Datasheet

MAX3050/MAX3057
±80V Fault-Protected, 2Mbps, Low Supply
Current CAN Transceivers
_______________________________________________________________________________________ 7
LOOPBACK PROPAGATION DELAY vs. R
RS
MAX3050 toc10
R
RS
(kΩ)
LOOPBACK PROPAGATION DELAY (ns)
15010050
200
400
600
800
1000
1200
1400
0
0 200
RECEIVER PROPAGATION DELAY
MAX3050 toc11
40ns/div
RXD
2V/div
CANH - CANL
DRIVER PROPAGATION DELAY
MAX3050 toc13
1µs/div
TXD
5V/div
R
RS
= 24kΩ
R
RS
= 100kΩ
R
RS
= 180kΩ
DRIVER PROPAGATION DELAY
MAX3050 toc12
40ns/div
TXD
2V/div
CANH - CANL
R
RS
= GND
Typical Operating Characteristics (continued)
(V
CC
= 5V, R
L
= 60Ω, C
L
= 100pF, T
A
= +25°C, unless otherwise specified.)
Pin Description
PIN NAME FUNCTION
1 TXD Transmit Data Input. TXD is a CMOS/TTL-compatible input from a CAN controller.
2 GND Ground
3V
CC
Supply Voltage. Bypass V
CC
to GND with a 0.1µF capacitor.
4 RXD Receive Data Output. RXD is a CMOS/TTL-compatible output from the physical bus lines CANH and CANL.
5 SHDN
Shutdown Input. Drive SHDN low to put into shutdown mode (MAX3057). Place a capacitor from SHDN to
ground to utilize the AutoShutdown feature of MAX3050. See the Shutdown and AutoShutdown sections for a
full explanation of SHDN behavior.
6 CANL CAN Bus Line Low. CANL is fault protected to ±80V.
7 CANH CAN Bus Line High. CANH is fault protected to ±80V.
8RS
Mode Select Pin. Drive RS low or connect to GND for high-speed operation. Connect a resistor from RS to
GND to control output slope. Drive RS high to put into standby mode. See the Mode Selection section.