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111799

FEATURES

All-silicon time delay

Models with 0.15 ns, 0.25 ns, 0.5 ns, 1 ns,

and 2 ns steps

Programmable using 3-wire serial port or

8-bit parallel port

Leading and trailing edge accuracy

Standard 16-pin DIP or 16-pin SOIC

Economical

Auto-insertable, low profile

Low-power CMOS

TTL/CMOS-compatible

Vapor phase, IR and wave solderable

PIN ASSIGNMENT

PIN DESCRIPTION

IN

- Delay Input

P0-P7

- Parallel Program Pins

GND

- Ground

OUT

- Delay Output

- +5 Volts

S

- Mode Select

E- Enable

C

- Serial Port Clock

Q

- Serial Data Output

D

- Serial Data Input

DESCRIPTION

The DS1020 Programmable 8-Bit Silicon Delay Line consists of an 8-bit, user-programmable CMOS

silicon integrated circuit. Delay values, programmed using either the 3-wire serial port or the 8-bit

parallel port, can be varied over 256 equal steps. The fastest model (-15) offers a maximum delay of

48.25 ns with an incremental delay of 0.15 ns, while the slowest model (-200) has a maximum delay of

520 ns with an incremental delay of 2 ns. All models have an inherent (step-zero) delay of 10 ns. After

the user-determined delay, the input logic state is reproduced at the output without inversion. The

DS1020 is TTL- and CMOS-compatible, capable of driving 10 74LS-type loads, and features both rising

and falling edge accuracy.

The all-CMOS DS1020 integrated circuit has been designed as a reliable, economic alternative to hybrid

programmable delay lines. It is offered in a standard 16-pin auto-insertable DIP and a space-saving

surface mount 16-pin SOIC.

DS1020

Programmable 8-Bit

Silicon Delay Line

www.dalsemi.com

1

2

3

4

5

6

7

8

16

15

14

13

9

10

11

12

OUT

S

P7

P6

C

P5

D

IN

E

Q/PO

P1

P2

P3

P4

GND

DS1020 16-pin DIP (300-mil)

See Mech. Drawings Section

Q/PO

1

2

3

4

16

15

14

13

5

6

7

89

10

11

12

OUT

S

P7

P6

C

P5

D

IN

E

P1

P2

P3

P4

GND

DS1020S 16-pin SOIC (300-mil)

See Mech. Drawings Section