PDU138-12 datasheet(1/5 Pages) DATADELAY

Part #	PDU138-12

Description	3-BIT PROGRAMMABLE DELAY LINE (SERIES PDU138)

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Manufacturer	DATADELAY [Data Delay Devices, Inc.]

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PDU138

Doc #02004

DATA DELAY DEVICES, INC.

1

5/6/02

3 Mt. Prospect Ave. Clifton, NJ 07013

3-BIT PROGRAMMABLE

DELAY LINE

(SERIES PDU138)

FEATURES

PACKAGES

•

Digitally programmable in 8 delay steps

•

Monotonic delay-versus-address variation

•

Precise and stable delays

•

Input & outputs fully TTL interfaced & buffered

•

10 T

2L fan-out capability

•

Fits standard 16-pin DIP socket

•

Auto-insertable

FUNCTIONAL DESCRIPTION

The PDU138-series device is a 3-bit digitally programmable delay line.

The delay, TDA, from the input pin (IN) to the output pin (OUT) depends on

the address code (A2-A0) according to the following formula:

TDA = TD0 + TINC * A

where A is the address code, TINC is the incremental delay of the device,

and TD0 is the inherent delay of the device. The incremental delay is

specified by the dash number of the device and can range from 0.5ns

through 50ns, inclusively. The enable pin (EN/) is held LOW during normal

operation. When this signal is brought HIGH, OUT is forced into the LOW

state. The address is not latched and must remain asserted during normal operation.

SERIES SPECIFICATIONS

•

Total programmed delay tolerance: 5% or 1ns,

whichever is greater

•

Inherent delay (TD0): 7ns typical (OUT)

•

Setup time and propagation delay:

Address to input setup (TAIS):

12ns typ.

Disable to output delay (TDISO): 12ns typ.

•

Operating temperature: 0

° to 70° C

•

Temperature coefficient: 100PPM/

°C (excludes TD

0)

•

Supply voltage VCC: 5VDC

± 5%

•

Supply current:

ICCH = 45ma

ICCL = 20ma

•

Minimum pulse width: 20% of total delay

©

data

delay

devices, inc.

®

3

16

15

14

13

12

11

10

9

1

2

3

4

5

6

7

8

N/C

IN

OUT

N/C

EN/

GND

VCC

N/C

A0

A1

A2

PDU138-xx

DIP

PDU138-xxM

Military DIP

PIN DESCRIPTIONS

IN

Delay Line Input

OUT

Non-inverted Output

A2

Address Bit 2

A1

Address Bit 1

A0

Address Bit 0

EN/

Output Enable

VCC

+5 Volts

GND

Ground

DASH NUMBER SPECIFICATIONS

Part

Number

Incremental Delay

Per Step (ns)

Total Delay

Change (ns)

PDU138-.5

.5

± .3

3.5

± 1.0

PDU138-1

1

± .4

7

± 1.0

PDU138-2

2

± .4

14

± 1.0

PDU138-5

5

± .6

35

± 1.8

PDU138-10

10

± 1.0

70

± 3.5

PDU138-12

12

± 1.2

84

± 4.2

PDU138-15

15

± 1.3

105

± 5.3

PDU138-20

20

± 1.5

140

± 7.0

PDU138-40

40

± 2.0

280

± 14.0

PDU138-50

50

± 2.5

350

± 17.5

NOTE: Any dash number between .5 and 50 not

shown is also available.

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