Zywyn Corporation
ZT4xxER
PinDescription
Pin Numbers
Name
Description
ZT487E/ZT485ER
ZT488ER/ZT490ER
ZT489ER/ZT491ER
1
2
2
RO
Receiver Output. If A>B by
200mV, then RO = HIGH; If
A<B by 200mV, then RO =
LOW
2
3
n/a
n/a
3
4
RE
DE
Receiver Output Enable. Low
active input. RO is high-Z when
RE = HIGH
Driver Output Enable. The
transmitter outputs, Y and Z, are
enabled when DE = HIGH.
The outputs are high-Z when
DE = LOW.
4
3
5
DI
Driver Input. A low on DI forces
output Y low and output Z high.
A high on DI will bring output Y
high and output Z low.
5
4
5
6, 7
9
GND
Y
Analog Ground
n/a
Non-inverting transmitter output
n/a
6
6
10
Z
A
Inverting transmitter output
n/a
n/a
Non-inverting transmitter output
and non-inverting receiver
input.
n/a
7
8
12
A
B
Non-inverting receiver
input.
n/a
n/a
Inverting transmitter output
and inverting receiver
input.
n/a
8
7
1
11
14
B
Inverting receiver input
VCC
NC
Power Supply Input, +5V ±5%
n/a
n/a
1, 8, 13
No Connect, Not internally
connected
Specifications subject to change without notice
Zywyn
6
February2005
rev.1.2
ASIX [ ASIX ELECTRONICS CORPORATION ]
