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Texas Instruments DS3695ATM
- Part No.:
- DS3695ATM
- Manufacturer:
- Texas Instruments
- Category:
- Drivers, Receivers, Transceivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
DS3695ATM.pdf
- Description:
- IC TRANSCEIVER HALF 1/1 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,452
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Product details
Overview
DS3695ATM from Texas Instruments is a high-speed, single-supply (+5V) RS485/RS422 differential transceiver designed for multipoint bus transmission in industrial automation and building control systems. It features 15 ns typical driver propagation delay, −7V to +12V bus common-mode range, and thermal shutdown protection with TRI-STATE driver/receiver outputs over the full common-mode range.
For engineers reviewing the DS3695ATM datasheet, DS3695ATM pinout, DS3695ATM application, or DS3695ATM equivalent, this device supports robust noise-immune communication in electrically noisy environments, enables up to 32 nodes on a single bus, and provides fail-safe receiver hysteresis (70 mV typical) for reliable logic-level interpretation under marginal signal conditions.
Technical Context
The DS3695ATM implements a true differential driver and receiver pair with independent enable controls (DE and RE), supporting half-duplex RS485 and full-duplex RS422 modes. Its driver delivers ≥5 V differential output voltage (unloaded) and maintains >1.5 V into 27 Ω (RS485 load), while the receiver exhibits ±0.2 V differential threshold with 70 mV hysteresis and 12 kΩ input resistance.
TRI-STATE operation is guaranteed across the full −7V to +12V bus common-mode range, and thermal shutdown forces driver outputs into high-impedance state without requiring external supervision. Unlike DS3696, DS3695ATM does not include the TS (thermal shutdown status) pin - it lacks the open-collector fault-reporting output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | +4.75V to +5.25V - ensures compatibility with standard 5V logic rails and stable operation under regulated power supplies. |
| Bus Common-Mode Range | −7V to +12V - accommodates large ground potential differences between nodes in distributed industrial networks. |
| Differential Driver Propagation Delay | 15 ns (typical) - enables reliable data rates up to ~20 Mbps over short traces with tight timing margins. |
| Receiver Input Hysteresis | 70 mV (typical) - prevents chatter during slow-rising/falling or noisy differential signals near switching threshold. |
| Driver Output Short-Circuit Current | ±250 mA - provides robust fault tolerance against bus shorts without latch-up or permanent damage. |
| Receiver Input Resistance | 12 kΩ - allows up to 32 unit loads on a single RS485 bus per EIA-485 standard compliance. |
| Thermal Shutdown Threshold | Internally triggered - automatically disables driver outputs during overtemperature events to prevent thermal runaway. |
Pinout & Package
DS3695ATM is housed in an 8-pin plastic dual in-line package (PDIP), package drawing P (R-PDIP-T8), with through-hole mounting and RoHS-compliant CU SN lead finish. The package supports commercial temperature operation (0°C to +70°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (DI) | Driver Input | Accepts TTL/CMOS-level transmit data; VIH = 2.0 V min, VIL = 0.8 V max ensures clean logic transition. |
| 2 (DE) | Driver Enable | Active-high control: when high, driver outputs (DO/DO) drive bus; when low, outputs enter TRI-STATE. |
| 3 (GND) | Ground Reference | Signal return for internal circuitry; must be connected to local system ground to maintain common-mode integrity. |
| 4 (RO) | Receiver Output | TTL-compatible output (VOH ≥ 2.4 V @ −400 μA, VOL ≤ 0.5 V @ 16 mA) drives downstream logic directly. |
| 5 (RI) | Receiver Inverting Input | Differential bus input terminal; paired with RI for true differential reception and noise rejection. |
| 6 (RI) | Receiver Non-Inverting Input | Differential bus input terminal; voltage difference vs. RI determines RO logic state per hysteresis threshold. |
| 7 (DO) | Driver Non-Inverting Output | Active-high bus driver output; complements DO to generate differential bus voltage swing. |
| 8 (DO) | Driver Inverting Output | Active-low bus driver output; forms differential pair with DO for EIA-485/422 compliant signaling. |
Key Features
| Feature | Design Value |
|---|---|
| RS485/RS422 Compliance | Fully meets EIA-485 electrical specifications including unit-load impedance, common-mode range, and driver output capability. |
| Full Common-Mode TRI-STATE | Driver and receiver outputs remain high-impedance across −7V to +12V bus voltage - essential for hot-swap and multi-drop bus arbitration. |
| Thermal Shutdown Protection | Automatic driver disable during overtemperature events prevents thermal damage and ensures system-level fault containment. |
| 70 mV Receiver Hysteresis | Guarantees clean, bounce-free output transitions even with slow or distorted differential inputs in electrically harsh environments. |
| Single +5V Supply Operation | Eliminates need for dual or split supplies - simplifies power design and reduces BOM cost in space-constrained industrial nodes. |
Applications
| Industrial PLC Networks | Building Automation Systems |
|---|---|
Use Scenario: Multi-node Modbus RTU communication between programmable logic controllers, I/O modules, and HMIs over long cable runs in factory floors. IC Role / Device Role / Timing Role: Half-duplex RS485 transceiver providing bidirectional differential signaling with noise immunity and ground-potential tolerance. Use Value: Enables reliable 115.2 kbps+ communication across 1200 m cables with up to 32 nodes, leveraging −7V to +12V common-mode range to suppress ground-loop interference. |
Use Scenario: Interconnection of HVAC controllers, lighting panels, and fire alarm interfaces in commercial buildings using BACnet MS/TP physical layer. IC Role / Device Role / Timing Role: RS485 line driver/receiver implementing the physical layer for deterministic serial control bus with collision-aware polling. Use Value: Provides 15 ns propagation delay and 70 mV hysteresis to ensure accurate frame detection and timing alignment across distributed nodes operating at 76.8 kbps. |
| Point-of-Sale Terminal Networks | Energy Meter Data Collection |
Use Scenario: Daisy-chained receipt printers, barcode scanners, and cash drawers communicating with a central POS host via RS485. IC Role / Device Role / Timing Role: Robust transceiver handling intermittent bus faults, ESD events, and mixed-vendor node interoperability. Use Value: Thermal shutdown and ±250 mA short-circuit driver current protect against accidental bus wiring errors and sustained overcurrent conditions. |
Use Scenario: AMR (Automatic Meter Reading) concentrators collecting consumption data from hundreds of smart electricity meters over twisted-pair infrastructure. IC Role / Device Role / Timing Role: Low-power RS485 interface enabling sleep/wake cycling while maintaining bus readiness for scheduled polling bursts. Use Value: 27–40 mA supply current (driver disabled/enabled) supports energy-efficient polling architecture without sacrificing bus responsiveness. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar RS485 transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX485CPA+ | Lower driver output voltage (1.5 V min into 54 Ω), no thermal shutdown, 250 kbps max recommended data rate. | Suitable for lower-speed, cost-sensitive designs where fault protection is secondary. | Select MAX485CPA+ only if thermal shutdown and >10 Mbps timing performance are not required. |
| SN65HVD72DR | 3.3V supply only, integrated IEC 61000-4-2 ESD protection (±15 kV), higher 500 Mbps capable slew-rate control. | Designed for modern 3.3V systems requiring enhanced ESD robustness and faster edge control. | Choose SN65HVD72DR for new 3.3V designs needing certified ESD immunity and flexible data rate scaling. |
Compared with MAX485CPA+ and SN65HVD72DR, DS3695ATM offers superior thermal fault containment and native 5V operation with proven 20 Mbps timing margin - making it optimal for legacy industrial 5V backplanes and high-reliability multipoint repeater nodes.
Availability
DS3695ATM is available at Aetrix Electronics and suitable for industrial PLC networks, building automation systems, point-of-sale terminal interconnects, and energy meter data collection requiring stable component supply and long-term obsolescence management.
Supply support for DS3695ATM 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 leader specializing in analog, embedded processing, and connectivity solutions for industrial, automotive, and communications markets.
The DS3695ATM belongs to TI's legacy RS485 transceiver family, engineered specifically for high-noise, multi-drop industrial data links demanding wide common-mode tolerance, thermal resilience, and strict EIA-485 compliance.
FAQ
What is the maximum data rate supported by the DS3695ATM?
The DS3695ATM supports reliable operation up to 20 Mbps in short-haul configurations due to its 15 ns typical driver propagation delay and 6–10 ns differential transition times. Actual achievable data rate depends on cable length, termination, and noise environment - for 1200 m runs, 115.2 kbps is recommended per EIA-485 guidelines. DS3695ATM does not specify a hard maximum rate but delivers timing performance validated for high-speed repeater and backbone node use cases.
Does the DS3695ATM include thermal shutdown reporting via a dedicated pin?
No, the DS3695ATM does not feature a TS (thermal shutdown) pin. That function is exclusive to the DS3696 variant, which provides an open-collector output with internal 10 kΩ pull-up to report thermal fault events. DS3695ATM performs thermal shutdown internally but does not signal it externally - driver outputs simply enter high-impedance state without status feedback.
Can the DS3695ATM operate with a 3.3V supply?
No, DS3695ATM is specified only for +4.75V to +5.25V operation. Its input thresholds (VIH = 2.0 V min, VIL = 0.8 V max), driver output levels, and internal biasing are optimized for 5V TTL/CMOS logic families. Using 3.3V violates recommended operating conditions and risks unreliable DE/DI signal recognition and reduced noise margin.
How many DS3695ATM transceivers can be connected to a single RS485 bus?
Up to 32 DS3695ATM transceivers can be connected to one RS485 bus, as each presents ≤1 unit load (12 kΩ receiver input resistance). This complies with the EIA-485 standard's 32-unit-load limit. Additional nodes require RS485 repeaters or transceivers with fractional unit-load ratings (e.g., 1/4 or 1/8 UL).
Is the DS3695ATM pin-compatible with the DS3695N or DS3695TN variants?
Yes, DS3695ATM shares identical pinout, function mapping, and PDIP-8 package (drawing P) with DS3695N and DS3695TN. The suffix "TM" denotes tape-and-reel packaging and RoHS compliance, while "N" indicates tube packaging and "TN" specifies extended temperature range (−40°C to +85°C); all three are electrically and mechanically interchangeable in PCB layout.
DS3695ATM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- Transceiver
- Protocol:
- RS422, RS485
- Number of Drivers/Receivers:
- 1/1
- Duplex:
- Half
- Receiver Hysteresis:
- 70 mV
- Data Rate:
- -
- Voltage - Supply:
- 4.75V ~ 5.25V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
DS3695ATM FAQ
1.How can I place an order for DS3695ATM through Aetrix?
Please submit a Request for Quotation (RFQ) for DS3695ATM 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 DS3695ATM reliable?
The price and inventory of DS3695ATM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS3695ATM is usually 5 days.
3.What payment methods are accepted for DS3695ATM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS3695ATM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS3695ATM?
DS3695ATM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS3695ATM 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 DS3695ATM?
For technical support, including DS3695ATM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS3695ATM requirements.
6.How does Aetrix verify that DS3695ATM is sourced from the original manufacturer or authorized distributors?
All DS3695ATM 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 DS3695ATM meets industry standards.
7.What is the process for return or replacement of DS3695ATM?
All DS3695ATM units undergo pre-shipment inspection (PSI). If there is an issue with DS3695ATM, 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 DS3695ATM part is unused and in its original packaging.
Return procedure for DS3695ATM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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