PDU54

4-BIT, ECL-INTERFACED

PROGRAMMABLE DELAY LINE

(SERIES PDU54)

FEATURES

PACKAGES

•

Digitally programmable in 16 delay steps

•

Monotonic delay-versus-address variation

•

Precise and stable delays

•

Input & outputs fully 100K-ECL interfaced & buffered

•

Available in 24-pin DIP (600 mil) socket or SMD

FUNCTIONAL DESCRIPTION

The PDU54-series device is a 4-bit digitally programmable delay line. The

address code (A3-A0) according to the following formula:

the device. The incremental delay is specified by the dash number of the device and can range from

100ps through 3000ps, inclusively. The address is not latched and must remain asserted during normal

operation.

data

delay



3

1

2

3

4

5

6

7

8

9

10

11

12

24

23

22

21

20

19

18

17

16

15

14

13

N/C

N/C

GND

N/C

N/C

N/C

N/C

N/C

GND

OUT

N/C

N/C

IN

N/C

VEE

A3

N/C

N/C

A2

A1

VEE

A0

N/C

N/C

24

23

22

21

20

19

18

17

16

15

14

13

1

2

3

4

5

6

7

8

9

10

11

12

N/C

N/C

GND

N/C

N/C

N/C

N/C

N/C

GND

OUT

N/C

N/C

IN

N/C

VEE

A3

N/C

N/C

A2

A1

VEE

A0

N/C

N/C

PDU54-xx

DIP

PDU54-xxM Military DIP

PDU54-xxC4

SMD

PDU54-xxMC4 Mil SMD

PIN DESCRIPTIONS

IN

Signal Input

OUT Signal Output

A3-A0 Address Bits

VEE

-5 Volts

GND Ground

SERIES SPECIFICATIONS

•

Total programmed delay tolerance: 5% or 40ps,

whichever is greater

•

•

•

Operating temperature: 0

° to 85° C

•

Temperature coefficient: 100PPM/

•

•

Power Supply Current: -300ma typical (50

Ω to -2V)

•

Minimum pulse width: 3ns or 10% of total delay,

whichever is greater

•

Minimum period: 8ns or 2 x pulse width, whichever

is greater

DASH NUMBER SPECIFICATIONS

Part

Number

Incremental Delay

Per Step (ps)

Total Delay

Change (ns)

PDU54-100

100

± 50

1.50

PDU54-200

200

± 60

3.00

PDU54-250

250

± 60

3.75

PDU54-400

400

± 80

6.00

PDU54-500

500

± 100

7.50

PDU54-750

750

± 100

11.25

PDU54-1000

1000

± 200

15.00

PDU54-1200

1200

± 200

18.00

PDU54-1500

1500

± 200

22.50

PDU54-2000

2000

± 400

30.00

PDU54-2500

2500

± 400

37.50

PDU54-3000

3000

± 500

45.00

NOTE: Any dash number between 100 and 3000

not shown is also available.

A3-A0

IN

OUT

Figure 1: Timing Diagram

1997 Data Delay Devices

Doc #98004

DATA DELAY DEVICES, INC.

1

3/18/98

3 Mt. Prospect Ave. Clifton, NJ 07013