HD74LS48P datasheet(4/7 Pages) RENESAS

Part #	HD74LS48P

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

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Manufacturer	RENESAS [Renesas Technology Corp]

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HD74LS48

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

Electrical Characteristics

(Ta = –20 to +75 °C)

Item

Symbol

min.

typ.*

max.

Unit

Condition

VIH

2.0

—

V

Input voltage

VIL

—

0.8

V

a to g

2.4

—

V

IOH = –100

µA

BI / RBO

VOH

2.4

—

V

IOH = –50

µA

VCC = 4.75 V,

VIH = 2 V, VIL = 0.8 V

—

0.4

IOL = 2 mA

a to g

—

0.5

V

IOL = 6 mA

—

0.4

IOL = 1.6 mA

Output voltage

BI / RBO

VOL

—

0.5

V

IOL = 3.2 mA

VCC = 4.75 V,

VIH = 2 V, VIL = 0.8 V

Output current**

a to g

IO

–1.3

—

mA

VCC = 4.75 V, VO = 0.85 V,

IIH

—

20

µA

VCC = 5.25 V, VI = 2.7 V

except BI

/ RBO

—

–0.4

mA

VCC = 5.25 V, VI = 0.4 V

BI / RBO

IIL

—

–1.2

mA

VCC = 5.25 V, VI = 0.4 V

Input current

except BI

/ RBO

II

—

0.1

mA

VCC = 5.25 V, VI = 7 V

Short-circuit

output current

BI / RBO

IOS

–0.3

—

–2

mA

VCC = 5.25 V

Supply current***

ICC

—

25

38

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

** Input condition as for VOH

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

Switching Characteristics

(VCC = 5 V, Ta = 25°C)

Item

Symbol

Input

min.

typ.

max.

Unit

Condition

tPHL

—

100

Turn-on time

tPLH

A

—

100

ns

CL = 15 pF, RL = 4 k

Ω

tPHL

—

100

Turn-off time

tPLH

RBI

—

100

ns

CL = 15 pF, RL = 6 k

Ω

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