SN75970B

SCSI DIFFERENTIAL CONVERTER-CONTROL

SLLS323A – NOVEMBER 1999 – REVISED JANUARY 2000

14

POST OFFICE BOX 655303

PARAMETER MEASUREMENT INFORMATION

Input

Output

5 V

15 pF

15 pF

165

Ω

165

Ω

75

Ω

A–

B–

B+

Input

Output

0 V

1.5 V

3 V

t0

t0

or

enable

disable

≈ –0.925 V

0.5 V

VOD(H)

ten

tdis

RESET

TEST

DSENS

RSTFLTR

ARST –

ABSY – or ASEL –

CLK20

(see Note A)

ten

tdis

BRST

BBSY or BSEL

NOTE A: These are asynchronous events and do not necessarily align with clock edges.

Figure 6. A-Side to B-Side Enable and Disable Delay Time Test Circuit and Timing Definitions