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

Texas Instruments DS34C86TM

Name: DS34C86TM
Brand: Texas Instruments
SKU: DS34C86TM
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: DS34C86TM

Manufacturer:: Texas Instruments

Category:: Drivers, Receivers, Transceivers

Package:: 16-SOIC (0.154", 3.90mm Width)

Datasheet:: DS34C86TM.pdf

Description:: IC TRANSCEIVER 0/4 16SOIC

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Product details

Overview

DS34C86TM from Texas Instruments is a quad CMOS differential line receiver compliant with RS-422 and RS-423 standards, featuring ±0.2V input sensitivity over ±7V common-mode range, 19 ns typical propagation delay, 60 mV input hysteresis, and TRI-STATE outputs for bus-compatible systems. It operates from 4.5V to 5.5V across −40°C to +85°C and is used in industrial serial communication interfaces requiring noise-immune signal reception.

For engineers reviewing the DS34C86TM datasheet, DS34C86TM pinout, DS34C86TM application, or DS34C86TM equivalent, key selection considerations include differential input threshold stability under wide common-mode swing, enable-controlled channel isolation, open-input failsafe behavior (output high), and SOIC-16 package compatibility with legacy RS-422 receiver layouts.

Technical Context

The DS34C86TM implements four independent CMOS differential receivers with internal pull-up/pull-down resistors on unused channels to prevent floating outputs. Each receiver features hysteresis (60 mV typ.) to suppress chatter on slow-rising/falling inputs and supports fail-safe operation-open inputs drive outputs high without external biasing.

TRI-STATE control is per-channel via dedicated enable pins, allowing dynamic bus arbitration. The device maintains input high-impedance and zero loading when VCC = 0V, supporting hot-swap and power-gating scenarios in multi-drop systems.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	4.5V to 5.5V - ensures compatibility with standard 5V logic rails and tolerates ±10% regulation variation.
Differential Input Sensitivity	±200 mV - guarantees reliable detection of valid RS-422 signals even with degraded line integrity or termination mismatch.
Propagation Delay	19 ns typical - enables >25 Mbps data rates in point-to-point links with tight timing budgets.
Input Hysteresis	60 mV typical - increases noise immunity by preventing output oscillation during slow edge transitions or EMI-induced input dither.
Common-Mode Range	±7V - supports robust operation in electrically noisy industrial environments with ground potential differences between nodes.
TRI-STATE Output Drive	±6 mA - provides sufficient current to drive standard LS-TTL loads while maintaining bus contention safety during disable.
Enable Input Thresholds	VIL ≤ 0.8V, VIH ≥ 2.0V - ensures clean logic-level recognition across temperature and voltage corners without external level-shifting.

Pinout & Package

DS34C86TM is housed in a 16-pin SOIC (Package Drawing D) with 1.27 mm pitch, 10.3 mm × 6.5 mm body size, and RoHS-compliant matte tin (CuSn) lead finish. Moisture Sensitivity Level is Level-1 (unlimited floor life at ≤30°C/60% RH).

Pin/Terminal	Circuit Role	Design Meaning
1, 4, 10, 13	Receiver Enable (EN1–EN4)	Active-high control per channel; drives corresponding receiver output into TRI-STATE when low.
2, 5, 11, 14	Inverting Input (A1–A4)	Negative-side differential input terminal; referenced to non-inverting input for polarity-sensitive RS-422 decoding.
3, 6, 12, 15	Non-Inverting Input (B1–B4)	Positive-side differential input terminal; defines logic polarity when paired with A-pin for true differential reception.
7, 8, 9, 16	Output (Y1–Y4)	CMOS-compatible TRI-STATE outputs; high-impedance when respective EN pin is low, otherwise driven high/low based on differential input state.
16	VCC	Positive supply rail (4.5–5.5V); powers all four receivers and internal bias circuitry.
8	GND	Signal reference ground; must be low-impedance connection to minimize common-mode noise coupling.

Key Features

Feature	Design Value
Open-input failsafe	Outputs default high when inputs are unconnected or unterminated - eliminates need for external pull-ups in point-to-point or stubbed topologies.
Zero-VCC input isolation	Inputs remain high-impedance and non-loading even when VCC = 0V - enables safe hot-plug insertion into powered-backplane systems.
Per-channel enable control	Four independent EN pins allow selective activation of individual receivers - reduces system-level power and avoids bus contention in multi-node configurations.
RS-422/RS-423 compliance	Meets EIA-422 electrical requirements including differential threshold, common-mode range, and output drive strength - ensures interoperability with certified transceivers and cabling.

Applications

Industrial PLC Serial Interface	Factory Automation Data Link
Use Scenario: RS-422 multidrop link between PLC CPU and remote I/O modules over 1200 m twisted-pair cable in electrically noisy factory environments. IC Role / Device Role / Timing Role: Differential receiver converting balanced line signals to single-ended CMOS logic for microcontroller UART input, rejecting common-mode noise induced by motor drives and welding equipment. Use Value: ±7V common-mode tolerance and 60 mV hysteresis ensure stable decoding despite ground potential shifts and EMI, eliminating spurious framing errors in Modbus RTU communication.	Use Scenario: High-speed sensor data aggregation from multiple encoders and analog input cards into a central motion controller using daisy-chained RS-422 links. IC Role / Device Role / Timing Role: Quad receiver enabling simultaneous monitoring of four independent differential channels, with per-channel enable allowing dynamic reconfiguration of active sensor sets. Use Value: 19 ns propagation delay supports >25 Mbps aggregate throughput, while TRI-STATE outputs permit shared bus arbitration without external multiplexers.
Point-of-Sale Terminal Backplane	Medical Imaging Equipment Interface
Use Scenario: Interconnection of barcode scanners, receipt printers, and cash drawers to a central POS controller via isolated RS-422 buses on a shared backplane. IC Role / Device Role / Timing Role: Signal conditioner isolating peripheral devices from controller logic, providing failsafe high output on disconnected peripherals to prevent undefined bus states. Use Value: Open-input failsafe behavior prevents false trigger events during hot-swap of peripherals, and ±200 mV sensitivity ensures reliable detection even with long cable runs and connector wear.	Use Scenario: Receiving synchronized timing and image data streams from X-ray detector arrays and MRI gradient controllers in diagnostic imaging systems. IC Role / Device Role / Timing Role: Low-jitter differential receiver preserving signal integrity of high-resolution timing pulses and pixel clock signals across shielded cables in RF-sensitive environments. Use Value: CMOS design minimizes internal jitter contribution (<1 ns added skew), and zero-VCC input isolation allows safe maintenance access without powering down entire subsystems.

Industrial PLC Serial Interface

Factory Automation Data Link

Use Scenario: RS-422 multidrop link between PLC CPU and remote I/O modules over 1200 m twisted-pair cable in electrically noisy factory environments.

IC Role / Device Role / Timing Role: Differential receiver converting balanced line signals to single-ended CMOS logic for microcontroller UART input, rejecting common-mode noise induced by motor drives and welding equipment.

Use Value: ±7V common-mode tolerance and 60 mV hysteresis ensure stable decoding despite ground potential shifts and EMI, eliminating spurious framing errors in Modbus RTU communication.

Use Scenario: High-speed sensor data aggregation from multiple encoders and analog input cards into a central motion controller using daisy-chained RS-422 links.

IC Role / Device Role / Timing Role: Quad receiver enabling simultaneous monitoring of four independent differential channels, with per-channel enable allowing dynamic reconfiguration of active sensor sets.

Use Value: 19 ns propagation delay supports >25 Mbps aggregate throughput, while TRI-STATE outputs permit shared bus arbitration without external multiplexers.

Point-of-Sale Terminal Backplane

Medical Imaging Equipment Interface

Use Scenario: Interconnection of barcode scanners, receipt printers, and cash drawers to a central POS controller via isolated RS-422 buses on a shared backplane.

IC Role / Device Role / Timing Role: Signal conditioner isolating peripheral devices from controller logic, providing failsafe high output on disconnected peripherals to prevent undefined bus states.

Use Value: Open-input failsafe behavior prevents false trigger events during hot-swap of peripherals, and ±200 mV sensitivity ensures reliable detection even with long cable runs and connector wear.

Use Scenario: Receiving synchronized timing and image data streams from X-ray detector arrays and MRI gradient controllers in diagnostic imaging systems.

IC Role / Device Role / Timing Role: Low-jitter differential receiver preserving signal integrity of high-resolution timing pulses and pixel clock signals across shielded cables in RF-sensitive environments.

Use Value: CMOS design minimizes internal jitter contribution (<1 ns added skew), and zero-VCC input isolation allows safe maintenance access without powering down entire subsystems.

Equivalent & Alternatives

The following parts are listed as comparable options for similar differential receiver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN65LBC179D	Higher supply range (4.75–5.25V), lower input hysteresis (30 mV), no open-input failsafe	Requires external pull-up resistors for failsafe; better suited for precision timing-critical links with controlled termination	Select when tighter VCC tolerance and lower propagation delay variation (±5 ns) are prioritized over failsafe behavior
MAX3095ESA+	Wider common-mode range (−10V to +12V), integrated ESD protection (±15 kV HBM), higher ICC (30 mA)	Designed for harsher ESD environments (e.g., handheld medical devices); higher quiescent current limits battery-powered use	Select when system-level ESD robustness exceeds ±2 kV HBM and extended common-mode margin is required beyond ±7V

Compared with SN65LBC179D and MAX3095ESA+, the DS34C86TM offers unique open-input failsafe and zero-VCC input isolation-critical for industrial backplanes and hot-swap peripherals-while maintaining lower ICC (23 mA typ.) and proven compatibility with legacy RS-422 infrastructure.

Availability

DS34C86TM is available at Aetrix Electronics and suitable for industrial automation, factory data acquisition, and medical imaging equipment requiring stable component supply, long-term lifecycle support, and RoHS-compliant SOIC packaging.

Supply support for DS34C86TM 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

Texas Instruments is a global semiconductor company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and communications markets since 1930.

The DS34C86TM belongs to TI's legacy interface IC portfolio designed specifically for robust, low-power differential data reception in electrically hostile environments-targeting RS-422/RS-423-compliant industrial control and instrumentation systems.

FAQ

What is the maximum common-mode input voltage range supported by the DS34C86TM?

The DS34C86TM supports a common-mode input voltage range of ±7V under normal operating conditions, as specified in its DC Electrical Characteristics table. This range ensures reliable operation in industrial settings where ground potential differences between nodes can exceed several volts. The absolute maximum rating extends to ±14V, but sustained operation outside ±7V may affect parametric performance or reliability. DS34C86TM maintains valid logic output within this ±7V window across its full −40°C to +85°C temperature range.

Does the DS34C86TM require external pull-up or pull-down resistors on its inputs?

No, the DS34C86TM does not require external pull-up or pull-down resistors on its inputs. It includes internal fail-safe circuitry that drives outputs high when inputs are open or unterminated. This feature is explicitly documented in the datasheet's "Features" section and truth table. The DS34C86TM's open-input failsafe behavior eliminates the need for external biasing components, simplifying PCB layout and reducing BOM count in point-to-point or stubbed RS-422 configurations.

How does the DS34C86TM handle power-down scenarios where VCC is removed?

The DS34C86TM maintains high-impedance input terminals and does not load the differential line when VCC = 0V, as confirmed in the "Features" list and Absolute Maximum Ratings section. This zero-VCC input isolation allows safe hot-swap operation in backplane systems where the DS34C86TM can be inserted or removed without disrupting powered communication lines. The DS34C86TM's inputs remain non-invasive and electrically decoupled from the bus during power-off, preventing signal corruption or damage to upstream transceivers.

What is the propagation delay variation between channels in the DS34C86TM?

The DS34C86TM datasheet specifies a typical propagation delay of 19 ns with a maximum of 30 ns across all channels under standard test conditions (VCC = 5V, CL = 50 pF, VDIFF = 2.5V). While inter-channel skew is not explicitly guaranteed, the device's monolithic CMOS construction and matched internal layout ensure tight matching-typical skew between any two channels is less than 2 ns. This consistency makes the DS34C86TM suitable for parallel data capture applications where timing alignment across multiple receivers is critical, such as multi-axis encoder interfacing.

Is the DS34C86TM pin-compatible with the DS3486 receiver?

Yes, the DS34C86TM is explicitly stated as pin-compatible with the DS3486 in the datasheet's "Features" section. Both devices share identical pin assignments, SOIC-16 packaging, and functional mapping-including enable pins, differential input pairs, and outputs. However, the DS34C86TM offers improved parameters including lower power consumption (23 mA vs. ~35 mA), tighter propagation delay (19 ns typ. vs. 17–19 ns), and enhanced input hysteresis (60 mV vs. unspecified). Designers can directly replace DS3486 with DS34C86TM without PCB modifications.

DS34C86TM Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: -

Package/Case:: 16-SOIC (0.154", 3.90mm Width)

Packaging:: Tube

Product Status:: Obsolete

Type:: Receiver

Protocol:: RS422, RS423

Number of Drivers/Receivers:: 0/4

Duplex:: -

Receiver Hysteresis:: 60 mV

Data Rate:: -

Voltage - Supply:: 4.5V ~ 5.5V

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-SOIC

DS34C86TM FAQ

1.How can I place an order for DS34C86TM through Aetrix?

Please submit a Request for Quotation (RFQ) for DS34C86TM 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 DS34C86TM reliable?

The price and inventory of DS34C86TM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS34C86TM is usually 5 days.

3.What payment methods are accepted for DS34C86TM?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS34C86TM transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DS34C86TM?

DS34C86TM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DS34C86TM 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 DS34C86TM?

For technical support, including DS34C86TM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS34C86TM requirements.

6.How does Aetrix verify that DS34C86TM is sourced from the original manufacturer or authorized distributors?

All DS34C86TM 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 DS34C86TM meets industry standards.

7.What is the process for return or replacement of DS34C86TM?

All DS34C86TM units undergo pre-shipment inspection (PSI). If there is an issue with DS34C86TM, 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 DS34C86TM part is unused and in its original packaging.

Return procedure for DS34C86TM:

1.Submit a request within 90 days.

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

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