74HCT7273 查看數據表（PDF） - Philips Electronics

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74HCT7273

Octal D-type flip-flop with reset; positive edge-trigger; open drain outputs

Philips Electronics 

Philips Semiconductors

Octal D-type flip-flop with reset; positive

edge-trigger; open drain outputs

Product specification

74HCT7273

handbook, full pagewidth

VI

CP input

GND

VI

Dn input

GND

VM

t su

th

VM

t su

th

VOH

Qn output

VOL

MNA387

VM = 1.3 V; VI = GND to 3 V.

The shaded areas indicate when the input is permitted to change for predicable output performance.

Fig.8 Data set-up and hold times for the data input (Dn).

handbook, full pagewidth

VI

PULSE

GENERATOR

VCC

VO

D.U.T.

RT

S1

1000 Ω

VCC

open

GND

CL

MNA219

TEST

tPLH/tPHL

tPLZ/tPZL

tPHZ/tPZH

S1

open

VCC

GND

1999 Oct 01

Definitions for test circuit.

CL = load capacitance including jig and probe capacitance (See Chapter “AC characteristics”).

RT = termination resistance should be equal to the output impedance Zo of the pulse generator.

Fig.9 Load circuit for switching times.

11

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