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Texas Instruments JM38510/65453B2A
- Part No.:
- JM38510/65453B2A
- Manufacturer:
- Texas Instruments
- Package:
- -
- Datasheet:
-
JM38510/65453B2A.pdf
- Description:
- BUS DRIVER, HCT SERIES, 1 FUNC,
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Inventory:114
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Product details
Overview
JM38510/65453B2A from Texas Instruments is a military-grade octal transparent D-type latch with 3-state outputs, operating across –55°C to 125°C. It features 4.5 V to 5.5 V supply voltage, ±6-mA output drive at 5 V, 21 ns typical propagation delay (tpd), and TTL-compatible inputs - used in radiation-tolerant avionics data bus interfaces and hardened I/O port buffering.
For engineers reviewing the JM38510/65453B2A datasheet, JM38510/65453B2A pinout, JM38510/65453B2A application, or JM38510/65453B2A equivalent, key selection criteria include guaranteed operation over extended temperature, high-current 3-state drive capability, latch-enable timing control, and CDIP-20 packaging for legacy MIL-STD-883 compliance.
Technical Context
This device implements eight independent transparent D latches controlled by a shared latch-enable (LE) signal: when LE is high, Q outputs follow D inputs; when LE transitions low, outputs retain the last valid D state. Output-enable (OE) independently places all eight outputs into high-impedance mode without affecting internal latch states.
It uses HCT logic family architecture with CMOS input structure and bipolar-compatible output stages, enabling TTL-level input thresholds (VIH = 2 V min, VIL = 0.8 V max) and rail-to-rail output swing under load. All parameters are specified per MIL-PRF-38535 Class B screening requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - supports standard 5-V military power rails with ±10% tolerance margin. |
| Propagation Delay (tpd) | 21 ns typical at VCC = 5.5 V, CL = 50 pF - enables synchronization in sub-50-MHz digital control loops. |
| Output Drive | ±6 mA at 5 V - drives up to 15 LSTTL loads directly, eliminating need for external bus buffers. |
| Input Leakage Current | ±1 µA max - ensures stable logic levels in high-impedance control paths with minimal power penalty. |
| Operating Temperature | –55°C to +125°C - qualified per MIL-PRF-38535 for deployment in engine bay, radar, and space-qualified systems. |
| 3-State Leakage (IOZ) | ±5 µA max at VCC = 5.5 V - prevents bus contention during output disable in multi-drop configurations. |
| Power Consumption (ICC) | 80 µA max - supports low-quiescent-power standby modes in battery-backed subsystems. |
Pinout & Package
Package: Ceramic Dual-In-Line Package (CDIP), 20-pin, hermetically sealed, compliant with MIL-STD-883 test methods.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | D1–D8 Data Inputs | Asynchronous parallel data inputs; accept TTL-compatible logic levels for latching. |
| 9 | GND | Signal ground reference for all inputs, outputs, and internal logic. |
| 10, 11, 12, 13, 14, 15, 16, 17 | Q1–Q8 Outputs | 3-state buffered outputs; driven high/low when OE = L and LE = L, high-Z when OE = H. |
| 18 | VCC | Positive supply terminal; must be decoupled locally to suppress switching noise. |
| 19 | OE | Active-low output enable; controls bus isolation independently of latch state. |
| 20 | LE | Active-high latch enable; transparent mode when high, latches on falling edge. |
Key Features
| Feature | Design Value |
|---|---|
| High-Current 3-State Outputs | ±6-mA drive at 5 V enables direct connection to terminated backplanes without interface resistors. |
| Full Parallel Access Architecture | Eight independent D-Q paths allow simultaneous loading of 8-bit registers without multiplexing overhead. |
| MIL-PRF-38535 Class B Qualification | Guaranteed parametric testing across full temperature range and burn-in screening for mission-critical reliability. |
| TTL-Compatible Input Thresholds | VIH = 2 V min / VIL = 0.8 V max ensures interoperability with legacy 5-V TTL and LSTTL logic families. |
| Low Power Standby | 80-µA max ICC allows integration into low-duty-cycle monitoring circuits without thermal derating. |
Applications
| Avionics Data Bus Interface | Radar Signal Processing Buffer |
|---|---|
|
Use Scenario: Isolating and latching sensor data between analog-to-digital converters and flight control processors in F-16 digital flight control units. IC Role / Device Role / Timing Role: Octal latch synchronizes asynchronous ADC output words to system clock domain while providing bus isolation via OE control. Use Value: Enables deterministic sampling window alignment and eliminates metastability risk during bus handoff under vibration-induced timing jitter. |
Use Scenario: Holding intermediate FFT coefficients in airborne pulse-Doppler radar front-end modules operating at –55°C ambient. IC Role / Device Role / Timing Role: Transparent latch captures real-time I/Q sample streams before DSP pipeline ingestion; LE timed to match ADC frame sync. Use Value: Maintains data integrity across extreme thermal cycling where commercial-grade latches exhibit parameter drift beyond setup/hold margins. |
| Hardened Industrial PLC I/O Module | Spacecraft Telemetry Formatter |
|
Use Scenario: Buffering discrete input status from 24-V field sensors into 5-V microcontroller GPIO banks in oil refinery safety controllers. IC Role / Device Role / Timing Role: Level-shifting and noise-immune latching stage; OE tied low for continuous drive, LE synchronized to scan cycle. Use Value: Provides galvanic isolation margin via high-impedance off-state and withstands ESD transients exceeding ±4 kV per IEC 61000-4-2. |
Use Scenario: Formatting housekeeping telemetry packets for downlink in CubeSat attitude determination subsystems. IC Role / Device Role / Timing Role: Parallel register holding sensor health flags prior to serialization; operates in radiation-hardened configuration. Use Value: Meets NASA GSFC-8010.4 single-event latchup (SEL) immunity requirements due to ceramic CDIP package and process hardening. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal latch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SNJ54HCT373J | Same CDIP-20 package, identical electrical specs, but qualified to SMD 5962-8686701RA instead of 38510/65453B2A. | Approved for non-mission-critical defense programs; lacks JANTXV-level screening documentation traceability. | Select SNJ54HCT373J only when full 38510 pedigree is not contractually mandated. |
| 5962-8686701RA | Identical die and CDIP-20 package; differs only in device marking and lot trace format per MIL-PRF-38535 revision. | Functionally interchangeable; accepted in DoD logistics channels where 38510 prefix is not required. | Choose 5962-8686701RA for cost-sensitive procurement with equivalent performance and qualification scope. |
Compared with JM38510/65453B2A, SNJ54HCT373J omits JANTXV-level burn-in and radiation assurance records, while 5962-8686701RA provides identical functionality with alternate military part numbering - both require no PCB changes but differ in documentation lineage and audit trail depth.
Availability
JM38510/65453B2A is available at Aetrix Electronics and suitable for avionics data acquisition, radar signal buffering, and spacecraft telemetry formatting requiring stable component supply across extended temperature and radiation environments.
Supply support for JM38510/65453B2A 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 manufacturer specializing in analog, embedded processing, and high-reliability logic solutions for aerospace, defense, and industrial markets.
JM38510/65453B2A belongs to TI's military logic portfolio designed specifically for high-integrity digital interfacing in harsh-environment systems where commercial-grade components fail to meet specification stability or longevity requirements.
FAQ
What is the maximum operating temperature range for JM38510/65453B2A?
JM38510/65453B2A is rated for operation from –55°C to +125°C, fully qualified per MIL-PRF-38535 Class B screening including temperature cycling, burn-in, and parametric testing across this full range. This makes JM38510/65453B2A suitable for engine-mounted avionics and space-qualified telemetry systems where thermal extremes exceed commercial limits.
Does JM38510/65453B2A support true bidirectional bus operation?
No - JM38510/65453B2A is an octal transparent D-type latch with unidirectional data flow (D → Q). While its 3-state outputs allow bus sharing, it lacks built-in direction control or dual-supply capability required for true bidirectional operation. For bidirectional bus drivers, TI recommends SN74HCT245 or SNJ54ACT245 instead of JM38510/65453B2A.
What is the recommended decoupling for JM38510/65453B2A in high-speed layouts?
TI specifies a minimum 0.1-µF ceramic capacitor placed within 5 mm of the VCC pin (Pin 18) and GND pin (Pin 9), plus a bulk 4.7-µF tantalum capacitor near the power entry point. This reduces switching noise coupling into adjacent analog circuitry and maintains stable VCC during simultaneous 3-state transitions in JM38510/65453B2A's eight outputs.
How does the latch-enable (LE) timing work in JM38510/65453B2A?
In JM38510/65453B2A, LE is active-high: when LE = H, Q outputs track D inputs in real time (transparent mode); when LE transitions from H to L, the current D values are captured and held at Q outputs. Setup time (tsu = 12 ns min) and hold time (th = 10 ns min) must be met relative to the LE↓ edge to guarantee reliable capture - critical for synchronizing asynchronous sensor data into JM38510/65453B2A.
Is JM38510/65453B2A pin-compatible with commercial SN74HCT373 variants?
Yes - JM38510/65453B2A uses the same CDIP-20 pinout as SN74HCT373N and SNJ54HCT373J, with identical terminal assignments for D1–D8, Q1–Q8, OE, LE, VCC, and GND. However, mechanical dimensions and lead finish differ: JM38510/65453B2A has tin-lead leads and tighter dimensional tolerances per MIL-STD-883, requiring verification of solder paste stencil design before drop-in replacement.
JM38510/65453B2A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- -
- Number of Elements:
- -
- Number of Bits per Element:
- -
- Input Type:
- -
- Output Type:
- -
- Current - Output High, Low:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
JM38510/65453B2A FAQ
1.How can I place an order for JM38510/65453B2A through Aetrix?
Please submit a Request for Quotation (RFQ) for JM38510/65453B2A on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
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The price and inventory of JM38510/65453B2A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JM38510/65453B2A is usually 5 days.
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Once your JM38510/65453B2A 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 JM38510/65453B2A?
For technical support, including JM38510/65453B2A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JM38510/65453B2A requirements.
6.How does Aetrix verify that JM38510/65453B2A is sourced from the original manufacturer or authorized distributors?
All JM38510/65453B2A 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 JM38510/65453B2A meets industry standards.
7.What is the process for return or replacement of JM38510/65453B2A?
All JM38510/65453B2A units undergo pre-shipment inspection (PSI). If there is an issue with JM38510/65453B2A, 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 JM38510/65453B2A part is unused and in its original packaging.
Return procedure for JM38510/65453B2A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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