4-354

AC Test Load Circuits

BUSY, CBRQ LOAD CIRCUIT

AEN LOAD CIRCUIT

BPRO, BREQ LOAD CIRCUIT

NOTE: Includes Stray and Jig Capacitance

AC Testing Input, Output Waveform

ing measurements are made at 1.5V for both a logic “1” and “0”.

TEST

POINT

100pF

102

Ω

OUTPUT FROM

DEVICE

UNDER TEST

2.5V

(NOTE)

TEST

POINT

2.9V

100pF

OUTPUT FROM

DEVICE

UNDER TEST

157.2

Ω

(NOTE)

TEST

POINT

2.9V

100pF

OUTPUT FROM

DEVICE

UNDER TEST

249.6

Ω

(NOTE)

1.5V

1.5V

INPUT

OUTPUT

82C89