54ACT11138, 74ACT11138

3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS

SCAS050A – D3266, JANUARY 1989 – REVISED APRIL 1993

POST OFFICE BOX 655303

2–5

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