SN54ACT241, SN74ACT241

OCTAL BUFFERS/DRIVERS

WITH 3-STATE OUTPUTS

SCAS516C − JUNE 1995 − REVISED OCTOBER 2002

4

POST OFFICE BOX 655303

switching

characteristics

over

recommended

operating

free-air

temperature

range,

PARAMETER

FROM

TO

SN54ACT241

SN74ACT241

UNIT

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

MIN

TYP

MAX

MIN

MAX

MIN

MAX

UNIT

A

Y

1.5

6

8.5

1

9.5

1.5

9.5

ns

A

Y

1.5

5.5

7.5

1

9

1.5

8.5

ns

OE or OE

Y

1.5

7

8.5

1

10

1

9.5

ns

OE or OE

Y

2

7

9.5

1

11.5

1.5

10.5

ns

OE or OE

Y

2

8

9.5

1

11

2

10.5

ns

OE or OE

Y

2.5

6.5

10

1

11.5

2

10.5

ns

PARAMETER

TEST CONDITIONS

TYP

UNIT

Power dissipation capacitance per buffer/driver

f = 1 MHz

45

pF

PARAMETER MEASUREMENT INFORMATION

From Output

Under Test

(see Note A)

LOAD CIRCUIT

S1

2

500

Ω

500

Ω

Output

Control

(low-level

enabling)

Output

Waveform 1

S1 at 2

(see Note B)

Output

Waveform 2

S1 at Open

(see Note B)

1.5 V

1.5 V

1.5 V

1.5 V

3 V

0 V

0 V

≈0 V

3 V

Open

Input

Output

VOLTAGE WAVEFORMS

VOLTAGE WAVEFORMS

Open

2

Open

TEST

S1

B. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.

Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.

C. All input pulses are supplied by generators having the following characteristics: PRR

D. The outputs are measured one at a time with one input transition per measurement.

Figure 1. Load Circuit and Voltage Waveforms