mm74hc251 Fairchild Semiconductor, mm74hc251 Datasheet

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mm74hc251

Manufacturer Part Number
mm74hc251
Description
Mm74hc251 8-channel 3-state Multiplexer
Manufacturer
Fairchild Semiconductor
Datasheet

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Part Number
Manufacturer
Quantity
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Part Number:
mm74hc251M
Manufacturer:
FAIRCHILD/仙童
Quantity:
20 000
© 1999 Fairchild Semiconductor Corporation
MM74HC251M
MM74HC251SJ
MM74HC251MTC
MM74HC251N
MM74HC251
8-Channel 3-STATE Multiplexer
General Description
The MM74HC251 8-channel digital multiplexer with 3-
STATE outputs utilizes advanced silicon-gate CMOS tech-
nology. Along with the high noise immunity and low power
consumption of standard CMOS integrated circuits, it pos-
sesses the ability to drive 10 LS-TTL loads. The large out-
put drive capability and 3-STATE feature make this part
ideally suited for interfacing with bus lines in a bus oriented
system.
This multiplexer features both true (Y) and complement
(W) outputs as well as a STROBE input. The STROBE
must be at a low logic level to enable this device. When the
STROBE input is HIGH, both outputs are in the high
impedance state. When enabled, address information on
the data select inputs determines which data input is routed
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
MTC16
M16D
M16A
N16E
Pin Assignments for DIP, SOIC, SOP and TSSOP
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150” Narrow
16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide
DS005328.prf
Top View
to the Y and W outputs. The 74HC logic family is speed,
function, as well as pinout compatible with the standard
74LS logic family. All inputs are protected from damage
due to static discharge by internal diode clamps to V
ground.
Features
Typical propagation delay
Data select to Y: 26 ns
Wide supply range: 2–6V
Low power supply quiescent current:
80 A maximum (74HC)
3-STATE outputs for interface to bus oriented
systems
Package Description
September 1983
Revised February 1999
www.fairchildsemi.com
CC
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mm74hc251 Summary of contents

Page 1

... MM74HC251 8-Channel 3-STATE Multiplexer General Description The MM74HC251 8-channel digital multiplexer with 3- STATE outputs utilizes advanced silicon-gate CMOS tech- nology. Along with the high noise immunity and low power consumption of standard CMOS integrated circuits, it pos- sesses the ability to drive 10 LS-TTL loads. The large out- ...

Page 2

Truth Table HIGH Logic Level, L LOW Logic Level X Irrelevant, Z High Impedance (off) D0, D1 The level of the respective D input Logic Diagram ...

Page 3

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

Page 4

AC Electrical Characteristics Symbol Parameter Maximum Propagation Delay PHL PLH Maximum ...

Page 5

Physical Dimensions inches (millimeters) unless otherwise noted 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 Package Number M16A Package Number M16D 5 www.fairchildsemi.com ...

Page 6

Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide www.fairchildsemi.com Package Number MTC16 6 ...

Page 7

Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN ...

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