SN54ALS165, SN74ALS165

PARALLEL-LOAD 8-BIT REGISTERS

SDAS157B – JUNE 1982 – REVISED DECEMBER 1994

6

POST OFFICE BOX 655303

PARAMETER MEASUREMENT INFORMATION

3.5 V

3.5 V

0.3 V

0.3 V

3.5 V

0.3 V

tn

tsu3

tsu4

tsu3

CLK

SER

Vref

SH/LD

Vref

Vref

Vref

NOTES: A. The eight data inputs and CLK INH are low. Results are monitored at QH at tn + 7.

B. The input pulse generators have the following characteristics: PRR

≤ 1 MHz, duty cycle = 50%, tr = tf = 2 ns.

C. Vref = 1.3 V

Figure 2. Voltage Waveforms

Test

Point

RL

From Output

Under Test

CL

(see Note A)

NOTE A: CL includes probe and jig capacitance.

Figure 3. Load Circuit for Switching Tests