December 1990

16

Philips Semiconductors

Product specification

8-channel analog multiplexer/demultiplexer

with latch

74HC/HCT4351

TEST CIRCUIT AND WAVEFORMS

Fig.20 Test circuit for measuring AC performance.

Conditions

TEST

SWITCH

others

open

pulse

FAMILY

AMPLITUDE

PULSE WIDTH

OTHER

74HC

50%

< 2 ns

6 ns

74HCT

3.0 V

1.3 V

< 2 ns

6 ns

=

load capacitance including jig and probe capacitance (see AC CHARACTERISTICS for values).

=

Conditions

TEST

SWITCH

others

open

pulse

FAMILY

AMPLITUDE

PULSE WIDTH

OTHER

74HC

50%

< 2 ns

6 ns

74HCT

3.0 V

1.3 V

< 2 ns

6 ns

=

load capacitance including jig and probe capacitance (see AC CHARACTERISTICS for values).

=

Fig.21 Input pulse definitions.