SP3485 datasheet(5/9 Pages) LEIDITECH

5 / 9 page

Transmission characteristics

Unless otherwise specified, V DD = 5V 5% and Tamb = 25 °C

Features slope limiting

Drive input to

Output

tDPLH

RDIFF=54Ω，

CL1=CL2=100pF(2)

Drive input to

Output

tDPHL

RDIFF=54Ω，

CL1=CL2=100pF(2)

|tDPLH-tDPHL|

tDSKEW

RDIFF=54Ω，

CL1=CL2=100pF(2)

Drive up and down

Time

tDR,tDF

RDIFF=54Ω，

CL1=CL2=100pF(2)

Maximum data

transfer rate

fMAX

Mbps

Drive enable delay

tDZH

CL=100pF,S2 CLOSED(3)

Drive enable delay

tDZL

CL=100pF,S1 CLOSED(3)

Drive shutdown

delay

tDLZ

CL=15pF,S1 CLOSED(3)

Drive shutdown

delay

tDHZ

CL=15pF,S2 CLOSED(3)

Receiver input and

output

Delay

tRPLH

| VID|≥2.0V

Rise and fall time ≤ 15ns(4).

250

Receiver input and

output

Delay

tRPHL

250

|tRPLH-tRPHL|

tRSKD

| VID|≥2.0V

Rise and fall time ≤ 15ns(4).

Receiver enable

delay

tRZL

CL=100pF,S1 CLOSED(5)

Receiver enable

delay

tRZH

CL=100pF,S2 CLOSED(5)

Receiver shutdown

delay

tRLZ

CL=100pF,S1 CLOSED(5)

Receiver shutdown

delay

tRHZ

CL=100pF,S2 CLOSED(5)

Shutdown mode

enable time

tSHDN

200

600

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

SP3485

www.leiditech.com

Rev 1.6 :01.01.2022

5/9

Notes：

(1) The test circuit is shown in Figure 1

(2) The test circuit is shown in Figure 2

(3) The test circuit is shown in Figure 3

(4) The test circuit is shown in Figure 4

(5) The test circuit is shown in Figure 5

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