ZT490E ETC1 [List of Unclassifed Manufacturers], ZT490E Datasheet - Page 4

• Manufacturer Part Number: ZT490E
• Description: Low Power 5V 250kbps/10Mbps RS485 Transceivers
• Manufacturer: ETC1 [List of Unclassifed Manufacturers]

AC Electrical Characteristics (ZT485E, ZT490E, and ZT491E)
Unless otherwise stated, V
Receiver Timing
Transmitter Timing
Zywyn Corporation
Transceiver Throughput
Parameter
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
Zywyn
CC
PLH
PHL
= +5.0V, T
SK
PLH
PHL
SK
R
R
| | | | | t
t
t
To Output HIGH, C
To Output LOW, C
From Output HIGH, C
From Output LOW, C
C
C
| | | | | t
To Output HIGH, C
To Output LOW, C
From Output HIGH, C
From Output LOW, C
R
RS485 Inputs and Outputs
r
r
PLH
PHL
, t
, t
DIFF
DIFF
L
L
L
Condition
A
f
f
= 15pF, Refers to figure 9.
= 15pF, Refers to figure 9.
= 54Ω, C
= T
, R
, R
- t
- t
= 54Ω, C
= 54Ω, C
DIFF
DIFF
min
PHL
PLH
to T
| | | | |
| | | | |
= 54Ω, C
= 54Ω, C
L
= 50pF, T
max
L
L
= 50pF. Refers to figure 4.
= 50pF. Refers to figure 4.
, typical values apply at V
L
L
L
L
= 50pF, R
= 15pF. Refers to figure 11.
= 50pF, R
= 15pF. Refers to figure 10.
L
L
L
L
L
L
= 50pF, ZT490E and ZT491E, refer fig.4.
= 50pF, ZT485E. Refers to figure 4.
= 50pF, R
= 15pF. Refers to figure 11.
= 50pF, R
= 15pF. Refers to figure 10.
A
= 25°C
L
L
= 110Ω. Refers to figure 6.
4
= 110Ω. Refers to figure 5.
L
L
= 110Ω. Refers to figure 6.
= 110Ω. Refers to figure 5.
CC
= +5.0V and T
A
= 25°C.
Specifications subject to change without notice
Min
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 2004
ZT4xxE
Mbps
Units
rev.1.2
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kV