SYMBOL PARAMETER

TEST CONDITIONS

VCC (V)

25°C

-40°C TO 85 °C

-55°C TO 125°C

UNIT

VI (V)

IO (mA)

MIN

MAX

MIN

MAX

MIN

MAX

ΔICC

Additional Supply Current

per Input Pin TTL Inputs

High 1 Unit Load

VCC -2.1

-

4.5 to

5.5

-

2.4

-

2.8

-

3

mA

(1)

Test one output at a time for a 1-second maximum duration. Measurement is made by forcing current and measuring voltage to

minimize power dissipation.

(2)

Test verifies a minimum 50Ω transmission-line-drive capability at 85°C, 75Ω at 125°C.

Table 4-1. ACT Input Load Table

INPUT

UNIT LOAD

A0, B0, A2, B2

1.66

A1, B1

1.9

A3, B3

1.4

CIN

1.1

Note

Unit load is ΔICC limit specified in DC Electrical Specifications Table, e.g., 2.4mA max at 25°C.

CD54AC283, CD74AC283, CD54ACT283, CD74ACT283

SCHS251E – NOVEMBER 1998 – REVISED JANUARY 2025

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