DS1020S-15 Datasheet, PDF (1/9 Pages) Maxim Integrated Products – Programmable 8-Bit Silicon Delay Line

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DS1020
Programmable 8-Bit
Silicon Delay Line
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
IN 1
E2
Q/PO 3
P1 4
P2 5
P3 6
P4 7
GND 8
16
VCC
15 OUT
14 S
IN
1
E
2
13
P7 _Q/PO
3
12
P6
P1 4
11 C
P2
5
P3
6
10
P5
P4
7
9 D ^GND
8
16
VCC
15 OUT
14 S
13 P7
12 P6
11 C
10 P5
9D
DS1020 16-pin DIP (300-mil) DS1020S 16-pin SOIC (300-mil)
See Mech. Drawings Section See Mech. Drawings Section
PIN DESCRIPTION
IN
- Delay Input
P0-P7
- Parallel Program Pins
GND
- Ground
OUT
- Delay Output
V_CC
- +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.
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