My Inquiry
My Account
Texas Instruments JM38510/30906B2A
- Part No.:
- JM38510/30906B2A
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- -
- Datasheet:
-
JM38510/30906B2A.pdf
- Description:
- 54LS257B QUADRUPLE 2-LINE TO 1-L
- Quantity:
- Payment:
- Shipping:
Inventory:1,188
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
JM38510/30906B2A from Texas Instruments is a military-grade quadruple 2-line to 1-line data selector/multiplexer IC, implementing four independent 2:1 multiplexers with common select and enable control, operating across –55°C to +125°C, featuring TTL-compatible inputs and outputs, and designed for high-reliability aerospace and defense digital logic systems.
For engineers reviewing the JM38510/30906B2A datasheet, JM38510/30906B2A pinout, JM38510/30906B2A application, or JM38510/30906B2A equivalent, this device serves as a radiation-tolerant, QML-qualified signal routing component in mission-critical avionics, secure communications, and hardened embedded controllers where deterministic timing and extended temperature operation are mandatory.
Technical Context
The JM38510/30906B2A implements four identical 2:1 multiplexer channels sharing one active-low output enable (G̅) and one common select (S) input, enabling simultaneous selection of either A or B inputs per channel to drive Y outputs. Each channel operates with standard TTL voltage thresholds and fan-out capability.
It belongs to the SN54LS257B family and shares functional equivalence with SN54LS258B (inverted output version), but differs in output polarity and internal gating structure-JM38510/30906B2A provides non-inverted outputs, while SN54LS258B delivers inverted outputs. Propagation delay is specified at 20 ns typical (max 35 ns) under worst-case military conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | Quadruple 2:1 data selector/multiplexer with common select and enable |
| Supply Voltage | VCC = 4.5 V to 5.5 V - ensures compatibility with legacy 5 V TTL systems and stable operation under voltage transients |
| Operating Temperature | –55°C to +125°C - qualified for extended-range military and space applications without derating |
| Propagation Delay | tPD = 35 ns max (A/B to Y, G̅ to Y) - guarantees predictable timing in synchronous digital control paths |
| Output Drive | IOH/IOL = –0.4 mA / 8 mA - supports direct interfacing with standard TTL loads without buffering |
| Input Compatibility | TTL-level inputs (VIL ≤ 0.8 V, VIH ≥ 2.0 V) - enables seamless integration into mixed-logic subsystems |
Pinout & Package
LCCC (Leadless Chip Carrier) package, FK drawing, 20-pin ceramic body with solderable metallized perimeter terminations and hermetic sealing for high-reliability environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 16, 17 | Data Inputs (A1–A4, B1–B4) | Twelve dedicated inputs - four pairs (An, Bn) feeding each of the four 2:1 multiplexers |
| 3, 6, 9, 12, 15, 18 | Outputs (Y1–Y4), Select (S), Enable (G̅) | Six terminals: four non-inverted multiplexer outputs plus shared S (select) and active-low G̅ (enable) |
| 19, 20 | VCC, GND | Dual power supply pins placed diagonally for low-inductance decoupling in high-noise environments |
Key Features
| Feature | Design Value |
|---|---|
| QML Class V qualification | Fully compliant with MIL-PRF-38535 requirements for high-reliability microcircuits used in defense and space programs |
| Common select & enable control | Single S and G̅ line govern all four multiplexers - reduces PCB routing complexity and control logic overhead |
| Non-inverted outputs | Yn = (An • S̅) + (Bn • S) - preserves input logic polarity, simplifying downstream combinational logic design |
| Hermetic LCCC packaging | FK package provides moisture resistance, thermal stability, and mechanical robustness essential for long-duration missions |
| TTL-compatible interface | Direct drop-in replacement for legacy LS-TTL multiplexers without level-shifting circuitry |
Applications
| Avionics Data Routing | Secure Communication Switching |
|---|---|
|
Use Scenario: Selecting between redundant sensor inputs (e.g., inertial measurement unit A/B) in flight control computers. IC Role / Device Role / Timing Role: Quad 2:1 multiplexer providing failover path selection under software or watchdog control with deterministic propagation delay. Use Value: Enables real-time switching between primary and backup data streams without introducing jitter or metastability in safety-critical loops. |
Use Scenario: Routing encrypted vs. plaintext data paths in cryptographic modules based on security mode configuration. IC Role / Device Role / Timing Role: Signal selector isolating sensitive signal domains while maintaining strict timing alignment across parallel channels. Use Value: Prevents cross-talk between security domains using hardware-enforced path separation, meeting TEMPEST-level isolation requirements. |
| Hardened Telemetry Interface | Mission Computer I/O Multiplexing |
|
Use Scenario: Consolidating telemetry signals from multiple subsystems (power, thermal, payload) onto a shared downlink bus. IC Role / Device Role / Timing Role: Time-sliced data selector synchronized to master telemetry frame clock for deterministic sampling order. Use Value: Reduces interconnect count and connector pin count while preserving signal integrity over wide temperature excursions. |
Use Scenario: Managing peripheral address/data bus access between CPU, DMA controller, and memory-mapped I/O registers. IC Role / Device Role / Timing Role: Bus resource arbitrator selecting between competing data sources under control of decode logic. Use Value: Eliminates need for discrete gate arrays or CPLDs in legacy 8/16-bit mission computer architectures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar data selector/multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SNJ54LS257BFK | Same function, identical LCCC-FK package and pinout, but rated for –55°C to +125°C with different screening and traceability documentation | Qualified under earlier revision of MIL-PRF-38535; lacks updated QML-V certification documentation required for new DoD contracts | Select SNJ54LS257BFK only for legacy sustainment where full QML-V compliance is not mandated |
| JM38510/07906BEA | Same logic function but in 16-pin CDIP-J package; lacks two pins for separate enable per channel group and uses different pin mapping | Requires PCB redesign due to 16-pin DIP footprint versus 20-pin LCCC; suitable only when board space and hermeticity are secondary concerns | Choose JM38510/07906BEA for cost-sensitive ground-based test equipment where LCCC handling and rework are impractical |
Compared with SNJ54LS257BFK and JM38510/07906BEA, JM38510/30906B2A offers verified QML-V compliance, optimized LCCC thermal performance, and guaranteed availability under current DoD sourcing protocols-making it the preferred choice for new flight hardware designs requiring full pedigree traceability.
Availability
JM38510/30906B2A is available at Aetrix Electronics and suitable for avionics data routing, secure communication switching, hardened telemetry interfaces, and mission computer I/O multiplexing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for JM38510/30906B2A 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.
JM38510/30906B2A belongs to TI's military logic product line, engineered to meet stringent MIL-PRF-38535 Class V requirements for use in launch vehicles, satellites, and tactical platforms where failure is not an option.
FAQ
What is the logic function implemented by JM38510/30906B2A?
JM38510/30906B2A implements four independent 2-line to 1-line data selectors/multiplexers with a common select (S) input and a common active-low output enable (G̅). Each channel outputs Yn = (An • S̅) + (Bn • S), delivering non-inverted logic. This function is identical to the SN54LS257B variant and distinct from the inverted-output SN54LS258B.
Does JM38510/30906B2A support 3.3 V operation?
No, JM38510/30906B2A is specified only for 4.5 V to 5.5 V operation and is not compatible with 3.3 V logic families. Its input thresholds and output drive characteristics are optimized for standard TTL levels, and operation below 4.5 V may result in undefined behavior or failure to meet timing specifications.
Is JM38510/30906B2A pin-compatible with commercial SN74LS257B devices?
No, JM38510/30906B2A is not pin-compatible with commercial SN74LS257B devices. It uses a 20-pin LCCC-FK package, whereas SN74LS257B is offered in 16-pin PDIP, SOIC, or CDIP packages. The pin count, layout, and terminal assignment differ fundamentally between these form factors.
What is the maximum clock frequency supported by JM38510/30906B2A?
JM38510/30906B2A does not operate as a clocked device-it is purely combinational logic with no internal clock. Its usable switching rate is limited by propagation delay (35 ns max) and system-level setup/hold timing; in practice, it supports data rates up to approximately 10 MHz in well-designed synchronous circuits with adequate margin.
Where can I find the official datasheet for JM38510/30906B2A?
The official datasheet for JM38510/30906B2A is documented in Texas Instruments' SDLS148 datasheet (October 1976, revised March 1988), which covers the entire SN54LS257B/SN54LS258B family. TI's current product folder and QML documentation confirm JM38510/30906B2A as a qualified LCCC variant of that specification.
JM38510/30906B2A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- -
- Circuit:
- -
- Independent Circuits:
- -
- Current - Output High, Low:
- -
- Voltage Supply Source:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
JM38510/30906B2A FAQ
1.How can I place an order for JM38510/30906B2A through Aetrix?
Please submit a Request for Quotation (RFQ) for JM38510/30906B2A 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 JM38510/30906B2A reliable?
The price and inventory of JM38510/30906B2A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for JM38510/30906B2A is usually 5 days.
3.What payment methods are accepted for JM38510/30906B2A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for JM38510/30906B2A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for JM38510/30906B2A?
JM38510/30906B2A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your JM38510/30906B2A 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 JM38510/30906B2A?
For technical support, including JM38510/30906B2A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your JM38510/30906B2A requirements.
6.How does Aetrix verify that JM38510/30906B2A is sourced from the original manufacturer or authorized distributors?
All JM38510/30906B2A 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 JM38510/30906B2A meets industry standards.
7.What is the process for return or replacement of JM38510/30906B2A?
All JM38510/30906B2A units undergo pre-shipment inspection (PSI). If there is an issue with JM38510/30906B2A, 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 JM38510/30906B2A part is unused and in its original packaging.
Return procedure for JM38510/30906B2A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
JM38510/30906B2A Tags
-
SN74HC138DR
Texas Instruments
-
TC7SB3157CFU,LF(CT
Toshiba Semiconductor and Storage
-
74CBTLV3257PW,118
Nexperia USA Inc.
-
SN74CBTLV3257PWR
Texas Instruments
-
74CBTLV3257GUX
Nexperia USA Inc.
-
74HC154BQ,118
Nexperia USA Inc.
-
P3S0200GMX
NXP USA Inc.
-
SN74CB3Q3245PWR
Texas Instruments
-
SN74CB3Q3257RGYR
Texas Instruments
-
TCA9543APWR
Texas Instruments
-
TCA9546APWR
Texas Instruments
-
SN74HC138N
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
