54ACT11827, 74ACT11827

10BIT BUFFERS/BUS DRIVERS

WITH 3STATE OUTPUTS

SCAS078 − NOVEMBER 1989 − REVISED APRIL 1993

POST OFFICE BOX 655303

POST OFFICE BOX 1443

2−4

switching characteristics over recommended ranges of supply voltage and operating free-air

temperature (unless otherwise noted) (see Figure 1)

PARAMETER

FROM

TO

TA = 25°C

54ACT11827

74ACT11827

UNIT

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

MIN

TYP

MAX

MIN

MAX

MIN

MAX

UNIT

tPLH

A

Y

3.8

6.3

8

3.8

9.9

3.8

9.2

ns

tPHL

A

Y

2.7

6.9

9.5

2.7

11.9

2.7

11.2

ns

tPZH

G

Y

2.6

6.4

9.2

2.6

12.2

2.6

11.3

ns

tPZL

G

Y

3.2

8

11.2

3.2

15.1

3.2

14

ns

tPHZ

G

Y

6.1

8.8

11.1

6.1

12.9

6.1

12

ns

tPLZ

G

Y

5.8

8.3

10.6

5.8

12.4

5.8

11.6

ns

PARAMETER

TEST CONDITIONS

TYP

UNIT

Cpd

Power dissipation capacitance

Outputs enabled

CL = 50 pF,

f = 1 MHz

35

pF

Cpd

Power dissipation capacitance

Outputs disabled

CL = 50 pF,

f = 1 MHz

10

pF

PARAMETER MEASUREMENT INFORMATION

From Output

Under Test

CL = 50 pF

(see Note A)

LOAD CIRCUIT

S1

2

× VCC

500

Ω

500

Ω

tPLH

tPHL

Output

Control

(low-level

enabling)

Output

Waveform 1

S1 at 2

× VCC

(see Note C)

Output

Waveform 2

S1 at GND

(see Note C)

VOL

VOH

tPZL

tPZH

tPLZ

tPHZ

1.5 V

1.5 V

1.5 V

1.5 V

[ VCC

3 V

0 V

50% VCC

50% VCC

VOH

VOL

0 V

50% VCC

20% VCC

50% VCC

80% VCC

[ 0 V

3 V

GND

Open

Input

(see Note B)

Output

VOLTAGE WAVEFORMS

VOLTAGE WAVEFORMS

tPLH/tPHL

tPLZ/tPZL

tPHZ/tPZH

Open

2

× VCC

GND

TEST

S1

NOTES: A. CL includes probe and jig capacitance.

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

≤ 10 MHz, ZO = 50 Ω, tr = 3 ns, tf = 3 ns.

C. 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.

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

Figure 1. Load Circuit and Voltage Waveforms

PRODUCT PREVIEW information concerns products in the formative or

design phase of development. Characteristic data and other

specifications are design goals. Texas Instruments reserves the right to

change or discontinue these products without notice.