DS1023
8-Bit Programmable Timing Element
www.maxim-ic.com
FEATURES
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PIN ASSIGNMENT
Step sizes of 0.25 ns, 0.5 ns, 1 ns, 2 ns, 5 ns
On-chip reference delay
Configurable as delay line, pulse width
modulator, or free-running oscillator
Can delay clocks by a full period or more
Guaranteed monotonicity
Parallel or serial programming
Single 5V supply
16-pin DIP or SOIC package
IN
1
16
VCC
LE
2
15
OUT/OUT
Q/P0
3
14
P/S
CLK/P1
4
13
P7
D/P2
5
12
P6
P3
6
11
MS
P4
7
10
P5
8
9
GND
REF/PWM
DS1023 300-mil DIP
DS1023S 300-mil SOIC
PIN DESCRIPTION
IN
P0/Q
P1/CLK
P2/D
P3 - P7
GND
OUT/ OUT
REF/PWM
P /S
MS
LE
VCC
- Input
- Parallel Input P0 (parallel mode)
- Serial Data Output (serial mode)
- Parallel Input P1 (parallel mode)
- Serial Input Clock (serial mode)
- Parallel Input P2 (parallel mode)
- Serial Data Input (serial mode)
- Remaining Parallel Inputs
- Ground
- Output
- Reference or PWM Output
- Parallel / Serial Programming
Select
- Output Mode Select
- Input Latch Enable
- Supply Voltage
DESCRIPTION
The DS1023 is an 8-bit programmable delay line similar in function to the DS1020/DS1021.
Additional features have been added to extend the range of applications:
The internal delay line architecture has been revised to allow clock signals to be delayed by up to a full
period or more. Combined with an on-chip reference delay (to offset the inherent or “step zero” delay of
the device) clock phase can now be varied over the full 0-360 degree range.
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