PDU18F Datasheet, PDF (1/5 Pages) Data Delay Devices, Inc. – 8-BIT PROGRAMMABLE DELAY LINE

8-BIT PROGRAMMABLE
DELAY LINE
(SERIES PDU18F)
PDU18F
ddaeltaay ₃ ^
devices, inc.
FEATURES
• Digitally programmable in 256 delay steps
• Monotonic delay-versus-address variation
• Two separate outputs: inverting & non-inverting
• Precise and stable delays
• Input & outputs fully TTL interfaced & buffered
• 10 T²L fan-out capability
• Fits standard 40-pin DIP socket
• Auto-insertable
N/C 1
OUT/ 2
OUT 3
EN/ 4
GND 5
N/C 6
N/C 7
N/C 8
GND 9
N/C 10
N/C 11
N/C 12
N/C 13
GND 14
N/C 15
EN/ 16
A7 17
IN 18
N/C 19
GND 20
PACKAGES
40 VCC
39 N/C
38 A0
37 A1
36 A2
35 VCC
34 N/C
33 A3
32 A4
31 A5
30 VCC
29 N/C
28 N/C
27 N/C
26 N/C
25 VCC
24 N/C
23 A6
22 N/C
21 N/C
PDU18F-xx
DIP
PDU18F-xxC5
Gull-Wing
PDU18F-xxM
Military DIP
PDU18F-xxMC5
Military Gull-Wing
FUNCTIONAL DESCRIPTION
PIN DESCRIPTIONS
The PDU18F-series device is a 8-bit digitally programmable delay line.
IN Delay Line Input
The delay, TD_A, from the input pin (IN) to the output pins (OUT, OUT/)
OUT Non-inverted Output
depends on the address code (A7-A0) according to the following formula:
OUT/ Inverted Output
A0-A7 Address Bits
TD_A = TD₀ + T_INC * A
EN/ Output Enable
VCC +5 Volts
where A is the address code, T_INC is the incremental delay of the device,
GND Ground
and TD₀ is the inherent delay of the device. The incremental delay is
specified by the dash number of the device and can range from 0.5ns through 10ns, inclusively. The
enable pins (EN/) are held LOW during normal operation. These pins must always be in the same state
and may be tied together externally. When these signals are brought HIGH, OUT and OUT/ are forced into
LOW and HIGH states, respectively. The address is not latched and must remain asserted during normal
operation.
SERIES SPECIFICATIONS
• Programmed delay tolerance: 5% or 2ns,
whichever is greater
• Inherent delay (TD₀): 13ns typical (OUT)
12ns typical (OUT/)
• Setup time and propagation delay:
Address to input setup (T_AIS): 10ns
Disable to output delay (T_DISO): 6ns typ. (OUT)
• Operating temperature: 0° to 70° C
• Temperature coefficient: 100PPM/°C (excludes TD₀)
• Supply voltage V_CC: 5VDC ± 5%
• Supply current: I_CCH = 65ma
I_CCL = 128ma
• Minimum pulse width: 6% of total delay
DASH NUMBER SPECIFICATIONS
Part
Number
PDU18F-.5
PDU18F-1
PDU18F-2
PDU18F-3
PDU18F-4
PDU18F-5
PDU18F-6
PDU18F-8
PDU18F-10
Incremental
Delay
Per Step (ns)
.5 ± .3
1 ± .5
2 ± .5
3 ± 1.0
4 ± 1.0
5 ± 1.5
6 ± 1.5
8 ± 2.0
10 ± 2.0
Total Delay
Change (ns)
127.5 ± 6.4
255 ± 12.8
510 ± 25.5
765 ± 38.3
1,020 ± 51.0
1,275 ± 63.8
1,530 ± 76.5
2,040 ± 102.0
2,550 ± 127.5
NOTE: Any dash number between .5 and 10 not
shown is also available.
1997 Data Delay Devices
Doc #97006
DATA DELAY DEVICES, INC.
1
1/30/06
3 Mt. Prospect Ave. Clifton, NJ 07013