SN75970B

SCSI DIFFERENTIAL CONVERTER-CONTROL

SLLS323A – NOVEMBER 1999 – REVISED JANUARY 2000

11

POST OFFICE BOX 655303

PARAMETER MEASUREMENT INFORMATION

td1

td2

Input

Output

0 V

1.5 V

3 V

t0

t0

or

delay

delay

VOD

A–

RESET

TEST

DSENS

RSTFLTR

VOD(L)

0 V

VOD(H)

IO

IO

VOD

VO

VO

B+

B–

A

II

15 pF

15 pF

75

Ω

165

Ω

375

Ω

375

Ω

S1

S2

165

Ω

AB

VI

Input

(see Note A)

GND

5 V

(see Note B)

NOTES: A. The input pulse is supplied by a generator having the following characteristics: tr ≤ 1 ns, tf ≤ 1 ns, PRR ≤ 1 MHz, 45% < duty cycle

< 50%, ZO = 50 Ω.

B. Resistance values are with a tolerance of

±5%.

C. All input voltage levels are held to within 0.01 V.

Figure 3. A-Side to B-Side Propagation Delay Time Test Circuit and Timing Definitions