74ALS258 查看數據表（PDF） - Philips Electronics

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74ALS258

Data selector/multiplexer

Philips Electronics 

Philips Semiconductors

Data selector/multiplexer

Product specification

74ALS257/74ALS258

DC ELECTRICAL CHARACTERISTICS

(Over recommended operating free-air temperature range unless otherwise noted.)

SYMBOL

PARAMETER

TEST CONDITIONS1

LIMITS

MIN TYP2 MAX

UNIT

VOH

High-level output voltage

VOL

VIK

II

IIH

IIL

IOZH

Low-level output voltage

Input clamp voltage

Input current at maximum input voltage

High-level input current

Low-level input current

Off-state output current,

High-level voltage applied

VCC = ±10%, VIL = MAX, IOH = –0.4mA VCC – 2

V

VIH = MIN

IOH = MAX

2.4

3.2

V

VCC = MIN, VIL = MAX,

VIH = MIN

IOL = 12mA

IOL = 24mA

0.25 0.40

V

0.35 0.50

V

VCC = MIN, II = IIK

–0.73 –1.5

V

VCC = MAX, VI = 7.0V

0.1

mA

VCC = MAX, VI = 2.7V

20

µA

VCC = MAX, VI = 0.4V

–0.1

mA

VCC = MAX, VI = 2.7V

20

µA

IOZL

Off-state output current,

Low-level voltage applied

VCC = MAX, VI = 0.4V

–20

µA

IO

Output current3

VCC = MAX, VO = 2.25V

–30

–112

mA

ICCH

3

6

mA

74ALS257 ICCL VCC = MAX

8

12

mA

ICC

Supply current (total)

ICCZ

ICCH

9

14

mA

2.5

4

mA

74ALS258 ICCL VCC = MAX

7

11

mA

ICCZ

9

13

mA

NOTES:

1. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable type.

2. All typical values are at VCC = 5V, Tamb = 25°C.

3. The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.

1991 Feb 08

5

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