DADD DDU222F-75M, DDU222F-75, DDU222F-6M, DDU222F-60M, DDU222F-60 Datasheet

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DADD DDU222F-75M, DDU222F-75, DDU222F-6M, DDU222F-60M, DDU222F-60 Datasheet

DDU222F

5-TAP, TTL-INTERFACED FIXED DELAY LINE (SERIES DDU222F)

data 3 ® delay

devices, inc.

FEATURES

Five equally spaced outputs

Very narrow device (SIP package)

Stackable for PC board economy

Input & outputs fully TTL interfaced & buffered

10 T2L fan-out capability

PACKAGES

1 2 3 4 5 6 7 8

VCC IN T1 T2 T3 T4 T5 GND

DDU222F-xx Commercial

DDU222F-xxM Military

FUNCTIONAL DESCRIPTION

PIN DESCRIPTIONS

The DDU222F-series device is a 5-tap digitally buffered delay line. The

IN

Signal Input

signal input (IN) is reproduced at the outputs (T1-T5), shifted in time by an

T1-T5

Tap Outputs

amount given by the device dash number. For dash numbers less than

VCC

+5 Volts

25, the total delay of the line is measured from T1 to T5, with the nominal

GND

Ground

value given by the dash number. The nominal tap-to-tap delay increment

 

 

is given by 1/4 of this number. The inherent delay from IN to T1 is nominally 3.5ns. For dash numbers greater than or equal to 25, the total delay of the line is measured from IN to T5, with the nominal value given by the dash number. The nominal tap-to-tap delay increment is given by 1/5 of this number.

SERIES SPECIFICATIONS

Minimum input pulse width: 40% of total delay

Output rise time: 2ns typical

Supply voltage: 5VDC ± 5%

Supply current: ICCL = 32ma typical

ICCH = 7ma typical

Operating temperature: 0° to 70° C

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

3.5ns 25% 25% 25% 25%

VCC IN

T1

T2

T3

T4

T5 GND

Functional diagram for dash numbers < 25

20% 20% 20% 20% 20%

VCC IN

T1

T2

T3

T4

T5 GND

Functional diagram for dash numbers >= 25

©1997 Data Delay Devices

DASH NUMBER SPECIFICATIONS

Part

Total

Delay Per

Number

Delay (ns)

Tap (ns)

DDU222F-4

4 ± 1.0 *

1.0 ± 0.5

DDU222F-6

6 ± 1.0 *

1.5 ± 0.5

DDU222F-8

8 ± 2.0 *

2.0 ± 1.0

DDU222F-10

10 ± 2.0 *

2.5 ± 1.0

DDU222F-12

12 ± 2.0 *

3.0 ± 1.0

DDU222F-16

16 ± 2.0 *

4.0 ± 1.5

DDU222F-25

25

± 3.0

5.0 ± 2.0

DDU222F-30

30

± 3.0

6.0 ± 2.0

DDU222F-35

35

± 3.0

7.0 ± 2.0

DDU222F-40

40

± 3.0

8.0 ± 2.0

DDU222F-45

45

± 3.0

9.0 ± 3.0

DDU222F-50

50

± 3.0

10.0 ± 3.0

DDU222F-60

60

± 3.0

12.0 ± 3.0

DDU222F-75

75

± 4.0

15.0 ± 3.0

DDU222F-100

100 ± 5.0

20.0 ± 3.0

DDU222F-125

125 ± 6.5

25.0 ± 3.0

DDU222F-150

150 ± 7.5

30.0 ± 3.0

DDU222F-175

175 ± 8.0

35.0 ± 4.0

DDU222F-200

200

± 10.0

40.0 ± 4.0

DDU222F-250

250

± 12.5

50.0 ± 5.0

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

NOTE: Any dash number between 4 and 250 not shown is also available.

Doc #97011

DATA DELAY DEVICES, INC.

1

1/27/97

3 Mt. Prospect Ave. Clifton, NJ 07013

DDU222F

APPLICATION NOTES

HIGH FREQUENCY RESPONSE

The DDU222F 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 40% of the total delay and periods as small as 80% 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 DDU222F 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

VDD+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 #97011

DATA DELAY DEVICES, INC.

2

1/27/97

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

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