DADD DDU7F-50MC3, DDU7F-50M, DDU7F-50B2, DDU7F-50A2, DDU7F-500MC3 Datasheet

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DADD DDU7F-50MC3, DDU7F-50M, DDU7F-50B2, DDU7F-50A2, DDU7F-500MC3 Datasheet

DDU7F

10-TAP, TTL-INTERFACED FIXED DELAY LINE (SERIES DDU7F)

data 3 ® delay

devices, inc.

FEATURES

Ten equally spaced outputs

Fits standard 14-pin DIP socket

Low profile

Auto-insertable

Input & outputs fully TTL interfaced & buffered

10 T2L fan-out capability

PACKAGES

IN

 

1

14

 

 

VCC

 

 

 

 

 

 

 

 

 

IN

 

1

16

 

VCC

 

 

 

 

N/C

 

2

13

 

 

T1

T2

 

2

15

 

T1

 

 

 

 

 

 

 

 

T4

 

3

14

 

T3

T2

 

 

12

 

 

T3

 

 

 

3

 

 

T6

 

4

13

 

T5

T4

 

4

11

 

 

T5

T8

 

5

12

 

T7

T6

 

 

5

10

 

 

T7

T10

 

6

11

 

T9

 

 

 

 

N/C

 

7

10

 

N/C

T8

 

 

6

9

 

 

T9

GND

 

8

9

 

N/C

GND

 

 

7

8

 

 

T10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DDU7F-xx

DIP

 

 

Military SMD

 

DDU7F-xxA2 Gull-Wing

 

DDU7F-xxMC3

 

DDU7F-xxB2

J-Lead

 

 

 

 

 

 

DDU7F-xxM

Military DIP

 

 

 

 

 

 

FUNCTIONAL DESCRIPTION

PIN DESCRIPTIONS

The DDU7F-series device is a 10-tap digitally buffered delay line. The

IN

Signal Input

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

T1-T10

Tap Outputs

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

VCC

+5 Volts

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

GND

Ground

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 3.5ns. 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: 2ns typical

Supply voltage: 5VDC ± 5%

Supply current: ICCL = 50ma typical

ICCH = 15ma typical

Operating temperature: 0° to 70° C

Temp. coefficient of total delay: 100 PPM/°C

3.5ns 10% 10% 10% 10% 10% 10% 10% 10% 10%

VCC IN

T1

T2

T3

T4

T5

T6

T7

T8

T9 T10 GND

Functional diagram for dash numbers < 50

10% 10% 10% 10% 10% 10% 10% 10% 10% 10%

VCC IN T1

T2

T3

T4

T5

T6

T7

T8

T9 T10 GND

Functional diagram for dash numbers >= 50

©1997 Data Delay Devices

DASH NUMBER SPEC.’S

Part

Total

Delay Per

Number

Delay (ns)

Tap (ns)

DDU7F-10

9 ± 2.0 *

1.0 ± 0.5

DDU7F-20

18 ± 2.0 *

2.0 ± 1.0

DDU7F-25

22.5 ± 2.0 *

2.5 ± 1.0

DDU7F-50

50

± 2.5

5.0 ± 2.0

DDU7F-100

100 ± 5.0

10.0 ± 3.0

DDU7F-150

150 ± 7.5

15.0 ± 3.0

DDU7F-200

200

± 10.0

20.0 ± 3.0

DDU7F-250

250

± 12.5

25.0 ± 3.0

DDU7F-300

300

± 15.0

30.0 ± 3.0

DDU7F-400

400

± 20.0

40.0 ± 4.0

DDU7F-500

500

± 25.0

50.0 ± 5.0

*Total delay is referenced to first tap Input to first tap = 3.5ns ± 1ns

NOTE: Any dash number between 10 and 500 not shown is also available.

Doc #97016

DATA DELAY DEVICES, INC.

1

1/29/97

3 Mt. Prospect Ave. Clifton, NJ 07013

DDU7F

APPLICATION NOTES

HIGH FREQUENCY RESPONSE

The DDU7F tolerances are guaranteed for input pulse widths and periods greater than those specified in the test conditions. Although the device will function properly for pulse widths as small as 20% of the total delay and periods as small as 40% of the total delay (for a symmetric input), the delays may deviate from their values at low frequency. However, for a given input condition, the deviation will be repeatable from pulse to pulse. Contact technical support at Data

Delay Devices if your application requires device testing at a specific input condition.

POWER SUPPLY BYPASSING

The DDU7F relies on a stable power supply to produce repeatable delays within the stated tolerances. A 0.1uf capacitor from VCC to GND, located as close as possible to the VCC pin, is recommended. A wide VCC trace and a clean ground plane should be used.

DEVICE SPECIFICATIONS

TABLE 1: ABSOLUTE MAXIMUM RATINGS

PARAMETER

SYMBOL

MIN

MAX

UNITS

NOTES

DC Supply Voltage

VCC

-0.3

7.0

V

 

Input Pin Voltage

VIN

-0.3

VCC+0.3

V

 

Storage Temperature

TSTRG

-55

150

C

 

Lead Temperature

TLEAD

 

300

C

10 sec

TABLE 2: DC ELECTRICAL CHARACTERISTICS

(0C to 70C, 4.75V to 5.25V)

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

NOTES

High Level Output Voltage

VOH

2.5

3.4

 

V

VCC = MIN, IOH = MAX

 

 

 

 

 

 

VIH = MIN, VIL = MAX

Low Level Output Voltage

VOL

 

0.35

0.5

V

VCC = MIN, IOL = MAX

 

 

 

 

 

 

VIH = MIN, VIL = MAX

High Level Output Current

IOH

 

 

-1.0

mA

 

Low Level Output Current

IOL

 

 

20.0

mA

 

High Level Input Voltage

VIH

2.0

 

 

V

 

Low Level Input Voltage

VIL

 

 

0.8

V

 

Input Clamp Voltage

VIK

 

 

-1.2

V

VCC = MIN, II = IIK

Input Current at Maximum

IIHH

 

 

0.1

mA

VCC = MAX, VI = 7.0V

Input Voltage

 

 

 

 

 

 

High Level Input Current

IIH

 

 

20

μA

VCC = MAX, VI = 2.7V

Low Level Input Current

IIL

 

 

-0.6

mA

VCC = MAX, VI = 0.5V

Short-circuit Output Current

IOS

-60

 

-150

mA

VCC = MAX

Output High Fan-out

 

 

 

25

Unit

 

Output Low Fan-out

 

 

 

12.5

Load

 

Doc #97016

DATA DELAY DEVICES, INC.

2

1/29/97

Tel: 973-773-2299 Fax: 973-773-9672 http://www.datadelay.com

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