74HCSLASHHCT377 datasheet(6/7 Pages) PHILIPS

tên linh kiện	74HC/HCT377

Giải thích chi tiết về linh kiện	Octal D-type flip-flop with data enable; positive-edge trigger

PDF	7 Pages

Scroll/Zoom	100%

nhà sản xuất	PHILIPS [NXP Semiconductors]

Trang chủ	http://www.nxp.com

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6 / 7 page

December 1990

Philips Semiconductors

Product speciﬁcation

Octal D-type ﬂip-ﬂop with data enable;

positive-edge trigger

74HC/HCT377

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 (

∆ICC) 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 =50pF

INPUT

UNIT LOAD COEFFICIENT

1.50

0.50

0.20

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 Qn

4.5

Fig.6

tTHL/ tTLH

output transition time

4.5

Fig.6

clock pulse width

HIGH or LOW

4.5

Fig.6

tsu

set-up time

Dn to CP

4.5

Fig.7

tsu

set-up time

E to CP

4.5

Fig.7

hold time

Dn to CP

−4

4.5

Fig.7

hold time

E to CP

−2

4.5

Fig.7

fmax

maximum clock pulse

frequency

MHz

4.5

Fig.6

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