74253 IC Dual 4-input multiplexer 3-state

Description:

Each of these Schottky-clamped data selectors/multiplexers contains inverters and drivers to supply fully complementary, on-chip, binary decoding data selection to the

AND-OR gates. Separate output control inputs are provided for each of the two four-line sections. The 3-STATE outputs can interface directly with data lines of bus-organized systems. With all but one of the common outputs disabled (at a high impedance state), the low impedance of the single enabled output will drive the bus line to a HIGH or LOW logic level.

Features:

3-STATE version of DM74LS153 with same pinout

Schottky-diode-clamped transistors

Permit multiplexing from N-lines to one line

Performs parallel-to-serial conversion

Strobe/output control

High fanout totem-pole outputs

Typical propagation delay

Data to output 12 ns

Select to output 21 ns

Typical power dissipation 35 mW

Recommended Operating Conditions:

Symbol

Parameter

Min

Nom

Max

Units

VCC

Supply Voltage

4.75

5

5.25

V

VIH

HIGH Level Input Voltage

2

V

V
IL

LOW Level Input Voltage

0.8

V

IOH

HIGH Level Output Current

2.6

mA

IOL

LOW Level Output Current

24

mA

T
A

Free Air Operating Temperature

0

70

C

Electrical Characteristics

over recommended operating free air temperature range (unless otherwise noted)

Symbol

Parameter

Conditions

Min

Typ

Max

Units

V
I

Input Clamp Voltage

V
CC
= Min, I
I
= 18 mA

1.5

V

VOH

HIGH Level

Output Voltage

V
CC
= Min, I
OH
= Max

V
IL
= Max, V
IH
= Min

2.4

3.1

V

VOL

LOW Level

Output Voltage

V
CC
= Min, I
OL
= Max

V
IL
= Max, V
IH
= Min

0.5

V

I
OL
= 12 mA, V
CC
= Min

0.4

I
I

Input Current @ Max Input Voltage

V
CC
= Max, V
I
= 7V

0.1

mA

IIH

HIGH Level Input Current

V
CC
= Max, V
I
= 2.7V

20

A

IIL

LOW Level Input Current

V
CC
= Max, V
I
= 0.4V

0.4

mA

IOZH

Off-State Output Current with

HIGH Level Output Voltage Applied

V
CC
= Max, V
O
= 2.7V

V
IH
= Min, V
IL
= Max

20

A

IOZL

Off-State Output Current with

LOW Level Output Voltage Applied

V
CC
= Max, V
O
= 0.4

V
IH
= Min, V
IL
= Max

20

A

IOS

Short Circuit Output Current

V
CC
= Max (Note 3)

20

100

mA

ICC1

Supply Current

V
CC
= Max (Note 4)

7

12

mA

ICC2

Supply Current

V
CC
= Max (Note 5)

8.5

14

mA

IC Dimensions:

Datasheet