DS1045 Datasheet, PDF (1/6 Pages) Dallas Semiconductor – 4-Bit Dual Programmable Delay Line

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DS1045
4-Bit Dual Programmable Delay Line
FEATURES
All-silicon time delay
Two programmable outputs from a single
input produce output-to-output delays
between 9 and 84 ns depending on device
type
Programmable via four input pins
Programmable increments of 3 to 5 ns with a
minimum of 9 ns and a maximum of 84 ns
Output pulse is a reproduction of input pulse
after
Delay with both leading and trailing edge
accuracy
Standard 16-pin DIP or surface mount 16-pin
SOIC
Auto-insertable
Low-power CMOS design is TTL-compatible
PIN ASSIGNMENT
IN 1
VCC 2
16 VCC
15 EB
EA 3
A0 4
A1 5
A2 6
A3 7
GND 8
14 OUTB
13 B0
12 B1
11 B2
10 B3
9 OUTA
IN 1
VCC 2
EA 3
A0 4
A1 5
A2 6
A3 7
GND 8
16 VCC
15 EB
14 OUTB
13 B0
12 B1
11 B2
10 B3
9 OUTA
DS1045 16-Pin DIP
See Mech. Drawings
Section
DS1045S 16-Pin SOIC (300-mil)
See Mech. Drawings
Section
PIN DESCRIPTION
IN
OUTA, OUTB
A0-A3
B0-B3
- Delay Line Input
- Delay Line Outputs
- Parallel Program Inputs
for OUT1
- Parallel Program Inputs
for OUT2
EA , EB
V_CC
GND
- Enable A and B Inputs
- +5V Input
- Ground
DESCRIPTION
The DS1045 is a programmable silicon delay line having one input and two 4-bit programmable delay
outputs. Each 4-bit programmable output offers the user 16 possible delay values to select from, starting
with a minimum inherent DS1045 delay of 9 ns and a maximum achievable delay in the standard DS1045
family of 84 ns. The standard DS1045 product line provides the user with three devices having uniform
delay increments of 3, 4, and 5 ns, depending on the device. Table 1 presents standard device family and
delay capability. Additionally, custom delay increments are available for special order through Dallas
Semiconductor.
The DS1045 is TTL and CMOS-compatible and capable of driving ten 74LS-type loads. The output
produced by the DS1045 is both rising and falling edge precise. The DS1045 programmable silicon
delay line 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 package.
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