General Description

The DS1124 is an 8-bit programmable timing element

similar in function to the DS1021-25. The 256-delay

intervals are programmed by using a 3-wire serial inter-

face. With a 0.25ns step size, the DS1124 can provide

a delay time from 20ns up to 84ns with an integral non-

linearity of ±3ns.

Applications

LCD Televisions

Telecommunications

Digital Test Equipment

Digital Video Projection

Signal Generators and Analyzers

Features

♦ 0.25ns Step Size

♦ Leading- and Trailing-Edge Accuracy

♦ CMOS/TTL Compatible

♦ Can Delay Signals by a Full Period or More

♦ 3-Wire Serial Programming Interface

♦ Single 5.0V Power Supply

♦ 10-pin µSOP Package

5.0V 8-Bit Programmable

Timing Element

Rev 1; 4/09

+

Denotes a lead(Pb)-free/RoHS-compliant package.

T = Tape and reel.

Ordering Information

PART

TEMP RANGE

PIN-PACKAGE

DS1124U-25+

-40°C to +85°C

10 μSOP

DS1124U-25+T

-40°C to +85°C

10 μSOP

1

2

3

4

5

10

9

8

7

6

D

CLK

GND

Q

E

IN

µSOP

TOP VIEW

OUT

GND

+

DS1124

Pin Configuration

GND

OUT

E

IN

Q

CLK

D

MICROPROCESSOR

SYSTEM CLOCK

OPTIONAL

VARIABLE DELAY

DS1124

Typical Operating Circuit

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Maxim Integrated Products

1

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.