74ACT11643

OCTAL BUS TRANSCEIVER

WITH 3STATE OUTPUTS

SCAS051A − D2957, JULY 1987 − REVISED APRIL 1993

POST OFFICE BOX 655303

4

PARAMETER

TEST CONDITIONS

TYP

UNIT

Cpd

Power dissipation capacitance per transceiver

Outputs enabled

CL = 50 pF,

f = 1 MHz

45

pF

Cpd

Power dissipation capacitance per transceiver

Outputs disabled

CL = 50 pF,

f = 1 MHz

12

pF

PARAMETER MEASUREMENT INFORMATION

From Output

Under Test

CL = 50 pF

(see Note A)

LOAD CIRCUIT

S1

2 X VCC

Open

GND

500

Ω

500

Ω

TEST

tPLH/tPHL

tPLZ/tPZL

tPHZ/tPZH

S1

Open

2 x VCC

GND

tPHL

tPLH

PROPAGATION DELAY TIMES

Output

Control

(Low-level

Enabling)

Output

Waveform 1

S1 at 2 x VCC

(see Note C)

Output

Waveform 2

S1 at GND

(see Note C)

VOL

VOH

tPZL

tPZH

tPLZ

tPHZ

1.5 V

1.5 V

1.5 V

1.5 V

VCC

3 v

0

50%

50%

VOH

VOL

0

50%

20%

50%

80%

VOL

ENABLE AND DISABLE TIMES

VOLTAGE WAVEFORMS

VOLTAGE WAVEFORMS

3 V

Input

(see Note B)

In-Phase

Output

NOTES: A. CL includes probe and jig capacitance.

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

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

C. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.

Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.

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

Figure 1. Load Circuit and Voltage Waveforms