SN65HVD37_1207 Datasheet, PDF (1/16 Pages) Texas Instruments – Low-Power 3.3V-Supply Full-Duplex RS-485 Driver/Receiver

SN65HVD37
www.ti.com
SLLSE92 A – OCTOBER 2011 – REVISED NOVEMBER 2011
Low-Power 3.3V-Supply Full-Duplex RS-485 Driver/Receiver
Check for Samples: SN65HVD37
FEATURES
1
• Low-Current Standby Mode: <1 μA Typical
• Operational Quiescent Current < 1 mA
• High Receiver Hysteresis for Noise Immunity
(60 mV Typical)
• 1/8 Unit-Load (Up to 256 Nodes on the Bus)
• Bus-pin ESD Protection Exceeds 15 kV HBM
• Driver Output Transition Times Optimized for
Signaling Rate up to 20 Mbps
• Glitch-Free Power-Up and Power-Down
Protection for Hot-Plugging Applications
• 5V-Tolerant Logic Inputs
• Bus Idle, Open, and Short-Circuit Failsafe
• Driver Current Limiting and Thermal Shutdown
• Fully Meets All TIA-485-A Specifications
APPLICATIONS
• Telecommunications Equipment
• Industrial Automation
• Process Automation
• Building Automation
• Point-of-Sale (POS) Terminals
• Improved Replacement for ADM3076,
ADM3491, LTC2852, MAX3491 and SP3491
DESCRIPTION
The SN65HVD37 combines a robust differential driver
and a receiver with high noise immunity for
demanding industrial applications. The driver
differential outputs and the receiver differential inputs
are separate pins, to form a bus port for full-duplex
(four-wire) communications. The driver and receiver
can be independently enabled, and feature a wide
common-mode voltage range, making this device
suitable for multi-point applications over long cable
runs. The SN65HVD37 is characterized over the
temperature range of -40ºC to 85 ºC.
D PACKAGE (TOP VIEW)
NC
1
R
2
RE
3
DE
4
D
5
GND
6
GND
7
14
V_CC
13
V_CC
12
A
11
B
10
Z
9
Y
8
NC
NC - No internal connection
LOGIC DIAGRAM (POSITIVE LOGIC)
4
DE
5
D
RE ³
2
R
9
Y
10
Z
12
A
11
B
Figure 1. 60 mV Receiver Hysteresis for Noise Immunity
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2011, Texas Instruments Incorporated