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111799
FEATURES
All-silicon time delay
Models with 0.25 ns and 0.5 ns steps
Programmable using 3-wire serial port or 8-
bit parallel port
Leading and trailing edge accuracy
Economical
Auto-insertable, low profile, 16-pin SOIC
package
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
VCC
- +5 Volts
S
- Mode Select
E- Enable
C
- Serial Port Clock
Q
- Serial Data Output
D
- Serial Data Input
DESCRIPTION
The DS1021 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 faster model (-25) offers a maximum delay of 73.75
ns with an incremental delay of 0.25 ns, while the slower model (-50) has a maximum delay of 137.5 ns
with an incremental delay of 0.5 ns. Both 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 DS1021 is
TTL- and CMOS-compatible, capable of driving 10 74LS-type loads, and features both rising and falling
edge accuracy.
The all-CMOS DS1021 integrated circuit has been designed as a reliable, economic alternative to hybrid
programmable delay lines. It is offered in a space-saving surface mount 16-pin SOIC.
DS1021
Programmable 8-Bit
Silicon Delay Line
www.dalsemi.com
DS1021S 16-Pin SOIC (300-mil)
See Mech. Drawings Section
IN
E
Q/PO
P1
P3
P2
GND
OUT
P6
P5
D
C
P7
VCC
1
2
3
4
5
6
7
16
15
14
13
12
8
9
10
11
P4
S
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相关代理商/技术参数
DS1023 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:8-Bit Programmable Timing Element
DS1023-025 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:8-Bit Programmable Timing Element
DS1023-050 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:8-Bit Programmable Timing Element
DS1023-100 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
DS1023-200 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:8-Bit Programmable Timing Element
DS1023-500 制造商:Maxim Integrated Products 功能描述:- Rail/Tube
DS1023S-025 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:8-Bit Programmable Timing Element
DS1023S-050 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:8-Bit Programmable Timing Element