DDU37F-50M datasheet(2/3 Pages) DATADELAY

Part #	DDU37F-50M

Description	MECHANICALLY VARIABLE TTL DELAY LINE

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Manufacturer	DATADELAY [Data Delay Devices, Inc.]

Direct Link	http://www.datadelay.com

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2 / 3 page

DDU37F

Doc #01016

DATA DELAY DEVICES, INC.

2

11/12/01

Tel: 973-773-2299

Fax: 973-773-9672

http://www.datadelay.com

APPLICATION NOTES

HIGH FREQUENCY RESPONSE

The DDU37F 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 DDU37F 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

Input Voltage

IIHH

0.1

mA

VCC = MAX, VI = 7.0V

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

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