SN54BCT244, SN74BCT244

OCTAL BUFFERS/DRIVERS

WITH 3-STATE OUTPUTS

SCBS006E – OCTOBER 1987 – REVISED APRIL 1994

2–4

POST OFFICE BOX 655303

switching characteristics (see Note 2)

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

VCC = 5 V,

CL = 50 pF,

R1 = 500

Ω,

R2 = 500

Ω,

TA = 25°C

VCC = 4.5 V to 5.5 V,

CL = 50 pF,

R1 = 500

Ω,

R2 = 500

Ω,

TA = MIN to MAX†

UNIT

′BCT244

SN54BCT244

SN74BCT244

MIN

TYP

MAX

MIN

MAX

MIN

MAX

tPLH

A

Y

1.2

2.5

4.4

0.9

5.3

0.9

5

ns

tPHL

A

Y

1.7

3.2

5

1.4

6

1.4

5.5

ns

tPZH

OE

Y

2

5.7

7.8

2

9

2

8.7

ns

tPZL

OE

Y

2

5.9

8.1

2

9.4

2

8.9

ns

tPHZ

OE

Y

2

5.4

6.7

2

8

2

7.7

ns

tPLZ

OE

Y

2

6.1

7.6

2

9.8

2

8.9

ns

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

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