CS8414 Просмотр технического описания (PDF) - Unspecified
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CS8414 Datasheet PDF : 38 Pages
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CS8413 CS8414
DIGITAL CHARACTERISTICS - RS422 RECEIVERS
(RXP, RXN pins only; VD+, VA+ = 5V ± 5%)
Parameters
Symbol Min Typ Max Units
Input Resistance
(-7V < VCM < 7V)
(Note 4) ZIN
-
10
-
kΩ
Differential Input Voltage,
RXP to RXN
(-7V < VCM < 7V) (Notes 4 and 5) VTH
200
-
-
mV
Input Hysteresis
VHYST
-
50
-
mV
Notes: 4. VCM - Input Common Mode Range
5. When the receiver inputs are configured for single ended operation (e.g. consumer configuration) the
signal amplitude must exceed 400 mVp-p for the differential voltage on RXP to RXN to exceed 200 mV.
This represents twice the minimum signal level of 200 mVp-p specified in CP340/1201 and IEC-958
(which are not RS-422 compliant).
SWITCHING CHARACTERISTICS - CS8413 PARALLEL PORT
(TA = 25 °C;VD+, VA+ = 5V ± 5%; Inputs: Logic 0 = DGND, Logic 1 = VD+; CL = 20 pF)
Parameters
Symbol Min Typ Max Units
ADDRESS valid to CS low
CS high to ADDRESS invalid
RD/WR valid to CS low
CS low to RD/WR invalid
CS low
DATA valid to CS rising
CS high to DATA invalid
CS falling to DATA valid
CS rising to DATA Hi-Z
tadcss
13.5
-
-
ns
tcsadh
0
-
-
ns
trwcss
10
-
-
ns
tcsrwi
35
-
-
ns
tcsl
35
-
-
ns
RD/WR low (writing) tdcssw
32
-
-
ns
RD/WR low (writing) tcsdhw
0
-
-
ns
RD/WR high (reading) tcsddr
-
-
35
ns
RD/WR high (reading) tcsdhr
5
-
-
ns
A4 - A0
CS
RD/WR
Writing
D7 - D0
tadcss
t rwcss
t csl
t csrwi
t dcssw
t csadh
t csdhw
RD/WR
Reading
D7 - D0
t csddr
CS8413 Parallel Port timing
t csdhr
4
DS240F1
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