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1 of 16 070505
FEATURES
§ 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
PIN ASSIGNMENT
PIN DESCRIPTION
IN - Input
P0/Q - Parallel Input P0 (parallel mode)
- Serial Data Output (serial mode)
P1/CLK - Parallel Input P1 (parallel mode)
- Serial Input Clock (serial mode)
P2/D - Parallel Input P2 (parallel mode)
- Serial Data Input (serial mode)
P3 - P7 - Remaining Parallel Inputs
GND - Ground
OUT/ OUT - Output
REF/PWM - Reference or PWM Output
P /S - Parallel / Serial Programming
Select
MS - Output Mode Select
LE - Input Latch Enable
V
CC
- 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.
DS1023
8-Bit Programmable Timing Element
www.maxim-ic.com
IN
LE
Q/P0
CLK/P1
D/P2
P3
P4
GND
16
15
14
13
12
11
10
9
V
CC
OUT/OUT
REF/PWM
P/S
P7
P6
MS
P5
1
2
3
4
5
6
7
8
DS1023 300-mil DIP
DS1023S 300-mil SOIC
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