UNIT

PARAMETER

Any Q

Any Q

Any Q

CLK

OC

OC

ns

ns

ns

SN74AS1821

10BIT BUS INTERFACE FLIPFLOPS WITH 3STATE OUTPUTS

SDAS131 − APRIL 1987

POST OFFICE BOX 655303

4

switching characteristics (see Note 1)

VCC = 4.5 V to 5.5 V,

CL = 50 pF,

FROM

TO

R1 = 500

Ω,

(INPUT)

(OUTPUT)

R2 = 500

Ω,

TA = MIN to MAX

MIN

MAX

tPLH

3.5

7.5

tPHL

3.5

10.5

tPZH

4

11

tPZL

4

2

tPHZ

2

8

tPLZ

2

8

NOTE 1: Load circuit and voltage waveforms are shown in Section 1 of the ALS/AS Logic Data Book, 1986.