HD75173

Rev.2.00, Jul.16.2004, page 3 of 7

DC Electrical Characteristics

(Ta = 0 to 70°C)

Item

Symbol

Min

Typ *

1

Max

Unit

Conditions

Differential Input High

Threshold Voltage

V

TH

——0.2

V

V

Differential Output Low

Threshold Voltage

V

TL

V

Hysteresis

V

T

T

–

—50

—

mV

Enable Input Voltage

V

IH

2

——V

V

IL

——0.8

Enable Input Clamp Voltage

V

IK

—

—

–1.5

V

II = –18 mA

Output Voltage

V

OH

2.7

——V

V

V

OL

——0.45

V

V

——0.5

V

High Impedance State

V

OZ

—

—

–20

µA

V

Output Current

—

—

+20

V

Line Input Current

I

I

—

—

1

mA

V

—

—

–0.8

V

Enable Input Current

I

IH

——20

µA

V

I

IL

—

—

–100

µA

V

Input Resistance

ri

12

—

—

k

Ω

I

OS

–15

—

–85

mA

Supply Current

I

CC

——70

mA

Notes: 1. All Typical Values are at V

2. The algebraic convention is used in this data sheet for threshold voltage levels only.

3. Not more than one output should be shorted at a time.

4. Refer to EIA standards RS-422A and RS-423A for exact conditions.

Switching Characteristics

(V

Item

Symbol

Min

Typ

Max

Unit

Test Conditions

Propagation Delay Time

t

PLH

—20

35

ns

C

t

PHL

—22

35

Output Enable Time

t

ZH

—17

22

C

t

ZL

—20

25

Output Disable Time

t

HZ

—21

30

C

t

LZ

—30

40