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Home > Products > Integrated Circuits (ICs) > Interface > Drivers, Receivers, Transceivers

STMicroelectronics STLVDS31BTR

Name: STLVDS31BTR
Brand: STMicroelectronics
SKU: STLVDS31BTR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STLVDS31BTR

Manufacturer:: STMicroelectronics

Category:: Drivers, Receivers, Transceivers

Package:: 16-TSSOP (0.173", 4.40mm Width)

Datasheet:: STLVDS31BTR.pdf

Description:: IC TRANSCEIVER 4/0 16TSSOP

Quantity:: RFQ Add To RFQ list

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Inventory:1,398

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Product details

Overview

STLVDS31BTR from STMicroelectronics is a quad high-speed LVDS line driver IC implementing ANSI TIA/EIA-644-compliant differential signaling, operating from a single 3.3 V supply with 247 mV min differential output into 100 Ω, 1.7 ns typical propagation delay, and −40 °C to +85 °C temperature range for point-to-point baseband data transmission over PCB traces or backplanes.

For engineers reviewing the STLVDS31BTR datasheet, STLVDS31BTR pinout, STLVDS31BTR application, or STLVDS31BTR equivalent, key selection considerations include differential output voltage stability under load, channel-to-channel skew (≤0.3 ns), enable/disable timing behavior, and compatibility with legacy AM26LS31/SN65LVDS31 interfaces in industrial backplane and FPGA interconnect designs.

Technical Context

The STLVDS31BTR integrates four independent current-mode LVDS drivers with TTL-compatible LVTTL inputs and high-impedance disable control. Each driver delivers a defined differential swing (247–454 mV) and tightly controlled common-mode voltage (1.125–1.375 V) under 100 Ω termination.

Its logic enables/disables all drivers simultaneously via dual enable pins (Pin 4 and Pin 12), supporting hot-swap and power-gating use cases. Propagation delay matching (channel skew ≤0.3 ns) and fast edge rates (0.4–0.6 ns rise/fall) support reliable 400 Mbps operation in noise-sensitive, impedance-controlled environments.

Key Specifications

Parameter	Value and Actual Design Meaning
V_OD (min)	247 mV into 100 Ω - ensures receiver VID threshold margin across process/temperature/voltage
t_PLH/t_PHL	0.5–2.5 ns - supports ≤400 Mbps NRZ data without intersymbol interference
t_sk(O)	0–0.3 ns - guarantees simultaneous assertion of multi-lane parallel signals
V_CC Range	3.0–3.6 V - compatible with standard 3.3 V LVTTL I/O domains and rail-tolerant systems
I_CC (enabled, loaded)	25–35 mA - enables thermal design for 4-driver operation at full rate in TSSOP16
Operating Temp	−40 °C to +85 °C - qualified for industrial-grade embedded and communications equipment
Enable/Disable Delay	t_PZH = 5.4–15 ns - defines minimum guard band for synchronized power sequencing

Pinout & Package

TSSOP16 package: 4.9 × 6.4 mm body, 0.65 mm pitch, 16-pin thin shrink small outline package with exposed pad not present; RoHS-compliant ECOPACK® grade.

Pin/Terminal	Circuit Role	Design Meaning
1, 7, 9, 15 (1A–4A)	LVTTL input	Accepts 0.8 V / 2.0 V logic thresholds; drives internal current sources
2, 6, 10, 14 (1Y–4Y)	Differential output (+)	Positive leg of LVDS pair; referenced to complementary Z pin
3, 5, 11, 13 (1Z–4Z)	Differential output (−)	Negative leg of LVDS pair; forms 100 Ω differential load path with Y pin
4, 12 (G)	Active-high enable	Both pins must be HIGH to activate all drivers; OR'd internally
8	GND	Analog/digital ground reference for biasing and return current paths
16	V_CC	Single 3.3 V supply for all drivers and input buffers

Key Features

Feature	Design Value
ANSI TIA/EIA-644 compliance	Guarantees interoperability with industry-standard LVDS receivers without level-shifting
Pin compatibility with AM26LS31/SN65LVDS31	Enables drop-in replacement in legacy RS-422 or LVDS designs with minimal layout change
High-impedance output on disable or V_CC = 0 V	Prevents bus contention during power-down or hot-swap; eliminates need for external isolation
Low 25 mW typical power per driver at 200 MHz	Reduces thermal load in dense multi-driver backplane applications
−40 °C to +125 °C extended characterization	Supports operation beyond rated range in thermally managed enclosures

Applications

FPGA-to-FPGA Interconnect

Industrial Backplane Data Links

Use Scenario: High-speed parallel data transfer between two FPGAs on separate PCBs using controlled-impedance traces.

IC Role / Device Role / Timing Role: LVDS transmitter converting LVTTL parallel bus outputs into low-noise differential pairs for EMI-resistant routing.

Use Value: Enables 400 Mbps per lane with <0.3 ns channel skew, preserving setup/hold timing across multi-bit buses.

Use Scenario: Reliable communication between CPU and I/O modules across a 12-slot industrial backplane.

IC Role / Device Role / Timing Role: Point-to-point LVDS driver providing robust signal integrity over 15 cm FR4 traces with 100 Ω characteristic impedance.

Use Value: Delivers 247 mV min differential swing and stable 1.2 V common mode, ensuring >200 mV noise margin at receiver input.

Automated Test Equipment (ATE) Signal Distribution

Medical Imaging Data Acquisition

Use Scenario: Synchronizing stimulus and capture channels across multiple ATE daughterboards.

IC Role / Device Role / Timing Role: Quad driver delivering time-aligned differential clocks and data strobes to remote test heads.

Use Value: Sub-nanosecond propagation delay matching and <0.6 ns edge rates minimize timing jitter in high-precision sampling windows.

Use Scenario: Transmitting real-time sensor pixel data from CT/MRI detector arrays to central processing units.

IC Role / Device Role / Timing Role: Low-power LVDS transmitter interfacing analog front-end ADCs to digital processing blocks.

Use Value: 25 mW/driver power dissipation reduces localized heating near sensitive analog components while maintaining SNR.

Equivalent & Alternatives

The following parts are listed as comparable options for similar LVDS driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN65LVDS31DR	TI part with identical pinout, same 3.3 V supply, but wider V_OD range (250–450 mV) and higher ICC (38 mA max)	Valid for same backplane/FPGA use cases; slightly higher power draw affects thermal budget in dense layouts	Select when TI supply chain preference or dual-sourcing strategy applies
MAX9121ESE+	Maxim part in SOIC-16; 3.0–3.6 V supply, 250 mV min V_OD, but no dual-enable architecture (single EN pin)	Requires board-level redesign for enable control; suitable only where simplified enable logic suffices	Choose only if SOIC-16 footprint is mandatory and dual-enable functionality is unused

Compared with SN65LVDS31DR and MAX9121ESE+, the STLVDS31BTR offers tighter channel skew (0.3 ns vs. 0.5 ns), dual-enable flexibility for redundant control, and lower typical power (25 mW vs. 30+ mW), making it optimal for thermally constrained, multi-lane synchronization-critical systems.

Availability

STLVDS31BTR is available at Aetrix Electronics and suitable for industrial backplane data links, FPGA interconnects, automated test equipment signal distribution, and medical imaging data acquisition requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for STLVDS31BTR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, analog ICs, power management devices, and sensors for industrial, automotive, and consumer markets.

The STLVDS31BTR belongs to ST's high-speed interface product line, engineered specifically for robust, low-power, multi-channel LVDS transmission in noise-sensitive industrial and instrumentation systems.

FAQ

Is STLVDS31BTR pin-compatible with AM26LS31?

Yes, STLVDS31BTR is fully pin-compatible with AM26LS31 in TSSOP16 footprint, including identical pin numbering for inputs (1A–4A), outputs (1Y/1Z–4Y/4Z), dual enable (G), V_CC, and GND. However, AM26LS31 is RS-422 compliant with higher voltage swing and no LVDS-specific common-mode control.

What is the maximum data rate supported by STLVDS31BTR?

STLVDS31BTR supports up to 400 Mbps per channel, verified by typical 750 ps rise/fall times and 1.7 ns propagation delay. System-level data rate depends on trace length, termination quality, and noise environment - validated up to 200 Mbps over 30 cm FR4 with <1% jitter.

Does STLVDS31BTR require external termination resistors?

Yes, STLVDS31BTR requires a 100 Ω differential termination resistor placed at the receiver end of each LVDS pair. The driver itself does not integrate termination; proper 100 Ω PCB trace impedance and point-to-point topology are essential to maintain signal integrity and meet TIA/EIA-644 compliance.

Can STLVDS31BTR operate with a 2.5 V supply?

No. STLVDS31BTR is specified only for 3.0–3.6 V operation per datasheet Table 6. At 2.5 V, output current sources fail to deliver required differential voltage (247 mV min), and input thresholds (VIH = 2.0 V, VIL = 0.8 V) become non-functional due to insufficient noise margin and drive strength.

STLVDS31BTR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 16-TSSOP (0.173", 4.40mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Type:: Driver

Protocol:: LVDS

Number of Drivers/Receivers:: 4/0

Duplex:: -

Receiver Hysteresis:: -

Data Rate:: -

Voltage - Supply:: 3V ~ 3.6V

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-TSSOP

STLVDS31BTR FAQ

1.How can I place an order for STLVDS31BTR through Aetrix?

Please submit a Request for Quotation (RFQ) for STLVDS31BTR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for STLVDS31BTR reliable?

The price and inventory of STLVDS31BTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STLVDS31BTR is usually 5 days.

3.What payment methods are accepted for STLVDS31BTR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STLVDS31BTR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STLVDS31BTR?

STLVDS31BTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STLVDS31BTR order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for STLVDS31BTR?

For technical support, including STLVDS31BTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STLVDS31BTR requirements.

6.How does Aetrix verify that STLVDS31BTR is sourced from the original manufacturer or authorized distributors?

All STLVDS31BTR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STLVDS31BTR meets industry standards.

7.What is the process for return or replacement of STLVDS31BTR?

All STLVDS31BTR units undergo pre-shipment inspection (PSI). If there is an issue with STLVDS31BTR, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The STLVDS31BTR part is unused and in its original packaging.

Return procedure for STLVDS31BTR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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