74HC393D datasheet(6/7 Pages) PHILIPS

6 / 7 page

December 1990

Philips Semiconductors

Product speciﬁcation

Dual 4-bit binary ripple counter

74HC/HCT393

DC CHARACTERISTICS FOR 74HCT

For the DC characteristics see

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

Output capability: standard

ICC category: MSI

Note to HCT types

The value of additional quiescent supply current (

∆I

CC) for a unit 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

1CP

2CP

1MR

2MR

0.4

1.0

SYMBOL PARAMETER

Tamb (°C)

UNIT

TEST CONDITIONS

74HCT

VCC

(V)

WAVEFORMS

+25

−40 to +85 −40 to +125

min.

typ.

max. min. max. min.

max.

tPHL/ tPLH propagation delay

nCP to nQ0

4.5

Fig.7

tPHL/ tPLH propagation delay

nQn to nQn+1

4.5

Fig.7

tPHL

propagation delay

nMR to nQn

4.5

Fig.8

tTHL/ tTLH

output transition time

4.5

Fig.7

clock pulse width

HIGH or LOW

4.5

Fig.7

master reset pulse

width; HIGH

4.5

Fig.8

trem

removal time

nMR to nCP

4.5

Fig.8

fmax

maximum clock pulse

frequency

MHz

4.5

Fig.7

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