HCT652 datasheet(7/10 Pages) PHILIPS

7 / 10 page

September 1993

Philips Semiconductors

Product speciﬁcation

Octal bus transceiver/register; 3-state

74HC/HCT652

DC CHARACTERISTICS FOR 74HCT

For the DC characteristics see

“74HC/HCT/HCU/HCMOS Logic Family Specifications”.

Output capability: bus driver

ICC category: MSI.

Note to the HCT types

The value of additional quiescent supply current (

∆ICC) for unit a load of 1 is given in the family specifications.

To determine

∆ICC per input, multiply this value by the unit load coefficient shown in the table below

AC CHARACTERISTICS FOR 74HCT

GND = 0 V; tr =tf = 6 ns; CL = 50 pF.

INPUT

UNIT LOAD COEFFICIENT

SAB, SBA

0.75

A0 to A7 and B0 to B7

0.75

CPAB, CPBA

1.50

OEAB

1.50

OEBA

1.50

INPUT

PARAMETER

Tamb (°C)

UNIT

TEST CONDITIONS

+25

−40 to +85

−40 to +125

VCC

(V)

WAVEFORMS

MIN. TYP. MAX.

MIN. MAX. MIN.

MAX.

tPHL/tPLH

propagation delay

An, Bn to Bn, An

−

4.5

Fig.6

tPHL/tPLH

propagation delay

CPAB, CPBA to Bn, An

−

4.5

Fig.7

tPHL/tPLH

propagation delay

SAB, SBA to Bn, An

−

4.5

Fig.8

tPZH/tPZL

3-state output enable

time

OEAB, OEBA to An, Bn

−

4.5

Fig.9

tPHZ/tPLZ

3-state output disable

time

OEAB, OEBA to An, Bn

−

4.5

Fig.9

tTHL/tTLH

output transition time

−

512

−

4.5

Fig.6, 8

clock pulse width

HIGH or LOW

CPAB or CPBA

−

4.5

Fig.7

tsu

set-up time

An, Bn to CPAB, CPBA

−

4.5

Fig.7

hold time

An, Bn to CPAB, CPBA

−2

−

4.5

Fig.7

fmax

maximum clock pulse

frequency

−

MHz

4.5

Fig.7

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