ISL81487 Intersil Corporation, ISL81487 Datasheet - Page 2

• Manufacturer Part Number: ISL81487
• Description: 1/8 Unit Load, 5v, Low Power, High Speed or Slew Rate Limited, Rs-485/rs-422 Transceivers
• Manufacturer: Intersil Corporation

Pinout
Ordering Information
NOTE: SOIC also available in Tape and Reel; Add “-T” to suffix.
Pin Descriptions
ISL8487IB
(8487IB)
ISL8487IP
ISL81483IB
(81483IB)
ISL81483IP
ISL81487IB
(81487IB)
ISL81487IP
PART NO.
(BRAND)
GND
V
PIN
A/Y
B/Z
RO
RE
DE
DI
CC
ISL8487, ISL81483, ISL81487 (PDIP, SOIC)
Receiver output: If A > B by at least 0.2V, RO is high; If A < B by 0.2V or more, RO is low; RO = High if A and B are unconnected (floating).
Receiver output enable. RO is enabled when RE is 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 impedance when DE is low.
Driver input. A low on DI forces output Y low and output Z high. Similarly, a high on DI forces output Y high and output Z low.
Ground connection.
RS-485/422 level, noninverting receiver input and noninverting driver output. Pin is an input (A) if DE = 0; pin is an output (Y) if DE = 1.
RS-485/422 level, inverting receiver input and inverting driver output. Pin is an input (B) if DE = 0; pin is an output (Z) if DE = 1.
System power supply input (4.5V to 5.5V).
RANGE (
RO
RE
DE
DI
-40 to 85
-40 to 85
-40 to 85
-40 to 85
-40 to 85
-40 to 85
TEMP.
1
2
3
4
TOP VIEW
o
C)
R
D
8 Ld SOIC
8 Ld PDIP
8 Ld SOIC
8 Ld PDIP
8 Ld SOIC
8 Ld PDIP
2
PACKAGE
8
7
6
5
V
B/Z
A/Y
GND
CC
ISL8487, ISL81483, ISL81487
PKG. DWG. #
M8.15
E8.3
M8.15
E8.3
M8.15
E8.3
FUNCTION
Truth Tables
*Shutdown Mode for ISL8487, ISL81483 (see Note 7)
*Shutdown Mode for ISL8487, ISL81483 (see Note 7)
RE
X
X
0
1
RE
0
0
0
1
1
INPUTS
DE
1
1
0
0
INPUTS
DE
0
0
0
0
1
TRANSMITTING
RECEIVING
DI
X
X
1
0
Inputs Open
≥ +0.2V
≤ -0.2V
A-B
X
X
High-Z *
High-Z
Z
0
1
OUTPUTS
OUTPUT
High-Z *
High-Z
High-Z *
High-Z
RO
1
0
1
Y
1
0