PDU18F

8-BIT PROGRAMMABLE

DELAY LINE

(SERIES PDU18F)

FEATURES

PACKAGES

•

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 T

•

Fits standard 40-pin DIP socket

•

Auto-insertable

FUNCTIONAL DESCRIPTION

The PDU18F-series device is a 8-bit digitally programmable delay line.

depends on the address code (A7-A0) according to the following formula:

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.

data

delay



3

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

N/C

OUT/

OUT

EN/

GND

N/C

N/C

N/C

GND

N/C

N/C

N/C

N/C

GND

N/C

EN/

A7

IN

N/C

GND

VCC

N/C

A0

A1

A2

VCC

N/C

A3

A4

A5

VCC

N/C

N/C

N/C

N/C

VCC

N/C

A6

N/C

N/C

PDU18F-xx

DIP

PDU18F-xxC5

Gull-Wing

PDU18F-xxM

Military DIP

PDU18F-xxMC5

Military Gull-Wing

PIN DESCRIPTIONS

IN

Delay Line Input

OUT Non-inverted Output

OUT/ Inverted Output

A0-A7 Address Bits

EN/

Output Enable

VCC +5 Volts

GND Ground

DASH NUMBER SPECIFICATIONS

Part

Number

Incremental

Delay

Per Step (ns)

Total Delay

Change (ns)

PDU18F-.5

.5

± .3

127.5

± 6.4

PDU18F-1

1

± .5

255

± 12.8

PDU18F-2

2

± .5

510

± 25.5

PDU18F-3

3

± 1.0

765

± 38.3

PDU18F-4

4

± 1.0

1,020

± 51.0

PDU18F-5

5

± 1.5

1,275

± 63.8

PDU18F-6

6

± 1.5

1,530

± 76.5

PDU18F-8

8

± 2.0

2,040

± 102.0

PDU18F-10

10

± 2.0

2,550

± 127.5

NOTE: Any dash number between .5 and 10 not

shown is also available.

SERIES SPECIFICATIONS

•

Programmed delay tolerance: 5% or 2ns,

whichever is greater

•

12ns typical (OUT/)

•

Setup time and propagation delay:

10ns

•

Operating temperature: 0

° to 70° C

•

Temperature coefficient: 100PPM/

•

•

Supply current:

•

Minimum pulse width: 6% of total delay

1997 Data Delay Devices

Doc #97006

DATA DELAY DEVICES, INC.

1

1/30/06

3 Mt. Prospect Ave. Clifton, NJ 07013