SIGNAL
1.5V
PWA VOH
1.5V
VOL
Timing Diagram For Testing
Doc #97009
1/15/97
DATA DELAY DEVICES, INC.
3 Mt. Prospect Ave. Clifton, NJ 07013
5

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