SN54AS821, SN54AS822, SN74AS821, SN74AS822

10-BIT BUS INTERFACE FLIP-FLOPS WITH 3-STATE OUTPUTS

SDAS230 – D2825, DECEMBER 1983 – REVISED JANUARY 1986

POST OFFICE BOX 655303

5

switching characteristics (see Note 1)

VCC = 4.5 V to 5.5 V,

CL = 50 pF,

R1 = 500

Ω,

PARAMETER

FROM

TO

R2 = 500

Ω,

UNIT

PARAMETER

(INPUT)

(OUTPUT)

TA = MIN to MAX†

UNIT

SN54AS821

SN54AS822

SN74AS821

SN74AS822

MIN

MAX

MIN

MAX

tPLH

CLK

Any Q

3.5

9

3.5

7.5

ns

tPHL

CLK

Any Q

3.5

11.5

3.5

10.5

ns

tPZH

OC

Any Q

4

12

4

11

ns

tPZL

OC

Any Q

4

13

4

12

ns

tPHZ

OC

Any Q

2

10

2

8

ns

tPZL

OC

Any Q

2

10

2

8

ns

† For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.

NOTE 1: Load circuit and voltage waveforms are shown in Section 1.