SN74ALS819, SN74ALS29818

8BIT DIAGNOSTICS/PIPELINE REGISTERS

SDAS105A − JANUARY 1986 − REVISED OCTOBER 1986

POST OFFICE BOX 655303

POST OFFICE BOX 1443

11

PARAMETER MEASUREMENT INFORMATION

LOAD CIRCUIT FOR

BI-STATE

TOTEM-POLE OUTPUTS

VOLTAGE WAVEFORMS

SETUP AND HOLD TIMES

VOLTAGE WAVEFORMS

PROPAGATION DELAY TIMES

LOAD CIRCUIT FOR

3-STATE OUTPUTS

SWITCH POSITION TABLE

VOLTAGE WAVEFORMS

PULSE DURATIONS

VOLTAGE WAVEFORMS

ENABLE AND DISABLE TIMES, 3-STATE OUTPUTS

Closed

Closed

Closed

Closed

Closed

Closed

Closed

Closed

Closed

Closed

Open

Open

S1

S2

TEST

tPLH

tPHL

tPZH

tPZL

tPHZ

tPLZ

S1

R1

CL

(see Note A)

R2

All Diodes

1N916 of 1N3064

S2

Test Point

VCC

From Output

Under Test

CL

(see Note A)

VCC

From Output

Under Test

RL

tsu

3 V

0 V

1.5 V

th

1.5 V

1.5 V

3 V

0 V

Timing

Input

Data

Input

tPLH

tPHL

tPHL

tPLH

VOH

VOH

VOL

VOL

1.5 V

1.5 V

3 V

0 V

Input

Out-of-Phase

Output

In-Phase

Output

1.5 V

1.5 V

1.5 V

1.5 V

3 V

0 V

3 V

0 V

1.5 V

1.5 V

1.5 V

1.5 V

tw

High-Level

Input

Low-Level

Input

1.5 V

1.5 V

3 V

0 V

VOL

VOH

≈ 0 V

tPLZ

tPZL

1.5 V

4.5 V

1.5 V

tPZH

tPHZ

0.5 V

0.5 V

≈ 1.5 V

1.5 V

Output

Control

Waveform 1

(see Note B)

Waveform 2

(see Note B)

NOTES: A. CL includes probe and jig capacitance.

B. 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.

C. 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.

Figure 1