74ACT11238

3-LINE TO 8-LINE DECODER/DEMULTIPLEXER

SCAS054 – NOVEMBER 1988 – REVISED APRIL 1993

POST OFFICE BOX 655303

2–4

PARAMETER

FROM

TO

TA = 25°C

MIN

MAX

UNIT

PARAMETER

(INPUT)

(OUTPUT)

MIN

TYP

MAX

MIN

MAX

UNIT

tPLH

A B or C

Y

1.5

5

8.6

1.5

9.6

ns

tPHL

A, B or C

Y

1.5

5.7

9.7

1.5

10.8

ns

tPLH

G1

Y

1.5

6

8.4

1.5

9.4

ns

tPHL

G1

Y

1.5

6.9

10.2

1.5

11.4

ns

tPLH

G2A G2B

Y

1.5

5.9

9

1.5

10.1

ns

tPHL

G2A, G2B

Y

1.5

7.8

10.7

1.5

12.1

ns

PARAMETER

TEST CONDITIONS

TYP

UNIT

Cpd

Power dissipation capacitance per gate

CL = 50 pF,

f = 1 MHz

57

pF

PARAMETER MEASUREMENT INFORMATION

VOLTAGE WAVEFORMS

LOAD CIRCUIT

Input

(see Note B)

1.5 V

1.5 V

50% VCC

50% VCC

tPHL

tPLH

3 V

Output

VOL

VOH

0 V

From Output

Under Test

CL = 50 pF

(see Note A)

500

Ω

NOTES: A. CL includes probe and jig capacitance.

B. Input pulses are supplied by generators having the following characteristics: PRR

≤ 10 MHz, ZO = 50 Ω, tr = 3 ns, tf = 3 ns.

C. The outputs are measured one at a time with one input transition per measurement.

Figure 1. Load Circuit and Voltage Waveforms