7403 datasheet(9/28 Pages) PHILIPS

9 / 28 page

September 1993

Philips Semiconductors

Product speciﬁcation

4-Bit x 64-word FIFO register; 3-state

74HC/HCT7403

DC CHARACTERISTICS FOR 74HCT

For the DC characteristics see

“74HC/HCT/HCU/HCMOS Logic Family Specifications”, except that VOH and VOL are not

valid for driver output.

They are replaced by the values given below.

Output capability: driver 8 mA.

ICC category: LSI.

Voltages are referenced to GND (ground = 0 V).

DC CHARACTERISTICS FOR 74HCT

Notes to the HCT DC Characteristics

1. The value of additional quiescent supply current (

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

2. To determine

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

UNIT LOAD COEFFICIENT

SYMBOL

PARAMETER

Tamb (°C)

UNIT

TEST CONDITION

+25

−40 to +85 −40 to +125

VCC

(V)

OTHER

MIN

TYP

MAX

MIN

MAX

MIN

MAX

VOH

HIGH level

output voltage

all outputs

4.4

4.5

−

4.4

−

4.4

−

4.5

VIH

VIL

IO = −20 µA

VOH

HIGH level

output voltage

driver outputs

3.98

4.32

−

3.84

−

3.7

−

4.5

VIH

VIL

IO = −8 mA

VOL

LOW level

output voltage

all outputs

−

0.1

−

0.1

−

0.1

4.5

VIH

VIL

IO = 20 µA

VOL

LOW level

output voltage

driver outputs

−

0.15

0.26

−

0.33

−

0.4

4.5

VIH

VIL

IO = 8 mA

INPUT

UNIT LOAD COEFFICIENT

1.5

0.75

1.5

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