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Texas Instruments 5962-8872701RA
- Part No.:
- 5962-8872701RA
- Manufacturer:
- Texas Instruments
- Package:
- 20-CDIP (0.300", 7.62mm)
- Datasheet:
-
5962-8872701RA.pdf
- Description:
- SN54ALS640B OCTAL BUS TRANSCEIVE
- Quantity:
- Payment:
- Shipping:
Inventory:1,465
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Product details
Overview
5962-8872701RA from Texas Instruments is a military-grade octal bus transceiver with 3-state outputs, designed for bidirectional asynchronous data transfer between A and B buses in high-reliability systems. It features inverting logic, 20-pin CDIP (J) package, –55°C to 125°C operating range, and supports 48 mA low-level output current (IOL) in the -1 variant. It is used in avionics backplane interfaces requiring isolation and direction control.
For engineers reviewing the 5962-8872701RA datasheet, 5962-8872701RA pinout, 5962-8872701RA application, or 5962-8872701RA equivalent, key selection criteria include its QML-38534 Class V qualification, 3-state enable/disable timing (tPZH/tPLZ ≤ 25 ns), DIR-controlled bidirectional flow, and compatibility with 5-V TTL/ALS logic families in harsh-environment embedded systems.
Technical Context
The 5962-8872701RA implements dual-bus bidirectional data routing via a single DIR input that selects A→B or B→A transfer, while OE independently enables or isolates all outputs. Its internal architecture uses ALS (Advanced Low-Power Schottky) logic for improved speed-power tradeoff over standard LS.
It operates strictly at 5 V (4.5–5.5 V), delivers guaranteed 48 mA sink capability per output under VCC = 4.75–5.25 V, and meets MIL-PRF-38534 Class V screening requirements including burn-in, temperature cycling, and hermeticity testing for space and defense platforms.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Family | ALS (Advanced Low-Power Schottky) - ensures 10 ns typical propagation delay with lower power than AS, suitable for legacy military systems requiring proven reliability. |
| Operating Temperature | –55°C to 125°C - qualified per MIL-PRF-38534 Class V for deployment in airborne, missile, and ground vehicle electronics without derating. |
| Supply Voltage | 4.5 V to 5.5 V - compatible with regulated 5-V military power supplies; absolute max 7 V prevents latch-up during transient overvoltage events. |
| Output Drive (IOL) | 48 mA per pin - enables direct interface to terminated transmission lines or multiple TTL inputs without external buffers in bus-hold or hot-swap scenarios. |
| Propagation Delay | tPLH/tPHL ≤ 14 ns (max) - supports synchronous data rates up to ~35 MHz in point-to-point bus configurations with controlled trace lengths. |
| 3-State Enable Time | tPZH ≤ 25 ns, tPLZ ≤ 27 ns - ensures clean bus arbitration with minimal contention window during direction or output state transitions. |
| Input Thresholds | VIH = 2.0 V, VIL = 0.8 V - matches standard TTL logic levels, allowing interoperability with legacy 74LS/74ALS components on shared buses. |
Pinout & Package
5962-8872701RA is housed in a 20-pin Ceramic Dual-In-Line Package (CDIP, J package), hermetically sealed with flat leads and 0.300-inch body width. The package meets MIL-STD-1835 requirements for military-grade thermal and mechanical robustness.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (DIR) | Direction Control Input | Determines data flow direction: low = B→A, high = A→B; TTL-compatible threshold ensures reliable control from microcontroller GPIO or discrete logic. |
| 2–9 (A1–A8) | Bus A I/O Terminals | Bidirectional data pins connected to A-side bus; internally buffered with 3-state drivers enabling high-impedance isolation when OE is high. |
| 10 (GND) | Ground Reference | Primary signal return path; must be connected to system chassis ground plane to minimize noise coupling into sensitive analog sections. |
| 11–18 (B1–B8) | Bus B I/O Terminals | Bidirectional data pins connected to B-side bus; electrically identical to A-side pins and share same drive strength and timing specs. |
| 19 (OE) | Output Enable Input | Active-low control: low enables transceiver, high places all A/B pins in high-impedance state - critical for bus sharing and hot-plug safety. |
| 20 (VCC) | Power Supply | +5 V supply pin; requires local 0.1 µF ceramic decoupling capacitor placed within 5 mm to suppress switching noise and maintain stable core voltage. |
Key Features
| Feature | Design Value |
|---|---|
| QML-38534 Class V Qualification | Fully screened per MIL-PRF-38534 for spaceflight and strategic defense systems, including lot acceptance testing, radiation hardness assurance (RHA), and long-term reliability validation. |
| 48 mA Output Sink Capability | Enables direct driving of unterminated 50-Ω transmission lines or fan-out to ≥10 standard TTL loads without external drivers - reduces BOM count and board area in compact modules. |
| Inverting Logic Architecture | Ensures predictable signal polarity across both bus directions, simplifying timing analysis and eliminating need for external inverters in feedback or handshake circuits. |
| 20-Pin CDIP Hermetic Package | Provides moisture resistance, thermal stability (–55°C to 125°C), and mechanical ruggedness required for vibration-prone environments such as aircraft avionics bays and naval radar cabinets. |
| 3-State Isolation Timing | tPHZ/tPLZ ≤ 12 ns (min) and ≤ 27 ns (max) guarantees sub-30 ns bus release - essential for deterministic arbitration in time-critical real-time control loops. |
Applications
| Avionics Data Bus Interface | Military Vehicle Central Control Unit |
|---|---|
Use Scenario: Interfacing flight computer ARINC 429 receiver logic to a local sensor acquisition bus with voltage-level translation and direction arbitration. IC Role / Device Role / Timing Role: Bidirectional bus transceiver managing isolated data exchange between dissimilar subsystems; DIR synchronizes with command strobes, OE enables/disables during fault recovery. Use Value: Eliminates need for discrete level shifters and direction logic gates, reducing interconnect complexity and improving mean time between failures (MTBF) in DO-254-compliant designs. | Use Scenario: Enabling dynamic reconfiguration of CAN and MIL-STD-1553B bus segments in armored vehicle electronic architecture during mission mode switching. IC Role / Device Role / Timing Role: Bus isolator and direction controller coordinating data flow between mission processor and payload controllers; OE synchronized to watchdog timeout signals for safe bus shutdown. Use Value: Provides hardware-enforced bus segmentation with <25 ns disable latency, preventing spurious communication during mode transitions and meeting MIL-HDBK-217F reliability targets. |
| Tactical Radio Baseband Processing | Spacecraft Onboard Computer Expansion |
Use Scenario: Routing digital audio and control signals between FPGA-based modulator/demodulator and legacy DSP co-processors in handheld SATCOM radios. IC Role / Device Role / Timing Role: Octal transceiver handling parallel I/O handshaking and status register reads; DIR toggled by FPGA state machine, OE gated by radio channel activity detector. Use Value: Supports 10+ Mbps burst-mode data transfers with deterministic turnaround time, meeting TIA-102-BACB compliance for secure tactical waveform interoperability. | Use Scenario: Extending memory-mapped I/O between rad-hard CPU and radiation-tolerant SRAM banks in small satellite onboard computers. IC Role / Device Role / Timing Role: High-reliability bus repeater enabling address/data separation across PCB partitions; DIR fixed for memory read/write direction, OE tied to CPU reset assertion. Use Value: Delivers 100% functional uptime over 15-year LEO missions due to hermetic CDIP packaging and QML Class V screening - validated per NASA EEE-INST-002. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 5962-8955301RA | SN54AS640 variant: faster propagation (tPLH ≤ 8 ns), higher IOL (64 mA), but no -1 version and identical CDIP J package. | Preferred where higher speed and drive strength are needed without changing layout; not suitable if ALS logic family timing correlation is required. | Select 5962-8955301RA only when system timing margin is insufficient with 5962-8872701RA's 14 ns max delay. |
| SNJ54ALS640BJ | Same die and spec as 5962-8872701RA but marked per JAN/SL specification; identical electricals, packaging, and screening level. | No functional difference - used interchangeably in procurement; marking format differs per DoD contract requirements. | Choose SNJ54ALS640BJ when contract documentation mandates JAN/SL part numbering instead of 5962- prefix. |
Compared with 5962-8872701RA, 5962-8955301RA offers higher speed and drive at the cost of increased ICC (up to 123 mA vs. 60 mA), while SNJ54ALS640BJ provides identical performance with alternate military marking - enabling sourcing flexibility without design or layout changes.
Availability
5962-8872701RA is available at Aetrix Electronics and suitable for avionics data bus interface, military vehicle central control units, and spacecraft onboard computer expansion requiring stable component supply across extended production lifecycles.
Supply support for 5962-8872701RA 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 U.S.-based semiconductor company founded in 1930, specializing in analog, embedded processing, and high-reliability military ICs with over 90 years of aerospace and defense heritage.
The 5962-8872701RA belongs to TI's QML-38534 qualified logic family, engineered specifically for mission-critical systems where radiation tolerance, thermal resilience, and long-term supply chain integrity are non-negotiable design requirements.
FAQ
What is the maximum operating temperature range for the 5962-8872701RA?
The 5962-8872701RA is characterized for operation from –55°C to 125°C, fully compliant with MIL-PRF-38534 Class V environmental screening. This range is verified through temperature cycling, steady-state burn-in, and parametric testing at extremes - ensuring functionality in jet engine bays, desert-deployed vehicles, and low-earth-orbit spacecraft thermal profiles. The 5962-8872701RA maintains specified IOL = 48 mA and tPLH ≤ 14 ns across this full range.
Does the 5962-8872701RA support pin-compatible replacement with commercial-grade SN74ALS640B variants?
No, the 5962-8872701RA is not pin-compatible with commercial SN74ALS640B variants due to fundamental differences in qualification, screening, and marking - though both share identical pinout and electrical behavior. The 5962-8872701RA uses CDIP J packaging qualified to MIL-PRF-38534, while SN74ALS640B typically ships in PDIP N or SOIC DW packages without military screening. PCB layout must account for hermetic seal requirements and thermal mass differences.
What is the purpose of the DIR and OE pins on the 5962-8872701RA?
The DIR (direction) pin controls data flow direction: logic low enables B→A transfer, logic high enables A→B transfer. The OE (output enable) pin is active-low and globally disables all outputs into high-impedance state, isolating both buses. In the 5962-8872701RA, these inputs operate at standard TTL thresholds (VIH = 2.0 V, VIL = 0.8 V) and are internally latched to prevent metastability during asynchronous control transitions.
Is the 5962-8872701RA RoHS-compliant?
The 5962-8872701RA is not RoHS-compliant in its standard configuration, as it uses leaded solder and ceramic packaging consistent with MIL-PRF-38534 Class V requirements. TI documentation specifies "TBD" for eco plan and "Call TI" for lead/ball finish - indicating legacy military construction. For RoHS-compliant alternatives, consider commercial SN74ALS640B-1 variants in green SOIC packages, but note they lack QML qualification and extended temperature rating.
How does the 48 mA IOL rating of the 5962-8872701RA impact system design?
With 48 mA low-level output current per pin, the 5962-8872701RA can directly drive terminated 50-Ω transmission lines, fan out to ≥10 standard TTL loads, or interface with legacy bus terminators without external buffers. This eliminates discrete driver stages, reduces PCB layer count, and improves signal integrity in high-noise military environments - a key advantage confirmed in the 5962-8872701RA datasheet under "recommended operating conditions" for VCC = 4.75–5.25 V.
5962-8872701RA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 54ALS
- Package/Case:
- 20-CDIP (0.300", 7.62mm)
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- Transceiver, Inverting
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 12mA, 12mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 20-CDIP
5962-8872701RA FAQ
1.How can I place an order for 5962-8872701RA through Aetrix?
Please submit a Request for Quotation (RFQ) for 5962-8872701RA 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 5962-8872701RA reliable?
The price and inventory of 5962-8872701RA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5962-8872701RA is usually 5 days.
3.What payment methods are accepted for 5962-8872701RA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5962-8872701RA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5962-8872701RA?
5962-8872701RA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5962-8872701RA 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 5962-8872701RA?
For technical support, including 5962-8872701RA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5962-8872701RA requirements.
6.How does Aetrix verify that 5962-8872701RA is sourced from the original manufacturer or authorized distributors?
All 5962-8872701RA 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 5962-8872701RA meets industry standards.
7.What is the process for return or replacement of 5962-8872701RA?
All 5962-8872701RA units undergo pre-shipment inspection (PSI). If there is an issue with 5962-8872701RA, 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 5962-8872701RA part is unused and in its original packaging.
Return procedure for 5962-8872701RA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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