MAX3051ESA MAXIM [Maxim Integrated Products], MAX3051ESA Datasheet

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MAX3051ESA

Manufacturer Part Number
MAX3051ESA
Description
+3.3V, 1Mbps, Low-Supply-Current CAN Transceiver
Manufacturer
MAXIM [Maxim Integrated Products]
Datasheet

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The MAX3051 interfaces between the CAN protocol
controller and the physical wires of the bus lines in a
controller area network (CAN). The MAX3051 provides
differential transmit capability to the bus and differential
receive capability to the CAN controller. The MAX3051
is primarily intended for +3.3V single-supply applica-
tions that do not require the stringent fault protection
specified by the automotive industry (ISO 11898).
The MAX3051 features four different modes of opera-
tion: high-speed, slope-control, standby, and shutdown
mode. High-speed mode allows data rates up to
1Mbps. The slope-control mode can be used to
program the slew rate of the transmitter for data rates of
up to 500kbps. This reduces the effects of EMI, thus
allowing the use of unshielded twisted or parallel cable.
In standby mode, the transmitter is shut off and the
receiver is pulled high, placing the MAX3051 in low-
current mode. In shutdown mode, the transmitter and
receiver are switched off.
The MAX3051 input common-mode range is from -7V to
+12V, exceeding the ISO 11898 specification of -2V to
+7V. These features, and the programmable slew-rate
limiting, make the part ideal for nonautomotive, harsh
environments. The MAX3051 is available in 8-pin SO
and SOT23 packages and operates over the -40°C to
+85°C extended temperature range.
19-3274; Rev 0; 5/04
Typical Operating Circuit at end of data sheet.
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Printers JetLink
Industrial Control and Networks
Telecom Backplane
Consumer Applications
________________________________________________________________ Maxim Integrated Products
General Description
+3.3V, 1Mbps, Low-Supply-Current
Applications
♦ Low +3.3V Single-Supply Operation
♦ Wide -7V to +12V Common-Mode Range
♦ Small SOT23 Package
♦ Four Operating Modes
♦ Thermal Shutdown
♦ Current Limiting
MAX3051ESA
MAX3051EKA-T
High-Speed Operation Up to 1Mbps
Slope-Control Mode to Reduce EMI (Up to 500kbps)
Standby Mode
Low-Current Shutdown Mode
PART
TOP VIEW
GND
RXD
TXD
CAN Transceiver
V
CC
-40°C to +85°C
-40°C to +85°C
1
2
4
TEMP RANGE
3
Ordering Information
SO/SOT23
MAX3051
Pin Configuration
6
8
7
5
PIN-
PACKAGE
8 SO
8 SOT23-8
RS
CANH
CANL
SHDN
Features
MARK
AEKF
TOP
1

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MAX3051ESA Summary of contents

Page 1

... Small SOT23 Package ♦ Four Operating Modes High-Speed Operation Up to 1Mbps Slope-Control Mode to Reduce EMI (Up to 500kbps) Standby Mode Low-Current Shutdown Mode ♦ Thermal Shutdown ♦ Current Limiting PART MAX3051ESA MAX3051EKA-T Applications CAN Transceiver Features Ordering Information PIN- TEMP RANGE PACKAGE -40° ...

Page 2

Low-Supply-Current CAN Transceiver ABSOLUTE MAXIMUM RATINGS V to GND ..............................................................-0.3V to +6V CC TXD, RS, SHDN to GND ...........................................-0.3V to +6V RXD to GND .............................................................-0.3V to +6V CANH, CANL to GND..........................................-7.5V to +12.5V Continuous Power Dissipation (T = ...

Page 3

Low-Supply-Current ELECTRICAL CHARACTERISTICS (continued +3.3V ±5 60Ω 100pF +25°C.) (Note 1) PARAMETER SYMBOL CANH Short-Circuit Current I CANHSC CANL Short-Circuit Current I CANLSC RXD OUTPUT LEVELS RXD High ...

Page 4

Low-Supply-Current CAN Transceiver TIMING CHARACTERISTICS (V = +3.3V ±5 60Ω 100pF +25°C.) PARAMETER SYMBOL Delay TXD to Bus Active t ONTXD (Figure 1) Delay TXD to Bus Inactive t OFFTXD ...

Page 5

Low-Supply-Current TXD ONTXD 0.9V V DIFF t ONRXD RXD Figure 1. Timing Diagram SHDN OFFSHDN V DIFF 0.5V RXD Figure 3. Timing Diagram for Shutdown Signal _______________________________________________________________________________________ ...

Page 6

Low-Supply-Current CAN Transceiver (V = +3.3V 60Ω 100pF SLEW RATE vs 100kbps 100 ...

Page 7

Low-Supply-Current (V = +3.3V 60Ω 100pF RECEIVER OUTPUT HIGH vs. OUTPUT CURRENT 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0 OUTPUT CURRENT ...

Page 8

Low-Supply-Current CAN Transceiver PIN NAME Transmit Data Input. TXD is a CMOS/TTL-compatible input from a CAN controller. TXD has an 1 TXD internal 75kΩ pullup resistor. 2 GND Ground 3 V Supply Voltage. Bypass RXD ...

Page 9

Low-Supply-Current Detailed Description The MAX3051 interfaces between the CAN protocol controller and the physical wires of the bus lines in a CAN. It provides differential transmit capability to the bus and differential receive capability to the CAN con- ...

Page 10

Low-Supply-Current CAN Transceiver is switched off and the receiver is switched to a low- current/low-speed state. If dominant bits are detected, RXD switches to low level. The microcontroller should react to this condition by switching the transceiver back ...

Page 11

Low-Supply-Current MAX3051 CANH TXD R = 120Ω L RXD CANL Figure 6. Multiple Receivers Connected to CAN Bus CAN CONTROLLER TX0 RX0 GND Chip Information TRANSISTOR COUNT: 1024 PROCESS: BiCMOS ______________________________________________________________________________________ CAN Transceiver TWISTED PAIR STUB LENGTH KEEP ...

Page 12

Low-Supply-Current CAN Transceiver (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages TOP VIEW FRONT VIEW 12 ...

Page 13

Low-Supply-Current (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages PIN 1 I.D. DOT (SEE NOTE ...

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