PPG33F
3-BIT PROGRAMMABLE
PULSE GENERATOR
(SERIES PPG33F)
3
delay
devices, inc.
FEATURES
PACKAGES
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•
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•
•
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Digitally programmable in 7 steps
Monotonic pulse-width-vs-address variation
Rising edge triggered
16
15
14
13
12
11
10
9
VCC
OUT/
N/C
N/C
A0
A1
A2
N/C
TRIG
1
2
3
4
5
6
7
8
TRIG
OUT
N/C
N/C
N/C
14
13
12
11
10
9
VCC
1
2
3
4
5
6
7
N/C
OUT
N/C
N/C
N/C
OUT/
N/C
N/C
A0
A1
A2
Two separate outputs: inverting & non-inverting
Precise and stable pulse width
Input & outputs fully TTL interfaced & buffered
10 T2L fan-out capability
RES
GND
RES
GND
8
Fits standard 14-pin DIP socket
Auto-insertable
DIP
Gull-Wing
PPG33F-xx Commercial
PPG33F-xxM Military
PPG33F-xxC3 Commercial
PPG33F-xxMC3 Military
FUNCTIONAL DESCRIPTION
PIN DESCRIPTIONS
The PPG33F-series device is a 3-bit digitally programmable pulse
generator. The width, PWA, depends on the address code (A2-A0)
according to the following formula:
TRIG Trigger Input
OUT Non-inverted Output
OUT/ Inverted Output
A0-A2 Address Bits
PWA = PW0 + TINC * A
RES
Reset
VCC +5 Volts
GND 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 50ns,
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
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Programmed pulse width tolerance: 5% or 1ns,
Part
Incremental Width
Per Step (ns)
0.5 ± 0.3
1 ± 0.4
Total Width
Change (ns)
3.50 ± 1.00
7.00 ± 1.00
14.0 ± 1.00
21.0 ± 1.05
28.0 ± 1.40
35.0 ± 1.75
42.0 ± 2.10
56.0 ± 2.80
70.0 ± 3.50
140 ± 7.00
210 ± 10.5
280 ± 14.0
350 ± 17.5
whichever is greater
Number
PPG33F-.5
PPG33F-1
PPG33F-2
PPG33F-3
PPG33F-4
PPG33F-5
PPG33F-6
PPG33F-8
PPG33F-10
PPG33F-20
PPG33F-30
PPG33F-40
PPG33F-50
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Inherent width (PW0): 9ns typical
Inherent delay (TTO): 3.5ns ± 2ns
Operating temperature: 0° to 70° C
Supply voltage VCC: 5VDC ± 5%
2 ± 0.4
3 ± 0.5
4 ± 0.5
Supply current:
ICC = 41ma typical
5 ± 0.6
6 ± 0.7
8 ± 0.8
10 ± 1.0
20 ± 1.5
30 ± 1.8
40 ± 2.0
50 ± 2.5
1997 Data Delay Devices
NOTE: Any dash number between .5 and 50 not
shown is also available.
Doc #97010
1/15/97
DATA DELAY DEVICES, INC.
3 Mt. Prospect Ave. Clifton, NJ 07013
1