SN54F240, SN74F240

OCTAL BUFFERS/DRIVERS

WITH 3-STATE OUTPUTS

SDFS061A – D2932, MARCH 1987 – REVISED OCTOBER 1993

2–4

POST OFFICE BOX 655303

switching characteristics (see Note 2)

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

VCC = 5 V,

CL = 50 pF,

RL = 500 Ω,

TA = 25°C

VCC = 4.5 V to 5.5 V,

CL = 50 pF,

RL = 500 Ω,

TA = MIN to MAX†

UNIT

(INPUT)

(OUTPUT)

′F240

SN54F240

SN74F240

MIN

TYP

MAX

MIN

MAX

MIN

MAX

tPLH

Any A

Y

2.2

4.7

7

2.2

9

2.2

8

ns

tPHL

Any A

Y

1.2

3.1

4.7

1.2

6

1.2

5.7

ns

tPZH

OE

Y

1.2

3.1

5.3

1.2

6.7

1.2

6.1

ns

tPZL

OE

Y

3.2

6.5

9

3.2

10.5

3.2

10

ns

tPHZ

OE

Y

1.2

3.6

5.3

1.2

6.5

1.2

6.3

ns

tPLZ

OE

Y

1.2

5.6

8

1.2

12.5

1.2

9.5

ns

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

NOTE 2: Load circuits and waveforms are shown in Section 1.