CS8411 CS8412

4

DS61F1

10%)

Notes: 4. VCM - Input Common Mode Range

5. When the receiver inputs are configured for singe ended operation (e.g. consumer configuration) the

signal amplitude must exceed 400m Vp-p for the differential voltage on RXP to RXN to exceed 200mV.

This represents twice the minimum signal level of 200 mVp-p specified in CP340/1201 and IEC-958

(which are not RS-422 compliant).

logic 1 = VD+; CL = 20 pF)

Parameter

Symbol

Min

Typ

Max

Unit

Input Resistance

(-7V < VCM < 7V)

Note 4

10

k

Ω

Differential Input Voltage, RXP to RXN (-7V < VCM < 7V)

Note 4,5

VTH

200

mV

Input Hysteresis

VHYST

50

mV

Parameter

Symbol

Min

Typ

Max

Unit

ADDRESS valid to CS low

13.5

ns

CS high to ADDRESS invalid

0ns

RD/WR valid to CS low

10

ns

CS low to RD/WR invalid

35

ns

CS low

35

ns

DATA valid to CS rising

RD/WR low (writing)

32

ns

CS high to DATA invalid

RD/WR low (writing)

0ns

CS falling to DATA valid

RD/WR high (reading)

35

ns

CS rising to DATA Hi-Z

RD/WR high (reading)

5ns

A4 - A0

D7 - D0

RD/WR

Writing

Reading

adcss

t

csddr

t

csl

t

dcssw

t

csdhw

t

csdhr

t

csadh

t

CS

D7 - D0

RD/WR

csrwi

t

rwcss

t

CS8411 Parallel Port Timing