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Texas Instruments SN75ALS160DWR
- Part No.:
- SN75ALS160DWR
- Manufacturer:
- Texas Instruments
- Category:
- Drivers, Receivers, Transceivers
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SN75ALS160DWR.pdf
- Description:
- IC TRANSCEIVER HALF 8/8 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:10,543
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Product details
Overview
SN75ALS160DWR from Texas Instruments is an 8-channel bidirectional GPIB transceiver IC designed for IEEE-488.1-1978 bus interface applications. It features ALS logic, 20 ns max propagation delay, 46 mW max per-channel power dissipation, high-impedance pnp inputs, and receiver hysteresis of 650 mV typical. It supports passive-pullup or 3-state driver outputs and provides power-up/power-down glitch-free operation.
For engineers reviewing the SN75ALS160DWR datasheet, SN75ALS160DWR pinout, SN75ALS160DWR application, or SN75ALS160DWR equivalent, key selection considerations include IEEE-488 compliance, dual-mode (pullup/3-state) output control via TE/PE pins, bus-termination resistor integration, VCC = 0 high-impedance behavior, and SOIC-20 thermal performance (θJA = 58°C/W).
Technical Context
The SN75ALS160DWR implements eight independent bidirectional data channels with separate talk-enable (TE) and pullup-enable (PE) control logic per channel. Each channel combines a high-impedance pnp input receiver with hysteresis and an open-collector driver capable of sinking up to 48 mA.
Its internal bus-terminating resistors enable automatic high-impedance isolation when VCC = 0, and its ALS Schottky architecture delivers fast switching (tPLH/tPHL ≤ 20 ns) while maintaining low static power (ICC ≤ 80 mA at VCC = 5 V). The device operates across 0°C to 70°C and requires VCC = 4.75–5.25 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | 8-channel IEEE-488.1 bidirectional transceiver for GPIB bus interface |
| Propagation Delay | ≤20 ns max (low-to-high/high-to-low), enabling reliable 1 MHz+ data rates on GPIB |
| Power Dissipation | ≤46 mW per channel, supporting dense board layouts without forced cooling |
| Output Sink Current | 48 mA max per bus port, sufficient to drive standard GPIB termination loads |
| Receiver Hysteresis | 650 mV typical, improving noise immunity on shared, unterminated bus lines |
| Supply Voltage | 4.75–5.25 V, compatible with standard +5 V logic rails and tolerant of rail droop |
| VCC = 0 Behavior | High-impedance bus ports, preventing loading or contention during power sequencing |
Pinout & Package
SN75ALS160DWR uses a 20-pin SOIC (DW) package, 7.5 mm × 12.8 mm footprint, 2.65 mm max height, RoHS-compliant NIPDAU/SN lead finish, and MSL Level-1 rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (TE) | Talk Enable input | Active-high control: enables driver output states (pullup or 3-state) when high; forces high-Z when low |
| 2–9 (B1–B8) | Bus-side I/O ports | Connect directly to IEEE-488 bus lines; internally terminated; support passive pullup or 3-state modes |
| 10 (GND) | Ground reference | Signal and power return path; must be low-impedance for GPIB noise margin |
| 11 (VCC) | Positive supply | +5 V DC supply; powers ALS logic and internal termination resistors |
| 12–19 (D1–D8) | Terminal-side I/O ports | Interface with local controller or peripheral; high-impedance pnp inputs with hysteresis |
| 20 (PE) | Pullup Enable input | When TE = high: PE = low → passive pullup mode; PE = high → 3-state mode |
Key Features
| Feature | Design Value |
|---|---|
| IEEE-488.1 Compliance | Fully meets electrical and timing requirements of IEEE Standard 488-1978 for GPIB bus interface |
| Dual-Mode Output Control | TE/PE logic allows dynamic selection between passive-pullup (for legacy bus loads) and 3-state (for multipoint arbitration) |
| Power-Down Isolation | Internal active turn-off circuitry ensures bus ports present >100 kΩ impedance when VCC = 0 |
| Glitch-Free Power Sequencing | No bus contention or false transitions during power-up/down due to controlled output enable timing |
| ALS Schottky Performance | Combines TTL-compatible voltage levels with 20 ns propagation and <80 mA total ICC at 5 V |
Applications
| Test Equipment Interface | GPIB Peripheral Controller |
|---|---|
Use Scenario: Integrating digital multimeters, oscilloscopes, or spectrum analyzers into automated test systems using GPIB. IC Role / Device Role / Timing Role: SN75ALS160DWR serves as the physical layer transceiver, translating controller-side logic signals to robust bus-level voltages and timing. Use Value: Enables reliable multi-device communication over 2-meter cables at full GPIB speed (1 Mbyte/s burst) with built-in hysteresis and termination. | Use Scenario: Adding IEEE-488 connectivity to embedded instruments such as programmable power supplies or signal generators. IC Role / Device Role / Timing Role: SN75ALS160DWR acts as the bidirectional bus interface, managing data flow between microcontroller GPIO and the GPIB bus under TE/PE control. Use Value: Eliminates need for external pullups or bus switches; supports hot-plug-safe power-down isolation per IEEE-488 clause 3.5.3. |
| Legacy System Upgrades | Lab Automation Hub |
Use Scenario: Retrofitting older industrial controllers with modern microcontrollers while retaining existing GPIB instrumentation. IC Role / Device Role / Timing Role: SN75ALS160DWR bridges TTL/CMOS logic levels to GPIB bus levels, handling level translation and bus contention management. Use Value: Maintains compatibility with legacy GPIB devices without redesigning bus topology or adding discrete termination networks. | Use Scenario: Centralized control unit coordinating multiple GPIB instruments in semiconductor ATE or calibration labs. IC Role / Device Role / Timing Role: SN75ALS160DWR provides eight independent bidirectional channels, allowing parallel communication with up to eight instruments. Use Value: Reduces component count vs. discrete transceivers; SOIC-20 package enables compact PCB layout for multi-port hub designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar GPIB transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN75ALS160DW | Same die, SOIC-20 tube packaging (25 pcs); identical electrical specs and pinout | No reel-based automation support; suited for prototyping or low-volume builds | Select SN75ALS160DW for bench validation; SN75ALS160DWR for SMT production with tape-and-reel feeders |
| SN75ALS161 | Complementary bus management transceiver; provides handshake control (ATN, DAV, NRFD, NDAC) but no data channels | Used alongside SN75ALS160DWR to complete full 16-wire GPIB interface; not a functional replacement | SN75ALS161 is a system partner-not a drop-in alternative-for full IEEE-488 implementation |
Compared with SN75ALS160DW, SN75ALS160DWR offers identical performance in tape-and-reel format for automated assembly; compared with SN75ALS161, it provides data-path functionality rather than handshake control-both are required together for full GPIB compliance.
Availability
SN75ALS160DWR is available at Aetrix Electronics and suitable for test equipment interface, GPIB peripheral controller, and legacy system upgrade applications requiring stable component supply and long-term industrial availability.
Supply support for SN75ALS160DWR 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 delivering analog, embedded processing, and connectivity solutions with emphasis on reliability, longevity, and industrial-grade qualification.
The SN75ALS160DWR belongs to TI's legacy interface IC portfolio, specifically engineered for IEEE-488 bus interoperability in automated test, measurement, and laboratory instrumentation systems.
FAQ
What is the operating temperature range for SN75ALS160DWR?
The SN75ALS160DWR is characterized for operation from 0°C to 70°C ambient temperature. This commercial-grade range aligns with standard lab and industrial control environments where GPIB equipment is typically deployed. Thermal derating is not required within this range, and θJA = 58°C/W ensures adequate junction temperature margin at full load.
Does SN75ALS160DWR support true 3-state outputs on the bus side?
Yes, SN75ALS160DWR supports true 3-state outputs on the bus side (B1–B8) when TE = high and PE = high. In this mode, outputs present high impedance (Z) to the bus, enabling multi-drop arbitration. When PE = low, the same pins operate as passive-pullup outputs-distinct from 3-state-and remain active drivers.
Can SN75ALS160DWR be used without external pullup resistors on the GPIB bus?
Yes, SN75ALS160DWR integrates internal bus-terminating resistors and supports passive-pullup mode (TE = high, PE = low), eliminating the need for external pullups on B1–B8. This simplifies design and ensures compliance with IEEE-488.1 termination requirements without discrete components.
What is the maximum sink current capability of SN75ALS160DWR on bus ports?
The SN75ALS160DWR supports up to 48 mA sink current per bus port (B1–B8) under recommended operating conditions (VCC = 4.75–5.25 V, TA = 0–70°C). This meets IEEE-488.1 specification for driver strength and allows direct connection to standard GPIB bus loads without buffering.
How does SN75ALS160DWR behave when VCC is disconnected or at 0 V?
When VCC = 0 V, SN75ALS160DWR automatically places all bus ports (B1–B8) into a high-impedance state via its internal active turn-off circuitry. This prevents loading or contention on the GPIB bus during power sequencing, satisfying IEEE-488.1 clause 3.5.3 for safe power-down behavior.
SN75ALS160DWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Transceiver
- Protocol:
- IEEE 488
- Number of Drivers/Receivers:
- 8/8
- Duplex:
- Half
- Receiver Hysteresis:
- 650 mV
- Data Rate:
- -
- Voltage - Supply:
- 4.75V ~ 5.25V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-SOIC
SN75ALS160DWR FAQ
1.How can I place an order for SN75ALS160DWR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN75ALS160DWR 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 SN75ALS160DWR reliable?
The price and inventory of SN75ALS160DWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN75ALS160DWR is usually 5 days.
3.What payment methods are accepted for SN75ALS160DWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN75ALS160DWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN75ALS160DWR?
SN75ALS160DWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN75ALS160DWR 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 SN75ALS160DWR?
For technical support, including SN75ALS160DWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN75ALS160DWR requirements.
6.How does Aetrix verify that SN75ALS160DWR is sourced from the original manufacturer or authorized distributors?
All SN75ALS160DWR 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 SN75ALS160DWR meets industry standards.
7.What is the process for return or replacement of SN75ALS160DWR?
All SN75ALS160DWR units undergo pre-shipment inspection (PSI). If there is an issue with SN75ALS160DWR, 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 SN75ALS160DWR part is unused and in its original packaging.
Return procedure for SN75ALS160DWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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