HD74LS273FP データシートの表示（PDF） - Renesas Electronics

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HD74LS273FP

Octal D-type Positive-edge-triggered Flip-Flops (with Clear)

Renesas Electronics 

HD74LS273

Electrical Characteristics

(Ta = –20 to +75 °C)

Item

Symbol min. typ.* max. Unit

Condition

Input voltage

VIH

2.0

—

—

V

VIL

—

—

0.8

V

Output voltage

VOH

2.7

—

—

V

VCC = 4.75 V, VIH = 2 V, VIL = 0.8 V,

IOH = –400 µA

VOL

—

—

0.5

V

IOL = 8 mA VCC = 4.75 V, VIH = 2 V,

—

—

0.4

IOL = 4 mA VIL = 0.8 V

IIH

—

20

µA VCC = 5.25 V, VI = 2.7 V

Input current

IIL

—

–0.4

mA VCC = 5.25 V, VI = 0.4 V

II

—

0.1

mA VCC = 5.25 V, VI = 7 V

Short-circuit output current

IOS

–20

—

–100

mA VCC = 5.25 V

Supply current

ICC**

—

17

27

mA VCC = 5.25 V

Input clamp voltage

VIK

—

—

–1.5

V

VCC = 4.75 V, IIN = –18 mA

Notes: * VCC = 5 V, Ta = 25°C

** With all outputs open and 4.5 V applied to all data and clear inputs, ICC is measured after a momentary

ground, then 4.5 V is applied to clock.

Switching Characteristics

(VCC = 5 V, Ta = 25°C)

Item

Symbol

Inputs min.

typ.

max.

Unit

Condition

Maximum clock frequency

ƒmax

Clock

30

40

—

MHz

Propagation delay time

tPHL

tPLH

Clear

—

18

27

—

17

27

ns

CL = 15 pF, RL = 2 kΩ

Clock

tPHL

—

18

27

Testing Method

Test Circuit

P.G.

Zout = 50Ω

Input 4.5V

P.G.

Zout = 50Ω

Input

VCC

Output

RL

D

Q

Clock

Clear

CL

Notes: 1. CL includes probe and jig capacitance.

2. All diodes are 1S2074(H).

Rev.3.00, Jul.15.2005, page 3 of 6

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