SN74ALVC164245

16BIT 2.5V TO 3.3V/3.3V TO 5V LEVELSHIFTING TRANSCEIVER

WITH 3STATE OUTPUTS

SCAS416L − MARCH 1994 − REVISED FEBRUARY 2004

9

POST OFFICE BOX 655303

PARAMETER MEASUREMENT INFORMATION

tPLH

VOH

VOL

From Output

Under Test

CL = 50 pF

(see Note A)

LOAD CIRCUIT

S1

2

VCCB

Open

GND

500

Ω

500

Ω

tPHL

Output

Control

(low-level

enabling)

Output

Waveform 1

S1 at 2

VCCB

(see Note B)

Output

Waveform 2

S1 at GND

(see Note B)

tPZL

tPZH

tPLZ

tPHZ

1.5 V

1.5 V

1.5 V

1.5 V

2.7 V

0 V

50% VCCB

50% VCCB

VOH

VOL

0 V

20% VCCB

50% VCCB

80% VCCB

0 V

Input

2.7 V

≈VCCB

VOLTAGE WAVEFORMS

PROPAGATION DELAY TIMES

VOLTAGE WAVEFORMS

ENABLE AND DISABLE TIMES

Output

tpd

tPLZ/tPZL

tPHZ/tPZH

Open

2

VCCB

GND

TEST

S1

50% VCCB

NOTES: A. CL includes probe and jig capacitance.

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

≤ 10 MHz, ZO = 50 Ω, tr ≤ 2.5 ns, tf ≤ 2.5 ns.

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

E. tPLZ and tPHZ are the same as tdis.

F. tPZL and tPZH are the same as ten.

G. tPLH and tPHL are the same as tpd.

Figure 3. Load Circuit and Voltage Waveforms