74ACT8244 datasheet(3/7 Pages) STMICROELECTRONICS

3 / 7 page

74ACT8244

3/7

DC SPECIFICATIONS

AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, RL = 500 Ω, Input tr = tf = 3ns)

TRUTH TABLE FOR LATCHING RELAY

DRIVER

Z : High Impedance

X : Don’t Care

n : 1,2,3

TRUTH TABLE FOR SINGLE SIDE RELAY

TRUTH TABLE FOR LED DRIVER

Symbol

Parameter

Test Condition

Value

Unit

Min.

Typ.

Max.

VIH

High Level Input Voltage

VO = 0.1 V or VCC-0.1V

2.0

1.4

VIL

Low Level Input Voltage

VO = 0.1 V or VCC-0.1V

1.4

0.8

VOH

High Level Output Voltage

for Single Driver

IO=-35mA

VCC-0.68 VCC-0.3

VOL

Low Level Output Voltage for

Single Driver

IO=35mA

0.25

0.68

VOH

High Level Output Voltage

for Double Relay Driver

IO=-70mA

VCC-0.68 VCC-0.3

VOL

Low Level Output Voltage for

Double Relay Driver

IO=70mA

0.25

0.68

VOH

High Level Output Voltage

for Single Side Relay of LED

IO=-50mA

VCC-0.8

VCC-0.4

VOL

Low Level Output Voltage for

Single Side Relay of LED

IO=50mA

0.3

0.8

Input Leakage Current

VI = VCC or GND

± 0.1

µA

ICCT

Max ICC/Input

VI = VCC - 2.1V

0.6

1.5

ICC

Quiescent Supply Current

VI = VCC or GND

µA

Symbol

Parameter

Test Condition

Value

Unit

Min.

Typ.

Max.

tPLH tPHL

Propagation Delay Time

Over recommended operating

conditions

7.0

11.0

INPUT

OUTPUT

Condition

RST

INnA

INnB

OUnA OUnB

Storage

LLLLL

Storage

LHLH

Operate

LHLHL

Release

HHHH

Storage

INPUT

OUTPUT

IN4

OUT4

INPUT

OUTPUT

IN5

OUT5

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