zt490leep ywyn Corporation, zt490leep Datasheet - Page 4

• Manufacturer Part Number: zt490leep
• Description: Low Power 5v 250kbps/10mbps Rs485e Transceivers
• Manufacturer: ywyn Corporation

AC Electrical Characteristics (ZT485E, ZT490E, and ZT491E)
Unless otherwise stated, V
Parameter
Transmitter Timing
Receiver Timing
Zywyn Corporation
Transceiver Throughput
Transmitter Propagation t
Transmitter Propagation t
Transmitter Output Skew t
Transmitter Rise/Fall Time
Transmitter Output Enable
Transmitter Output Disable
Receiver Propagation t
Receiver Propagation t
Differential Receiver Skew t
Receiver Output Enable
Receiver Output Disable
Maximum Data Rate
ESD Tolerance
ESD HBM
Z ywyn
PLH
PHL
CC
PLH
PHL
SK
SK
= +5.0V, T
R
R
|tPLH - tPHL|
t
t
To Output HIGH, C
To Output LOW, C
From Output HIGH, C
From Output LOW, C
C
C
|tPHL - tPLH|
To Output HIGH, C
To Output LOW, C
From Output HIGH, C
From Output LOW, C
R
RS-485 Inputs and Outputs
R
R
DIFF
DIFF
L
L
L
Condition
, t
, t
= 15pF, Refers to fi gure 9.
= 15pF, Refers to fi gure 9.
= 54Ω, C
f
f
, R
, R
A
= 54Ω, C
= 54Ω, C
= T
DIFF
DIFF
min
L
= 54Ω, C
= 54Ω, C
= 50pF, One Transmitter Switching, T
to T
L
L
= 50pF, Refers to fi gure 4.
= 50pF, Refers to fi gure 4.
max
L
L
L
L
= 15pF, Refers to fi gure 11.
= 50pF, R
= 50pF, R
= 15pF, Refers to fi gure 10.
L
L
, typical values apply at V
L
L
L
L
= 50pF, R
= 15pF, Refers to fi gure 11.
= 50pF, R
= 15pF, Refers to fi gure 10.
= 50pF, ZT485E. Refers to fi gure 4.
= 50pF, ZT490E and ZT491E, refer fi g.4.
L
L
= 110W. Refers to fi gure 5.
= 110W. Refers to fi gure 6.
4
L
L
= 110W. Refers to fi gure 6.
= 110W. Refers to fi gure 5.
CC
= +5.0V and T
A
= 25°C
Specifi cations subject to change without notice
A
Min
= 25°C.
10
Typ
±15
35
35
15
15
50
50
50
50
50
50
10
50
50
50
50
3
Max
150
150
60
60
10
25
25
August 2007
ZT4xxE
Units
Mbps
rev. 1.5
kV
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns