HD74LS279P データシートの表示（PDF） - Renesas Electronics

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HD74LS279P

Quadruple S-R Latches

Renesas Electronics 

HD74LS279

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

—

—

0.4

V

IOL = 4 mA VCC = 4.75 V, VIH = 2 V,

—

—

0.5

IOL = 8 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

—

3.8

7

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

** ICC is measured with all R inputs grounded, all S inputs at 4.5 V, and all outputs open.

Switching Characteristics

(VCC = 5 V, Ta = 25°C)

Item

Symbol Inputs Output min. typ. max. Unit

Condition

tPLH

S

Propagation delay time

tPHL

tPHL

R

—

12

22

Q

—

13

21

ns CL = 15 pF, RL = 2 kΩ

—

15

27

Note: Refer to Test Circuit and Waveform of the Common Item "TTL Common Matter (Document No.: REJ27D0005-

0100)".

Rev.4.00, May 10, 2006, page 3 of 4

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