SN65LBC174A

ACTIVE

Quadruple RS-485 Differential Line Drivers

Product details

Number of receivers 0 Number of transmitters 4 Supply voltage (nom) (V) 5 Signaling rate (max) (MBits) 30 Fault protection (V) -10 to 15 Common-mode range (V) -7 to 12 Number of nodes 32 Isolated No Supply current (max) (µA) 23000 Rating Catalog Operating temperature range (°C) -40 to 85
Number of receivers 0 Number of transmitters 4 Supply voltage (nom) (V) 5 Signaling rate (max) (MBits) 30 Fault protection (V) -10 to 15 Common-mode range (V) -7 to 12 Number of nodes 32 Isolated No Supply current (max) (µA) 23000 Rating Catalog Operating temperature range (°C) -40 to 85
PDIP (N) 16 181.42 mm² 19.3 x 9.4 SOIC (DW) 20 131.84 mm² 12.8 x 10.3 SOIC (DW) 16 106.09 mm² 10.3 x 10.3
  • Designed for TIA/EIA-485, TIA/EIA-422 and
    ISO 8482 Applications
  • Signaling Rates(1) up to 30 Mbps
  • Propagation Delay Times < 11 ns
  • Low Standby Power Consumption 1.5-mA Max
  • Output ESD Protection: 12 kV
  • Driver Positive- and Negative-Current Limiting
  • Power-Up and Power-Down Glitch-Free for Line Insertion Applications
  • Thermal Shutdown Protection
  • Industry Standard Pin-Out, Compatible With SN75174, MC3487, DS96174, LTC487, and MAX3042

(1) The signaling rate of a line is the number of voltage transitions that are made per second expressed in the units bps (bits per second).
LinBiCMOS Is a trademark of Texas Instruments.

  • Designed for TIA/EIA-485, TIA/EIA-422 and
    ISO 8482 Applications
  • Signaling Rates(1) up to 30 Mbps
  • Propagation Delay Times < 11 ns
  • Low Standby Power Consumption 1.5-mA Max
  • Output ESD Protection: 12 kV
  • Driver Positive- and Negative-Current Limiting
  • Power-Up and Power-Down Glitch-Free for Line Insertion Applications
  • Thermal Shutdown Protection
  • Industry Standard Pin-Out, Compatible With SN75174, MC3487, DS96174, LTC487, and MAX3042

(1) The signaling rate of a line is the number of voltage transitions that are made per second expressed in the units bps (bits per second).
LinBiCMOS Is a trademark of Texas Instruments.

The SN65LBC174A and SN75LBC174A are quadruple differential line drivers with 3-state outputs, designed for TIA/EIA-485 (RS-485), TIA/EIA-422 (RS-422), and ISO 8482 applications.

These devices are optimized for balanced multipoint bus transmission at signaling rates up to 30 million bits per second. The transmission media may be printed-circuit board traces, backplanes, or cables. The ultimate rate and distance of data transfer is dependent upon the attenuation characteristics of the media and the noise coupling to the environment.

Each driver features current limiting and thermal-shutdown circuitry making it suitable for high-speed multipoint applications in noisy environments. These devices are designed using LinBiCMOS, facilitating low power consumption and robustness.

The two EN inputs provide pair-wise driver enabling, or can be externally tied together to provide enable control of all four drivers with one signal. When disabled or powered off, the driver outputs present a high-impedance to the bus for reduced system loading.

The SN75LBC174A is characterized for operation over the temperature range of 0°C to 70°C. The SN65LBC174A is characterized for operation over the temperature range of –40°C to 85°C.

The SN65LBC174A and SN75LBC174A are quadruple differential line drivers with 3-state outputs, designed for TIA/EIA-485 (RS-485), TIA/EIA-422 (RS-422), and ISO 8482 applications.

These devices are optimized for balanced multipoint bus transmission at signaling rates up to 30 million bits per second. The transmission media may be printed-circuit board traces, backplanes, or cables. The ultimate rate and distance of data transfer is dependent upon the attenuation characteristics of the media and the noise coupling to the environment.

Each driver features current limiting and thermal-shutdown circuitry making it suitable for high-speed multipoint applications in noisy environments. These devices are designed using LinBiCMOS, facilitating low power consumption and robustness.

The two EN inputs provide pair-wise driver enabling, or can be externally tied together to provide enable control of all four drivers with one signal. When disabled or powered off, the driver outputs present a high-impedance to the bus for reduced system loading.

The SN75LBC174A is characterized for operation over the temperature range of 0°C to 70°C. The SN65LBC174A is characterized for operation over the temperature range of –40°C to 85°C.

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* Data sheet Quadruple RS-485 Differential-Line Drivers datasheet (Rev. F) 26 Oct 2009

Design & development

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Simulation model

SN65LBC174A, SN75LBC174A IBIS Model DW PKG

SLLC063.ZIP (4 KB) - IBIS Model
Simulation model

SN65LBC174A, SN75LBC174A IBIS Model N PKG

SLLC062.ZIP (4 KB) - IBIS Model
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PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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Reference designs

TIDA-00766 — Differential Pulse Train Output (PTO) Programmable Logic Controller (PLC) Module Reference Design

The differential pulse-train output (PTO) reference design illustrates the design of a differential high-speed digital output module using a RS-485 driver powered from the PLC backplane using isolated fly-buck power converter. The reference design is mainly used in positioning and motion control (...)
Design guide: PDF
Schematic: PDF
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PDIP (N) 16 View options
SOIC (DW) 20 View options
SOIC (DW) 16 View options

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