PPG38F data 3 delay devices, inc. 8-BIT PROGRAMMABLE PULSE GENERATOR (SERIES PPG38F) FEATURES • • • • • • • • • PACKAGES Digitally programmable in 256 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 10 T2L fan-out capability Fits standard 40-pin DIP socket Auto-insertable TRIG 1 40 VCC N/C 2 39 OUT/ OUT 3 38 N/C GND 4 37 N/C N/C 5 36 VCC N/C 6 35 A0 RES 7 34 A1 GND 8 33 A2 N/C 9 32 VCC N/C 10 31 A3 N/C 11 30 A4 GND 12 29 A5 N/C 13 28 VCC N/C 14 27 N/C N/C 15 26 N/C GND 16 25 VCC A7 17 24 N/C N/C 18 23 A6 N/C 19 22 N/C GND 20 21 N/C PPG38F-xx DIP PPG38F-xxC5 Gull-Wing PPG38F-xxM Military DIP PPG38F-xxMC5 Military Gull-Wing FUNCTIONAL DESCRIPTION PIN DESCRIPTIONS The PPG38F-series device is a 8-bit digitally programmable pulse generator. The width, PWA, depends on the address code (A7-A0) according to the following formula: TRIG OUT OUT/ A0-A7 RES VCC GND PWA = PW0 + TINC * A 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 PW0 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 400ns, 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 DASH NUMBER SPECIFICATIONS • Part Number PPG38F-.5 PPG38F-1 PPG38F-2 PPG38F-5 PPG38F-10 PPG38F-20 PPG38F-50 PPG38F-100 PPG38F-200 PPG38F-400 • • • • • Programmed pulse width tolerance: 5% or 2ns, whichever is greater Inherent width (PW0): 20ns typical Inherent delay (TTO): 10ns ± 2ns Operating temperature: 0° to 70° C Supply voltage VCC: 5VDC ± 5% Supply current: ICC = 80ma typical Incremental Width Per Step (ns) .5 ± .3 1 ± .5 2 ± .5 5 ± 1.5 10 ± 2.0 20 ± 2.0 50 ± 2.5 100 ± 5.0 200 ± 10.0 400 ± 20.0 Total Width Change (ns) 127.5 ± 6.4 255 ± 12.8 510 ± 25.5 1,275 ± 63.8 2,550 ± 127.5 5,100 ± 255.0 12,750 ± 637.5 25,500 ± 1275 51,000 ± 2550 102,000 ± 5100 NOTE: Any dash number between .5 and 400 not shown is also available. 1997 Data Delay Devices Doc #97007 1/15/97 Powered by ICminer.com Electronic-Library Service CopyRight 2003 DATA DELAY DEVICES, INC. 3 Mt. Prospect Ave. Clifton, NJ 07013 1 PPG38F APPLICATION NOTES DEVICE TIMING POWER SUPPLY BYPASSING The timing definitions and restrictions for the PPG38F 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. The PPG38F 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. At power-up, the state of the PPG38F is unknown. Consequently, after power is applied, the unit may not respond to input triggers for a time equal to the maximum pulse width, PWT. After this time, the unit will function properly. If your application requires that the device function immediately, issue a quick reset at power-up. `A7-A0 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. Ai Ai+1 TRW TOAX TATS RES TRTS TTW TRIG TTO TRO TOTR OUT TSKEW PWA OUT/ Figure 1: Timing Diagram Doc #97007 Powered 1/15/97 by ICminer.com DATA DELAY DEVICES, INC. Tel: 201-773-2299 Fax: 201-773-9672 Electronic-Library Service CopyRight 2003 http://www.datadelay.com 2 PPG38F 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 SYMBOL PWT PW0 TTO TRO TSKEW TTW TRW TRTS TATS TOAX TOTR MIN TYP 255 20.0 10.0 15.0 8.0 MAX UNITS TINC ns ns ns ns ns ns ns ns ns ns 27.0 12.0 17.0 1.5 5.0 10.0 9.0 6.0 0.0 10.0 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 SYMBOL VOH Low Level Output Voltage VOL 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 IOH IOL VIH VIL VIK IIHH Doc #97007 1/15/97 Powered by ICminer.com Electronic-Library Service CopyRight 2003 IIH IIL IOS MIN 2.5 TYP 3.4 MAX UNITS V 0.35 0.5 V -1.0 20.0 0.8 -1.2 0.1 mA mA V V V mA 20 -0.6 -150 25 12.5 µA mA mA Unit Load 2.0 -60 DATA DELAY DEVICES, INC. 3 Mt. Prospect Ave. Clifton, NJ 07013 NOTES VCC = MIN, IOH = MAX VIH = MIN, VIL = MAX VCC = MIN, IOL = MAX VIH = MIN, VIL = MAX VCC = MIN, II = IIK VCC = MAX, VI = 7.0V VCC = MAX, VI = 2.7V VCC = MAX, VI = 0.5V VCC = MAX 3 PPG38F PACKAGE DIMENSIONS 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 .650 MAX. .580 MAX. .010 ±.002 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 2.100 MAX. .280 MAX. Lead Material: Nickel-Iron alloy 42 TIN PLATE .015 TYP. .018 TYP. .070 MAX. .100 TYP. DIP (PPG38F-xx, PPG38F-xxM) .020 TYP. .040 TYP. .010±.002 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 .882 ±.005 .710 .590 ±.005 MAX. 1 2 3 4 5 6 7 8 9 .007 ±.005 10 11 12 13 14 15 16 17 18 19 20 .090 .100 1.100 2.080±.020 .280 MAX. .050 ±.010 Gull-Wing (PPG38F-xxC5, PPG38F-xxMC5) Doc #97007 Powered 1/15/97 by ICminer.com DATA DELAY DEVICES, INC. Tel: 201-773-2299 Fax: 201-773-9672 Electronic-Library Service CopyRight 2003 http://www.datadelay.com 4 PPG38F DELAY LINE AUTOMATED TESTING TEST CONDITIONS INPUT: Ambient Temperature: 25oC ± 3oC Supply Voltage (Vcc): 5.0V ± 0.1V Input Pulse: High = 3.0V ± 0.1V Low = 0.0V ± 0.1V Source Impedance: 50Ω 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. PRINTER COMPUTER SYSTEM REF PULSE GENERATOR OUT IN DEVICE UNDER TEST (DUT) TRIG OUT IN TRIG TIME INTERVAL COUNTER Test Setup PERIN PWIN TRISE INPUT SIGNAL TFALL VIH 2.4V 1.5V 0.6V 2.4V 1.5V 0.6V TTO OUTPUT SIGNAL VIL PWA VOH 1.5V 1.5V VOL Timing Diagram For Testing Doc #97007 1/15/97 Powered by ICminer.com Electronic-Library Service CopyRight 2003 DATA DELAY DEVICES, INC. 3 Mt. Prospect Ave. Clifton, NJ 07013 5