SN74ALS2240

OCTAL BUFFER AND LINE DRIVER/MOS DRIVER

WITH 3-STATE OUTPUTS

SDAS268A – DECEMBER 1994 – REVISED NOVEMBER 1997

3

POST OFFICE BOX 655303

recommended operating conditions

MIN

NOM

MAX

UNIT

VCC

Supply voltage

4.5

5

5.5

V

VIH

High-level input voltage

2

V

VIL

Low-level input voltage

0.8

V

TA

Operating free-air temperature

0

70

°C

electrical characteristics over recommended operating free-air temperature range (unless

otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP†

MAX

UNIT

VIK

VCC = 4.5 V,

II = – 18 mA

– 1.2

V

VOH

VCC = 4.5 V to 5.5 V,

IOH = – 0.4 mA

VCC –2

V

VOL

VCC =4 5V

IOL = 1 mA

0.15

0.5

V

VOL

VCC = 4.5 V

IOL = 12 mA

0.35

0.8

V

IOZH

VCC = 5.5 V,

VO = 2.7 V

20

µA

IOZL

VCC = 5.5 V,

VO = 0.4 V

–20

µA

II

VCC = 5.5 V,

VI = 7 V

0.1

mA

IIH

VCC = 5.5 V,

VI = 2.7 V

20

µA

IIL

VCC = 5.5 V,

VI = 0.4 V

– 0.1

mA

IO‡

VCC = 5.5 V,

VO = 2.25 V

–30

–112

mA

IOH

VCC = 4.5 V,

–15

mA

IOL

VCC = 4.5 V,

15

mA

Outputs high

6

11

ICC

VCC = 5.5 V

Outputs low

13

23

mA

Outputs disabled

12

20

† All typical values are at VCC = 5 V, TA = 25°C.

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

switching characteristics (see Figure 1)

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

VCC = 4.5 V to 5.5 V,

CL = 50 pF,

R1 = 500

Ω,

R2 = 500

Ω,

TA = MIN to MAX§

UNIT

MIN

MAX

tPLH

A

Y

2

10

ns

tPHL

A

Y

2

10

ns

tPZH

OE

Y

5

17

ns

tPZL

OE

Y

7

20

ns

tPHZ

OE

Y

2

10

ns

tPLZ

OE

Y

4

15

ns

§ For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.