Fairchild Semiconductor 74ACT151SJ, 74ACT151SCX, 74ACT151SC, 74ACT151PC, 74ACT151MTCX Datasheet

© 1999 Fairchild Semiconductor Corporation DS009927 www.fairchildsemi.com

November 1988
Revised November 1999

74AC151 • 74ACT151 8-Input Multiplexer

74AC151 • 74ACT151
8-Input Multiplexer

General Description

The AC/ACT151 is a high -speed 8-input digital mu l tipl ex er.
It provides, in one package, the ability to select o ne line of
data from up to eight sources. The AC/ACT151 can be
used as a universal function generator to generate any
logic function of four variable s. Both true and comple men­tary outputs are provided.

Features

■ ICC reduced by 50%

■ Outputs source/sink 24 mA

■ ACT151 has TTL-compatible inputs

Ordering Code:

Device also available in Tape and Reel. Specify by appending s uffix let te r “X” to the ordering code.

Logic Symbols

IEEE/IEC

Connection Diagram

Pin Descriptions

FACT is a trademark of Fairchild Semiconductor Corporation.

Order Number Package Number Package Description

74AC151SC M16A 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow Body
74AC151SJ M16D 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74AC151MTC MTC16 16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
74AC151PC N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide
74ACT151SC M16A 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow Body
74ACT151SJ M16D 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74ACT151PC N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide

Pin Names Description

I

0–I7

Data Inputs

S

0–S2

Select Inputs

E

Enable Input
Z Data Output
Z

Inverted Data Output

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74AC151 • 74ACT151

Truth Table

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

Functional Description

The AC/ACT151 is a logic imple mentat ion of a sing le pole,
8-position switch with the switch pos ition controlle d by the
state of three Select inputs, S

0

, S1, S2. Both true and com-

plementary outputs are provided. The En able input (E

) is
active LOW. When it is not activa ted, the complementary
output is HIGH and the true output is LOW regardless of all
other inputs. The logic function provided at the output is:

Z = E

• (I0 • S0 • S1 • S2 + I1 • S0 • S1 • S2 +

I

2

• S0 • S1 • S2 + I3 • S0 • S1 • S2 + I4 • S0 • S1 • S2 + I5 •

S

0

• S1 • S2 + I6 • S0 • S1 • S2 + I 7 • S0 • S1 • S2)

The AC/ACT151 provides the ability, in one package, to
select from eight sources of data or con trol info rmatio n. By
proper manipulation of the inputs, the AC/ACT151 can pro­vide any logic function of four variables and its comple­ment.

Logic Diagram

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

Inputs Outputs

E

S

2

S

1

S

0

Z Z

H X X X H L
L L L L I

0

I

0

L L L H I1 I

1

L L H L I2 I

2

L L H H I3 I

3

L H L L I4 I

4

L H L H I5 I

5

L H H L I6 I

6

L H H H I7 I

7

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74AC151 • 74ACT151

Absolute Maximum Ratings(Note 1) Recommended Operating

Conditions

Note 1: Absolute max imum ratings are those values beyond w hich damage

to the device may occu r. The databook spe cificatio ns shou ld be met, wit h­out exception, to ensure that the system de sign is relia ble over its p ower
supply, temperature, and output/input loading variables. Fairchild does not
recommend operation of FACT circuits outside databook specif ic at ions.

DC Electrical Characteristics for AC

Note 2: All outputs loaded; thres holds on input associate d w it h output under test.
Note 3: Maximum test duration 2.0 ms, one output loaded at a time.
Note 4: I

IN

and ICC @ 3.0V are guaranteed to be less than or equa l t o th e respective limit @ 5.5V VCC.

Supply Voltage (VCC) −0.5V to +7.0V
DC Input Diode Current (I

IK

)

V

I

= −0.5V −20 mA

V

I

= VCC + 0.5V +20 mA

DC Input Voltage (V

I

) −0.5V to VCC + 0.5V

DC Output Diode Current (I

OK

)

V

O

= −0.5V −20 mA

V

O

= VCC + 0.5V +20 mA

DC Output Voltage (V

O

) −0.5V to VCC + 0.5V

DC Output S ource

or Sink Current (I

O

) ±50 mA

DC V

CC

or Ground Current

per Output Pin (I

CC

or I

GND

) ±50 mA

Storage Temperature (T

STG

) −65°C to +150°C

Junction Temperature (T

J

)

PDIP 140°C

Supply Voltage (V

CC

)
AC 2.0V to 6.0V
ACT 4.5V to 5.5V

Input Voltage (V

I

) 0V to V

CC

Output Voltage (VO) 0V to V

CC

Operating Temperature (TA) −40°C to +85°C
Minimum Input Edge Rate (∆V/∆t)

AC Devices
V

IN

from 30% to 70% of V

CC

VCC @ 3.3V, 4.5V, 5.5V 125 mV/ns

Minimum Input Edge Rate (∆V/∆t)

ACT Devices
V

IN

from 0.8V to 2.0V

V

CC

@ 4.5V, 5.5V 125 mV/ns

Symbol Parameter

V

CC

TA = +25°C TA = −40°C to +85°C

Units Conditions

(V) Typ Guaranteed Limits

V

IH

Minimum HIGH Level 3.0 1.5 2.1 2.1 V

OUT

= 0.1V

Input Voltage 4.5 2.25 3.15 3.15 V or VCC − 0.1V

5.5 2.75 3.85 3.85

V

IL

Maximum LOW Level 3.0 1.5 0.9 0.9 V

OUT

= 0.1V

Input Voltage 4.5 2.25 1.35 1.35 V or VCC − 0.1V

5.5 2.75 1.65 1.65

V

OH

Minimum HIGH Level 3.0 2.99 2.9 2.9
Output Voltage 4.5 4.49 4.4 4.4 V I

OUT

= −50 µA

5.5 5.49 5.4 5.4
VIN = V

IL

or V

IH

3.0 2.56 2.46 IOH = −12 mA

4.5 3.86 3.76 V I

OH

= −24 mA

5.5 4.86 4.76 I

OH

= −24 mA(Note 2)

V

OL

Maximum LOW Level 3.0 0.002 0.1 0.1
Output Voltage 4.5 0.001 0.1 0.1 V I

OUT

= 50 µA

5.5 0.001 0.1 0.1
VIN = VIL or V

IH

3.0 0.36 0.44 IOL = 12 mA

4.5 0.36 0.44 V IOL = 24 mA

5.5 0.36 0.44 IOL = 24 mA (Note 2)

I

IN

(Note 4)

Maximum Input
Leakage Current

5.5 ±0.1 ±1.0 µA VI = VCC, GND

I

OLD

Minimum Dynamic 5.5 75 mA V

OLD

= 1.65V Max

I

OHD

Output Current (Note 3) 5.5 −75 mA V

OHD

= 3.85V Min

I

CC

(Note 4)

Maximum Quiescent
Supply Current

5.5 4.0 40.0 µAVIN = VCC or GND