dallas semiconductor DS1044 service manual

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DS1044

DS1044

4–in–1 High–Speed Silicon Delay Line

FEATURES

• All–silicon timing circuit

• Four independent buffered delays

• Initial delay tolerance ±1.5 ns

• Stable and precise over temperature and voltage

• Leading and trailing edge precision preserves the

input symmetry

• Standard 14–pin DIP, 14–pin SOIC (150 mil)

• Vapor phase, IR and wave solderable

• Available in Tape and Reel

PIN ASSIGNMENT

1

IN1

2

NC

3

IN2

4

IN3

5

IN4

6

NC

7

GND

DS1044 14–PIN DIP

DS1044R 14–PIN SOIC (150 MIL)

See Mech. Drawings

14
13
12
11
10

9
8

Section

PIN DESCRIPTION

IN1–IN4 – Input Signals
OUT1–OUT4 – Output Signals
NC – No Connection
V

CC

GND – Ground

– +5 Volt Supply

V

CC

NC
OUT1
NC
OUT2
OUT3
OUT4

DESCRIPTION

The DS1044 series is a 4–in–1 version of the low–
power, +5 V olt, high speed, DS1035.

The DS1044 series of delay lines have four independent
logic buffered delays in a single package. The device is
Dallas Semiconductor’s fastest 4–in–1 delay line. It is
available in a standard 14–pin DIP and 14–pin SOIC.

The device features precise leading and trailing edge
accuracies. It has the inherent reliability of an all–silicon

delay line solution. The DS1044’s nominal tolerance is
±1.5 ns and an additional tolerance over temperature
and voltage of ±1.0 ns for the faster delays. Each output
is capable of driving up to 10 LS loads.

Standard delay values are indicated in Table 1. Cus­tomers may contact Dallas Semiconductor at (972)
371–4348 for further information.

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DS1044

LOGIC DIAGRAM Figure 1

IN OUT

PART NUMBER DELAY TABLE (t

PART NUMBER

DELAY PER OUTPUT

PLH

(ns)

, t

PHL

TIME DELAY

ONE OF FOUR

) Table 1

INITIAL TOLERANCE

DS1044–5 5 ±1.5 ns ±1.0 ns
DS1044–6 6 ±1.5 ns ±1.0 ns
DS1044–7 7 ±1.5 ns ±1.0 ns

DS1044–8 8 ±1.5 ns ±1.0 ns
DS1044–10 10 ±1.5 ns ±1.0 ns
DS1044–12 12 ±1.5 ns ±1.0 ns
DS1044–14 14 ±1.5 ns ±1.5 ns
DS1044–18 18 ±1.5 ns ±1.5 ns
DS1044–20 20 ±1.5 ns ±1.5 ns
DS1044–25 25 ±2.0 ns ±1.5 ns

NOTES:

1. Nominal conditions are +25°C and VCC=+5.0 volts.

2. T emperature range of 0°C to 70° C and voltage range of 4.75 volts to 5.25 volts.

3. Delay accuracy are for both leading and trailing edges.

TOLERANCE OVER

(temp and voltage)

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