DDU7C

Doc #97019

DATA DELAY DEVICES, INC.

1

1/30/97

3 Mt. Prospect Ave. Clifton, NJ 07013

10-TAP, TTL-INTERFACED

FIXED DELAY LINE

(SERIES DDU7C)

FEATURES

PACKAGES

•

Ten equally spaced outputs

•

Fits standard 16-pin DIP socket

•

Low profile

•

Auto-insertable

•

Input & outputs fully CMOS interfaced & buffered

•

10 T

FUNCTIONAL DESCRIPTION

The DDU7C-series device is a 10-tap digitally buffered delay line. The

signal input (IN) is reproduced at the outputs (T1-T10), shifted in time by an

amount determined by the device dash number. The nominal tap-to-tap

delay increment is given by 1/10 of the dash number. For dash numbers

less than 50, the total delay of the line is measured from T1 to T10, with the

nominal value given by 9 times the increment. The inherent delay from IN to T1 is nominally 8.0ns. For

dash numbers greater than or equal to 50, the total delay of the line is measured from IN to T10, with the

nominal value given by the dash number.

SERIES SPECIFICATIONS

•

Minimum input pulse width: 20% of total delay

•

Output rise time: 8ns typical

•

Supply voltage:

5VDC

± 5%

•

Supply current:

µa typical

•

Operating temperature: 0

° to 70° C

•

Temp. coefficient of total delay: 300 PPM/

°C

10%

10%

10%

10%

VCC

GND

IN

T1

T2

T3

T4

T10

Functional diagram for dash numbers < 50

3.5ns

10%

10%

10%

10%

T5

T6

T7

T8

10%

T9

10%

10%

10%

10%

VCC

GND

IN

T1

T2

T3

T4

T10

Functional diagram for dash numbers >= 50

10%

10%

10%

10%

T5

T6

T7

T8

10%

T9

10%

©

©1997 Data Delay Devices

data

delay

®

®

3

16

15

14

13

12

11

10

9

1

2

3

4

5

6

7

8

IN

T2

T4

T6

T8

T10

N/C

GND

VDD

T1

T3

T5

T7

T9

N/C

N/C

14

13

12

11

10

9

8

1

2

3

4

5

6

7

IN

N/C

T2

T4

T6

T8

GND

VDD

T1

T3

T5

T7

T9

T10

DDU7C-xx

DIP

DDU7C-xxA3

Gull-Wing

DDU7C-xxB3

J-Lead

DDU7F-xxMC3

Military SMD

Military DIP

DDU7C-xxM

PIN DESCRIPTIONS

IN

Signal Input

T1-T10 Tap Outputs

VDD

+5 Volts

GND

Ground

DASH NUMBER SPEC.’S

Part

Number

Total

Delay (ns)

Delay Per

Tap (ns)

DDU7C-25

22.5

± 2.0 *

2.5

± 1.0

DDU7C-100

100

± 5.0

10.0

± 2.0

DDU7C-150

150

± 7.5

15.0

± 2.0

DDU7C-200

200

± 10.0

20.0

± 2.0

DDU7C-250

250

± 12.5

25.0

± 2.0

DDU7C-300

300

± 15.0

30.0

± 3.0

DDU7C-400

400

± 20.0

40.0

± 4.0

DDU7C-500

500

± 25.0

50.0

± 5.0

* Total delay is referenced to first tap

Input to first tap = 8.0ns

±± 2ns

NOTE: Any dash number between 25 and

500 not shown is also available.