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±10kV ESD-Protected, Quad 5V RS-485/RS-422 Transmitters

Hot-Swap Capable Inputs Eliminate Erroneous Data Transmission During Circuit Initialization

Product Details

The MAX3040–MAX3045 is a family of 5V quad RS-485/RS-422 transmitters designed for digital data transmission over twisted-pair balanced lines. All transmitter outputs are protected to ±10kV using the Human Body Model. The MAX3040/MAX3043 (250kbps) and the MAX3041/MAX3044 (2.5Mbps) are slew-rate limited transmitters that minimize EMI and reduce reflections caused by improperly terminated cables, thus allowing error-free transmission.

The MAX3040–MAX3045 feature a hot-swap capability that eliminates false transitions on the data cable during power-up or hot insertion. The MAX3042B/MAX3045B are optimized for data transfer rates up to 20Mbps, the MAX3041/MAX3044 for data rates up to 2.5Mbps, and the MAX3040/MAX3043 for data rates up to 250kbps. The MAX3040–MAX3045 offer optimum performance when used with the MAX3093E or MAX3095 5V quad differential line receivers or MAX3094E/MAX3096 3V quad differential line receivers.

The MAX3040–MAX3045 are ESD-protected pin-compatible, low-power upgrades to the industry-standard 'SN75174 and 'DS26LS31C. They are available in space-saving TSSOP, narrow SO, and wide SO packages.

Key Features

  • ESD Protection: ±10kV—Human Body Model
  • Single +5V Operation
  • Guaranteed Device-to-Device Skew (MAX3040/MAX3041/MAX3043/MAX3044)
  • Pin-Compatible with 'SN75174, '26LS31C and LTC487
  • Hot-Swappable for Telecom Applications
  • Up to 20Mbps Data Rate (MAX3042B/MAX3045B)
  • Slew-Rate Limited (Data Rates at 2.5Mbps and 250kbps)
  • 2nA Low-Power Shutdown Mode
  • 1mA Operating Supply Current
  • ±2kV EFT Fast Transient Burst Immunity per IEC 1000-4-4
  • Level 2 Surge Immunity per IEC 1000-4-5, Unshielded Cable Model
  • Ultra-Small 16-Pin TSSOP, 16-Pin Narrow SO, and Wide 16-Pin SO

Applications/Uses

  • Handheld Equipment
  • Industrial Motor Control
  • Industrial PLCs
  • Networking
  • Telecommunications Equipment
  • Transmitter for ESD-Sensitive Applications
Parametric specs for RS-485/RS-422 Transceivers (RS485, RS422 TxRx)
# Tx/Rx 4Tx
VSUPPLY (V) 5
Data Rate (kbps) (min) 250
ICC (mA) (typ) 1
Tx EN Yes
ICC (Shutdn.) (µA) (typ) 0.002
Oper. Temp. (°C) -40 to +85
0 to +70
Package/Pins SOIC (N)/16
SOIC (W)/16
TSSOP/16
Budgetary
Price (See Notes)
$3.18 @1k
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Simplified Block Diagram

MAX3040, MAX3041, MAX3042: Pin Configuration MAX3040, MAX3041, MAX3042: Pin Configuration Zoom icon

Technical Docs

Design & Development

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Support & Training

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Parameters

Parametric specs for RS-485/RS-422 Transceivers (RS485, RS422 TxRx)
# Tx/Rx 4Tx
VSUPPLY (V) 5
Data Rate (kbps) (min) 250
ICC (mA) (typ) 1
Tx EN Yes
ICC (Shutdn.) (µA) (typ) 0.002
Oper. Temp. (°C) -40 to +85
0 to +70
Package/Pins SOIC (N)/16
SOIC (W)/16
TSSOP/16
Budgetary
Price (See Notes)
$3.18 @1k

Key Features

  • ESD Protection: ±10kV—Human Body Model
  • Single +5V Operation
  • Guaranteed Device-to-Device Skew (MAX3040/MAX3041/MAX3043/MAX3044)
  • Pin-Compatible with 'SN75174, '26LS31C and LTC487
  • Hot-Swappable for Telecom Applications
  • Up to 20Mbps Data Rate (MAX3042B/MAX3045B)
  • Slew-Rate Limited (Data Rates at 2.5Mbps and 250kbps)
  • 2nA Low-Power Shutdown Mode
  • 1mA Operating Supply Current
  • ±2kV EFT Fast Transient Burst Immunity per IEC 1000-4-4
  • Level 2 Surge Immunity per IEC 1000-4-5, Unshielded Cable Model
  • Ultra-Small 16-Pin TSSOP, 16-Pin Narrow SO, and Wide 16-Pin SO

Applications/Uses

  • Handheld Equipment
  • Industrial Motor Control
  • Industrial PLCs
  • Networking
  • Telecommunications Equipment
  • Transmitter for ESD-Sensitive Applications

Description

The MAX3040–MAX3045 is a family of 5V quad RS-485/RS-422 transmitters designed for digital data transmission over twisted-pair balanced lines. All transmitter outputs are protected to ±10kV using the Human Body Model. The MAX3040/MAX3043 (250kbps) and the MAX3041/MAX3044 (2.5Mbps) are slew-rate limited transmitters that minimize EMI and reduce reflections caused by improperly terminated cables, thus allowing error-free transmission.

The MAX3040–MAX3045 feature a hot-swap capability that eliminates false transitions on the data cable during power-up or hot insertion. The MAX3042B/MAX3045B are optimized for data transfer rates up to 20Mbps, the MAX3041/MAX3044 for data rates up to 2.5Mbps, and the MAX3040/MAX3043 for data rates up to 250kbps. The MAX3040–MAX3045 offer optimum performance when used with the MAX3093E or MAX3095 5V quad differential line receivers or MAX3094E/MAX3096 3V quad differential line receivers.

The MAX3040–MAX3045 are ESD-protected pin-compatible, low-power upgrades to the industry-standard 'SN75174 and 'DS26LS31C. They are available in space-saving TSSOP, narrow SO, and wide SO packages.

Simplified Block Diagram

MAX3040, MAX3041, MAX3042: Pin Configuration MAX3040, MAX3041, MAX3042: Pin Configuration Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal.