74ACT157MTCX

74ACT157MTCX Datasheet

74AC157<br>• 74ACT157 Quad 2-Input Multiplexer

Part	Datasheet
74ACT157MTCX	74ACT157MTCX (pdf)

Related Parts	Information
74AC157SC	74AC157SC
74ACT157PC	74ACT157PC
74AC157PC	74AC157PC
74ACT157SC	74ACT157SC
74ACT157SJX	74ACT157SJX
74AC157MTCX	74AC157MTCX
74AC157MTC	74AC157MTC
74ACT157MTC	74ACT157MTC
74ACT157SJ	74ACT157SJ
74ACT157SCX	74ACT157SCX
74AC157SJX	74AC157SJX
74AC157SJ	74AC157SJ
74AC157SCX	74AC157SCX

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74AC157 • 74ACT157 Quad 2-Input Multiplexer 74AC157 • 74ACT157 Quad 2-Input Multiplexer The AC/ACT157 is a high-speed quad 2-input multiplexer. Four bits of data from two sources can be selected using the common Select and Enable inputs. The four outputs present the selected data in the true noninverted form. The AC/ACT157 can also be used as a function generator. s ICC and IOZ reduced by 50% s Outputs source/sink 24 mA s ACT157 has TTL-compatible inputs Ordering Code: Order Number Package Number Package Description 74AC157SC M16A 16-Lead Small Outline Integrated Circuit SOIC , JEDEC MS-012, Narrow Body 74AC157SJ M16D 16-Lead Small Outline Package SOP , EIAJ TYPE II, 5.3mm Wide 74AC157MTC MTC16 16 -Lead Thin Shrink Small Outline Package TSSOP , JEDEC MO-153, 4.4mm Wide 74AC157PC N16E 16-Lead Plastic Dual-In-Line Package PDIP , JEDEC MS-001, Wide 74ACT157SC M16A 16-Lead Small Outline Integrated Circuit SOIC , JEDEC MS-012, Narrow Body 74ACT157SJ M16D 16-Lead Small Outline Package SOP , EIAJ TYPE II, 5.3mm Wide 74ACT157MTC MTC16 16 -Lead Thin Shrink Small Outline Package TSSOP , JEDEC MO-153, 4.4mm Wide 74ACT157PC N16E 16-Lead Plastic Dual-In-Line Package PDIP , JEDEC MS-001, Wide Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code. Logic Symbols Connection Diagram IEEE/IEC Pin Descriptions Pin Names E S Description Source 0 Data Inputs Source 1 Data Inputs Enable Input Select Input Outputs is a trademark of Fairchild Semiconductor Corporation. 1999 Fairchild Semiconductor Corporation DS009929 74AC157 • 74ACT157 Functional Description The AC/ACT157 is a quad 2-input multiplexer. It selects four bits of data from two sources under the control of a common Select input S . The Enable input E is activeLOW. When E is HIGH, all of the outputs Z are forced LOW regardless of all other inputs. The AC/ACT157 is the logic implementation of a 4-pole, 2-position switch where the position of the switch is determined by the logic levels supplied to the Select input. The logic equations for the outputs are shown below: Za = E • I1a • S + I0a • S Zb = E • I1b • S + I0b • S Zc = E • I1c • S + I0c • S Zd = E • I1d • S + I0d • S A common use of the AC/ACT157 is the moving of data from two groups of registers to four common output busses. The particular register from which the data comes is determined by the state of the Select input. A less obvious use is as a function generator. The AC/ACT157 can generate any four of the sixteen different functions of two variables with one variable common. This is useful for implementing gating functions. Truth Table Inputs H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Logic Diagram Outputs Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays. 74AC157 • 74ACT157 Absolute Maximum Ratings Note 1 Supply Voltage VCC DC Input Diode Current IIK VI = −0.5V VI = VCC + 0.5V DC Input Voltage VI DC Output Diode Current IOK VO = −0.5V VO = VCC + 0.5V DC Output Voltage VO DC Output Source or Sink Current IO DC VCC or Ground Current per Output Pin ICC or IGND Storage Temperature TSTG Junction Temperature TJ PDIP −0.5V to +7.0V −20 mA +20 mA −0.5V to VCC + 0.5V −20 mA +20 mA −0.5V to VCC + 0.5V ±50 mA ±50 mA −65°C to +150°C 140°C Recommended Operating Conditions Supply Voltage VCC AC 2.0V to 6.0V 4.5V to 5.5V Input Voltage VI Output Voltage VO Operating Temperature TA Minimum Input Edge Rate

PDF Datasheet Preview

74AC157
• 74ACT157 Quad 2-Input Multiplexer
74AC157
• 74ACT157 Quad 2-Input Multiplexer

The AC/ACT157 is a high-speed quad 2-input multiplexer. Four bits of data from two sources can be selected using the common Select and Enable inputs. The four outputs present the selected data in the true noninverted form. The AC/ACT157 can also be used as a function generator.
s ICC and IOZ reduced by 50% s Outputs source/sink 24 mA s ACT157 has TTL-compatible inputs
Ordering Code:

Order Number Package Number

Package Description
74AC157SC

M16A
16-Lead Small Outline Integrated Circuit SOIC , JEDEC MS-012, Narrow Body
74AC157SJ

M16D
16-Lead Small Outline Package SOP , EIAJ TYPE II, 5.3mm Wide
74AC157MTC

MTC16
16 -Lead Thin Shrink Small Outline Package TSSOP , JEDEC MO-153, 4.4mm Wide
74AC157PC

N16E
16-Lead Plastic Dual-In-Line Package PDIP , JEDEC MS-001, Wide
74ACT157SC

M16A
16-Lead Small Outline Integrated Circuit SOIC , JEDEC MS-012, Narrow Body
74ACT157SJ

M16D
16-Lead Small Outline Package SOP , EIAJ TYPE II, 5.3mm Wide
74ACT157MTC

MTC16
16 -Lead Thin Shrink Small Outline Package TSSOP , JEDEC MO-153, 4.4mm Wide
74ACT157PC

N16E
16-Lead Plastic Dual-In-Line Package PDIP , JEDEC MS-001, Wide
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.

Logic Symbols

Connection Diagram

IEEE/IEC

Pin Descriptions

Pin Names E S

Description Source 0 Data Inputs Source 1 Data Inputs Enable Input Select Input Outputs
is a trademark of Fairchild Semiconductor Corporation.
1999 Fairchild Semiconductor Corporation DS009929
74AC157
• 74ACT157

Functional Description

The AC/ACT157 is a quad 2-input multiplexer. It selects four bits of data from two sources under the control of a common Select input S . The Enable input E is activeLOW. When E is HIGH, all of the outputs Z are forced LOW regardless of all other inputs. The AC/ACT157 is the logic implementation of a 4-pole, 2-position switch where the position of the switch is determined by the logic levels supplied to the Select input. The logic equations for the outputs are shown below:

Za = E
• I1a
• S + I0a
• S

Zb = E
• I1b
• S + I0b
• S

Zc = E
• I1c
• S + I0c
• S

Zd = E
• I1d
• S + I0d
• S

A common use of the AC/ACT157 is the moving of data from two groups of registers to four common output busses. The particular register from which the data comes is determined by the state of the Select input. A less obvious use is as a function generator. The AC/ACT157 can generate any four of the sixteen different functions of two variables with one variable common. This is useful for implementing gating functions.

Truth Table

Inputs

H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial

Logic Diagram

Outputs

Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
74AC157
• 74ACT157

Absolute Maximum Ratings Note 1

Supply Voltage VCC DC Input Diode Current IIK

VI = −0.5V VI = VCC + 0.5V DC Input Voltage VI DC Output Diode Current IOK VO = −0.5V VO = VCC + 0.5V DC Output Voltage VO DC Output Source
or Sink Current IO DC VCC or Ground Current
per Output Pin ICC or IGND Storage Temperature TSTG Junction Temperature TJ

PDIP
−0.5V to +7.0V
−20 mA +20 mA −0.5V to VCC + 0.5V
−20 mA +20 mA −0.5V to VCC + 0.5V
±50 mA
±50 mA −65°C to +150°C
140°C

Recommended Operating Conditions

Supply Voltage VCC AC
2.0V to 6.0V
4.5V to 5.5V

Input Voltage VI Output Voltage VO Operating Temperature TA Minimum Input Edge Rate

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Datasheet ID: 74ACT157MTCX 513079