PPG312F Datasheet, PDF (1/5 Pages) Data Delay Devices, Inc. – 12-BIT PROGRAMMABLE PULSE GENERATOR(SERIES PPG312F)

12-BIT PROGRAMMABLE
PULSE GENERATOR
(SERIES PPG312F)
PPG312F
data
delay
3
®
devices, inc.
FEATURES
• Digitally programmable in 4096 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
N/C 2
N/C 3
N/C 4
N/C 5
N/C 6
N/C 7
GND 8
N/C 9
N/C 10
GND 11
A3 12
A5 13
A6 14
A7 15
GND 16
A8 17
A9 18
A10 19
A11 20
PACKAGES
40 VCC
39 N/C
38 OUT
37 OUT/
36 N/C
35 RES
34 N/C
33 N/C
32 VCC
31 A0
30 A1
29 A2
28 N/C
27 N/C
26 N/C
25 N/C
24 N/C
23 A4
22 N/C
21 VCC
PPG312F-xx
DIP
PPG312F-xxC5
Gull-Wing
PPG312F-xxM
Military DIP
PPG312F-xxMC5
Military Gull-Wing
FUNCTIONAL DESCRIPTION
PIN DESCRIPTIONS
The PPG312F-series device is a 12-bit digitally programmable pulse
generator. The width, PW_A, depends on the address code (A11-A0)
according to the following formula:
TRIG Trigger Input
OUT Non-inverted Output
OUT/ Inverted Output
A0-A11 Address Bits
PW_A = PW₀ + T_INC * A
RES Reset
VCC +5 Volts
where A is the address code, T_INC is the incremental pulse width of the
GND Ground
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
• Programmed pulse width tolerance: 5% or 2ns,
whichever is greater
• Inherent width (PW₀): 20ns typical
• Inherent delay (T_TO): 10ns ± 2ns
• Operating temperature: 0° to 70° C
• Supply voltage V_CC: 5VDC ± 5%
• Supply current: I_CC = 200ma typical
DASH NUMBER SPECIFICATIONS
Part
Number
PPG312F-.5
PPG312F-1
PPG312F-2
PPG312F-5
PPG312F-10
PPG312F-20
PPG312F-50
PPG312F-100
PPG312F-200
PPG312F-400
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 (us)
2.048 ± 0.10
4.096 ± 0.20
8.192 ± 0.41
20.48 ± 1.02
40.96 ± 2.05
81.92 ± 4.10
204.8 ± 10.2
409.6 ± 20.5
819.2 ± 41.0
1,638.4 ± 81.9
NOTE: Any dash number between .5 and 400 not
shown is also available.
©1997 Data Delay Devices
Doc #97008
DATA DELAY DEVICES, INC.
1
1/15/97
3 Mt. Prospect Ave. Clifton, NJ 07013