74HC40103 datasheet(8/17 Pages) PHILIPS

8 / 17 page

1998 Jul 08

Philips Semiconductors

Product speciﬁcation

8-bit synchronous binary down counter

74HC/HCT40103

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

CP, PE

1.50

1.00

0.80

0.35

0.25

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

CP to TC

4.5

Fig.7

tPHL/ tPLH

propagation delay

TE to TC

4.5

Fig.8

tPHL/ tPLH

propagation delay

PL to TC

112

4.5

Fig.9

tPHL

propagation delay

MR to TC

4.5

Fig.9

tTHL/ tTLH

output transition time

4.5

Figs. 7 and 8

clock pulse width

HIGH or LOW

4.5

Fig.7

master reset pulse width

LOW

4.5

Fig.9

preset enable pulse width

PL; LOW

4.5

Fig.9

trem

removal time

MR to CP or PL to CP

4.5

Fig.10

tsu

set-up time

PE to CP

4.5

Fig.11

tsu

set-up time

TE to CP

4.5

Fig.11

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