±1 5 k V ES D-P ro t e c t e d , S le w -Ra t e -Lim it e d ,
Lo w -P o w e r, RS -4 8 5 /RS -4 2 2 Tra n s c e ive rs
335–9/MAX1487E5–9/MAX1487E
______________________________________________________________P in De s c rip t io n
PIN
MAX481E/MAX483E
MAX485E/MAX487E
MAX1487E
NAME
FUNCTION
MAX488E
MAX490E
MAX489E
MAX491E
Receiver Output: If A > B by 200mV, RO will be high;
If A < B by 200mV, RO will be low.
1
2
2
2
3
RO
–—–
Receiver Output Enable. RO is enabled when RE is
–—–
–—–
RE
—
low; RO is high impedance when RE is high.
Driver Output Enable. The driver outputs, Y and Z, are
enabled by bringing DE high. They are high imped-
ance when DE is low. If the driver outputs are enabled,
3
4
—
4
DE
the parts function as line drivers. While they are high
–—–
impedance, they function as line receivers if RE is low.
Driver Input. A low on DI forces output Y low and out-
put Z high. Similarly, a high on DI forces output Y high
and output Z low.
3
5
DI
5
4
5
6
6, 7
9
GND
Y
Ground
—
—
Noninverting Driver Output
Inverting Driver Output
10
Z
Noninverting Receiver Input and Noninverting Driver
Output
6
—
—
A
—
7
8
—
7
12
—
A
B
B
Noninverting Receiver Input
Inverting Receiver Input and Inverting Driver Output
Inverting Receiver Input
—
8
11
1
14
V
CC
Positive Supply: 4.75V ≤ V ≤ 5.25V
CC
—
—
1, 8, 13
N.C.
No Connect—not internally connected
_______________________________________________________________________________________
7
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
