ZT490E ETC1 [List of Unclassifed Manufacturers], ZT490E Datasheet - Page 3

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

Zywyn Corporation
DC Electrical Characteristics
Unless otherwise stated, V
Parameter
TTL Logic Input
TTL Logic Output
RS485 Input
RS485 Output
Power Pin
Temp 0°C to +70°C
Temp –40°C to +85°C
V
Supply Current
I
I
I
I
TTL LOGIC Input
Input Threshold Low
Input Threshold High
TTL LOGIC Output
Output Voltage Low
Output Voltage High
Output Leakage Current
Short Circuit Current
Receiver Input
Input Current
DIfferential Threshold Voltage,V
Input Hysteresis
Input Resistance, R
Transmitter Output
DIfferential Output Voltage, V
DIfferential Output Voltage, dV
Driver Common Mode Output
Change in Voltage Magnitude
for Complimentary States, dV
Change in Voltage Magnitude
for Complimentary States, V
Transmitter Short-Circuit Current
CC
CC
CC
SD
CC
, Shutdown Current
, Tx and Rx active
, Tx active
, Rx active
Voltage Range
Zywyn
IN
OC
OD
OC
OD
CC
TH
= +5.0V, T
DE, DI, RE
Condition
RO
A, B
Y, Z
V
Commercial Grade
Industrial Grade
V
DI=V
DI=V
DI=V
DI=V
V
V
I
I
Receiver Outputs Disabled, V
V
DE = 0V, V
DE = 0V, V
V
V
V
No Load
With R
With R
With R
Differential Output Voltage, with R
Refers to figure 1.
Common-Mode Output Voltage, with R
Refers to figure 2.
Output HIGH, V
Output LOW, V
OUT
OUT
CC
CC
CC
CC
OUT
CM
CM
CM
, V
= +5.0V Supply
= +5.0V Supply, DE, DI, and RE
= +5.0V Supply, DE, DI, and RE
= 0V
= -7V to +12V
CC
CC
CC
CC
= +4mA, Input Differential Voltage = 200mV
= –4mA, Input Differential Voltage = 200mV
= 0V, V
= 0V to V
GND
L
L
L
/GND, DE=V
/GND, DE=V
/GND, DE=GND, RE=GND, RS485 I/P=Open
/GND, DE = GND, RE = V
= 27Ω or 50Ω. C
= 50Ω, C
= 27Ω, C
A
CC
CC
= T
CC
= 0V to 5.25V, V
= 0V to 5.25V, V
min
CC
=+5.0V, T
OUT
OUT
to T
L
L
= -7V to +12V. Refers to figure 7.
= 50pF, Refers to figure 1. (RS422)
= 50pF, Refers to figure 1. (RS485)
= -7V to +12V. Refers to figure 7.
CC
CC
max
, RE=GND, RS485 I/P=Open
, RE=V
, typical values apply at V
A
L
=25
= 50pF. Refers to figure 3.
OUT
IN
CC
o
IN
C
= +12V
, RS485 I/P=Open
= –7V
CC,
= 0.4V to 2.4V
L
= 27Ω or 50Ω, C
RS485 I/P=Open
3
L
= 60Ω,375Ω,375Ω.
CC
= +5.0V and T
L
= 50pF.
A
= 25°C.
Specifications subject to change without notice
4.75
–0.2
Min
High Z
–40
High Z
2.0
3.5
1.5
12
0
7
2
O/P
O/P
+25
+25
400
400
400
Typ
when disabled
5.0
1.0
when disabled
20
Max
5.25
–0.8
+0.2
+70
+85
900
900
900
250
250
0.8
0.4
1.0
0.2
0.2
10
±1
95
5
5
3
August 2004
ZT4xxE
Units
rev.1.2
mA
mA
mA
mV
mA
mA
kΩ
°C
°C
µA
µA
µA
µA
µA
V
V
V
V
V
V
V
V
V
V
V
V