Datasheet

MAX3058/MAX3059
5V, 1Mbps, Low Supply Current
CAN Transceivers
8 _______________________________________________________________________________________
Pin Description
PIN
MAX3058 MAX3059
NAME FUNCTION
1 1 TXD
Transmit Data Input. TXD is a CMOS/TTL-compatible input from a CAN controller. TXD has an
internal 75kΩ pullup resistor.
2 2 GND Ground
33V
CC
Supply Voltage. Bypass V
CC
to GND with a 0.1µF capacitor.
4 4 RXD Receive Data Output. RXD is a CMOS/TTL-compatible output.
5 — SHDN
Shutdown Input, CMOS/TTL-Compatible Input. Drive SHDN high to put the IC into shutdown
mode. SHDN has an internal 75kΩ pulldown resistor to GND.
6 6 CANL CAN Bus Line Low
7 7 CANH CAN Bus Line High
88RS
Mode Select Input. Drive RS low or connect to GND for high-speed operation. Connect a
resistor between RS and GND to control output slope. For the MAX3058, drive RS high to put
into standby mode. (see Mode Selection section). For the MAX3059, drive RS above 0.75 x V
CC
to select shutdown mode.
— 5 TERM
Terminate Input, CMOS/TTL Compatible. Drive TERM high or leave floating to terminate the
device with a 120Ω across the CANH and CANL. Drive TERM low to disconnect this resistor.
TERM has an internal 75kΩ pullup resistor to V
CC
.
MAX3058/
MAX3059
0.75V
THERMAL
SHUTDOWN
TRANSMITTER
CONTROL
MODE
SELECTION
RECEIVER
V
CC
V
CC
RS
RXD
GND
CANL
CANH
TXD
TERM
(MAX3059)
SHUTDOWN
SHDN
(MAX3058)
V
CC
R
T
R
b
R
b
V
CC/2
+
-
Functional Diagram