SN54ABT16373, SN74ABT16373

16-BIT TRANSPARENT D-TYPE LATCHES

WITH 3-STATE OUTPUTS

SCBS469 - FEBRUARY 1991 - REVISED OCTOBER 1992

POST OFFICE BOX 655303

POST OFFICE BOX 1443

77251–1443

6

PARAMETER MEASUREMENT INFORMATION

1.5 V

th

tsu

From Output

Under Test

CL = 50 pF

LOAD CIRCUIT FOR OUTPUTS

S1

7 V

Open

GND

500

Ω

500

Ω

Data Input

Timing Input

1.5 V

3 V

0 V

1.5 V

1.5 V

3 V

0 V

3 V

0 V

1.5 V

1.5 V

tw

Input

(see Note A)

VOLTAGE WAVEFORMS

SETUP AND HOLD TIMES

VOLTAGE WAVEFORMS

PROPAGATION DELAY TIMES

INVERTING AND NONINVERTING OUTPUTS

VOLTAGE WAVEFORMS

PULSE DURATION

tPLH

tPHL

tPHL

tPLH

VOH

VOH

VOL

VOL

1.5 V

1.5 V

3 V

0 V

1.5 V

1.5 V

Input

(see Note B)

1.5 V

Output

Control

Output

Waveform 1

S1 at 7 V

(see Note C)

Output

Waveform 2

S1 at Open

(see Note C)

VOL

VOH

tPZL

tPZH

tPLZ

tPHZ

1.5 V

1.5 V

3.5 V

0 V

1.5 V

VOL + 0.3 V

1.5 V

VOH – 0.3 V

[ 0 V

3 V

VOLTAGE WAVEFORMS

ENABLE AND DISABLE TIMES

LOW- AND HIGH-LEVEL ENABLING

Output

Output

tPLH/tPHL

tPLZ/tPZL

tPHZ/tPZH

Open

7 V

Open

TEST

S1

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 ≤ 2.5 ns, tf ≤ 2.5 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