MM74HC4538N Fairchild Semiconductor, MM74HC4538N Datasheet

MM74HC4538N

Manufacturer Part Number

MM74HC4538N

Description

IC MULTIVIBRATOR MONO DL 16-DIP

Manufacturer

Fairchild Semiconductor

Series

74HCr

Datasheet

1.MM74HC4538N.pdf (10 pages)

Specifications of MM74HC4538N

Logic Type

Monostable

Independent Circuits

Schmitt Trigger Input

Yes

Propagation Delay

26ns

Current - Output High, Low

5.2mA, 5.2mA

Voltage - Supply

2 V ~ 6 V

Operating Temperature

-40°C ~ 85°C

Mounting Type

Through Hole

Package / Case

16-DIP (0.300", 7.62mm)

Elements Per Chip

Logic Family

Input Bias Current (max)

130 mA

Propagation Delay Time

275 ns, 55 ns, 47 ns

High Level Output Current

- 5.2 mA

Low Level Output Current

5.2 mA

Supply Voltage (max)

6 V

Supply Voltage (min)

2 V

Maximum Operating Temperature

+ 85 C

Minimum Operating Temperature

- 40 C

Mounting Style

Through Hole

Operating Supply Voltage

2.5 V, 3.3 V, 5 V

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Other names

74HC4538

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MM74HC4538M

MM74HC4538SJ

MM74HC4538N

MM74HC4538

Dual Retriggerable Monostable Multivibrator

General Description

The MM74HC4538 high speed monostable multivibrator

(one shots) is implemented in advanced silicon-gate

CMOS technology. They feature speeds comparable to low

power Schottky TTL circuitry while retaining the low power

and high noise immunity characteristic of CMOS circuits.

Each multivibrator features both a negative, A, and a posi-

tive, B, transition triggered input, either of which can be

used as an inhibit input. Also included is a clear input that

when taken low resets the one shot. The MM74HC4538 is

retriggerable. That is, it may be triggered repeatedly while

their outputs are generating a pulse and the pulse will be

extended.

Ordering Code:

Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.

Connection Diagram

Order Number

Package Number

M16A

M16D

N16E

16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow

16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide

16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide

DS005217

Pulse width stability over a wide range of temperature and

supply is achieved using linear CMOS techniques. The out-

put pulse equation is simply: PW

in seconds, R is in ohms, and C is in farads. This device is

pin compatible with the CD4528, and the CD4538 one

shots. All inputs are protected from damage due to static

discharge by diodes to V

Features

Truth Table

Schmitt trigger on A and B inputs

Wide power supply range: 2–6V

Typical trigger propagation delay: 32 ns

Fanout of 10 LS-TTL loads

Low input current: 1 A max

LOW Level

Transition from LOW-to-HIGH

Transition from HIGH-to-LOW

Irrelevant

HIGH Level

One HIGH Level Pulse

One LOW Level Pulse

Clear

Package Description

Inputs

and ground.

February 1984

Revised August 2000

0.7(R)(C) where PW is

www.fairchildsemi.com

Outputs

Related parts for MM74HC4538N

MM74HC4538N Summary of contents

Page 1

... Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow MM74HC4538SJ M16D 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide MM74HC4538N N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. ...

Page 2

Block Diagrams Note: Pin 1 and Pin 15 must be hard-wired to GND. Logic Diagram www.fairchildsemi.com 2 ...

Page 3

Timing Diagram Circuit Operation The MM74HC4538 operates as follows (refer to logic dia- gram). In the quiescent state, the external timing capacitor charged When a trigger occurs, the Q output X CC goes HIGH ...

Page 4

Circuit Operation (Continued) toggle, taking the Q output of the HC4538 to a LOW State (#19), and completing the time-out cycle. RESET OPERATION A low voltage applied to the Reset pin always forces the Q output of the HC4538 to ...

Page 5

Absolute Maximum Ratings (Note 2) Supply Voltage ( Input Voltage ( Output Voltage (V ) OUT Clamp Diode Current ( Output Current, per pin (I ) OUT DC ...

Page 6

DC Electrical Characteristics Note 5: The device must be set up with 3 steps before measuring I AC Electrical Characteristics 5V pF Symbol Parameter t ...

Page 7

AC Electrical Characteristics Symbol Parameter t Output Pulse Width Output Pulse Width Maximum Input IN Capacitance (Pins 2 & 14) C Maximum Input IN Capacitance (other inputs) C ...

Page 8

Physical Dimensions inches (millimeters) unless otherwise noted 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow www.fairchildsemi.com Package Number M16A 8 ...

Page 9

Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide Package Number M16D 9 www.fairchildsemi.com ...

Page 10

Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right ...

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