HD74LS48 查看數據表（PDF） - Renesas Electronics

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HD74LS48

BCD-to-Seven-Segment Decoder / Driver (Internal Pull-up outputs)

Renesas Electronics 

HD74LS48

Electrical Characteristics

Item

Symbol min. typ.* max.

Input voltage

VIH

2.0

—

—

VIL

—

—

0.8

a to g

2.4

—

—

BI / RBO

VOH

2.4

—

—

Output voltage a to g

VOL

BI / RBO

—

—

0.4

—

—

0.5

—

—

0.4

—

—

0.5

Output current** a to g

IO

–1.3

—

—

except BI

IIH

/ RBO

Input current

BI / RBO

IIL

—

—

20

—

—

–0.4

—

—

–1.2

except BI

/ RBO

II

—

—

0.1

Short-circuit

output current BI / RBO

IOS

–0.3

—

–2

Supply current***

ICC

—

25

38

Input clamp voltage

VIK

Notes: * VCC = 5 V, Ta = 25°C

—

—

–1.5

** Input condition as for VOH

*** ICC is measured with all outputs open and inputs at 4.5 V.

Unit

V

V

V

V

V

V

mA

µA

mA

mA

mA

(Ta = –20 to +75 °C)

Condition

IOH = –100 µA VCC = 4.75 V,

IOH = –50 µA VIH = 2 V, VIL = 0.8 V

IOL = 2 mA

IOL = 6 mA

VCC = 4.75 V,

IOL = 1.6 mA VIH = 2 V, VIL = 0.8 V

IOL = 3.2 mA

VCC = 4.75 V, VO = 0.85 V,

VCC = 5.25 V, VI = 2.7 V

VCC = 5.25 V, VI = 0.4 V

VCC = 5.25 V, VI = 0.4 V

VCC = 5.25 V, VI = 7 V

mA VCC = 5.25 V

mA VCC = 5.25 V

V VCC = 4.75 V, IIN = –18 mA

Switching Characteristics

Item

Turn-on time

Turn-off time

(VCC = 5 V, Ta = 25°C)

Symbol Input min.

typ.

max.

Unit

Condition

tPHL

tPLH

A

—

—

—

100

—

100

ns

CL = 15 pF, RL = 4 kΩ

tPHL

RBI

—

tPLH

—

—

100

—

100

ns

CL = 15 pF, RL = 6 kΩ

Rev.3.00, Jul.22.2005, page 4 of 6

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