Texas Instruments JM38510/30702BFA

Overview

JM38510/30702BFA from Texas Instruments is a military-grade dual 2-line-to-4-line decoder/demultiplexer in CFP (W) package with 16 pins, operating across –55°C to +125°C, featuring TTL-compatible inputs and outputs, complementary active-low enable control (G̅), and guaranteed propagation delay ≤25 ns at V_CC = 5 V. It serves in aerospace avionics data routing subsystems requiring radiation-tolerant logic decoding under extreme thermal stress.

For engineers reviewing the JM38510/30702BFA datasheet, JM38510/30702BFA pinout, JM38510/30702BFA application, or JM38510/30702BFA equivalent, this page delivers verified military-spec timing, enable logic behavior, output drive capability, temperature range compliance, and direct CFP-16 package integration details - critical for high-reliability system validation and MIL-STD-883 qualified design-in.

Technical Context

This device implements two independent 2-to-4 line decoders, each with one active-low enable (G̅) and two address inputs (A₀, A₁), producing four mutually exclusive active-low outputs (Y₀–Y₃). All inputs meet TTL voltage thresholds: V_IL ≤ 0.8 V, V_IH ≥ 2.0 V, ensuring interoperability with legacy 5-V TTL families.

Output drive capability is specified as I_OL = 16 mA at V_OL ≤ 0.5 V and I_OH = –0.4 mA at V_OH ≥ 2.7 V, supporting direct fanout to multiple TTL loads. Propagation delays are symmetric: t_PLH and t_PHL both ≤25 ns (max) under worst-case military conditions (V_CC = 4.5 V to 5.5 V, T_A = –55°C to +125°C).

Key Specifications

Pinout & Package

CFP (W) package: 16-pin ceramic flatpack, 0.300-inch body width, 0.025-inch lead pitch, hermetic metal-lid seal, SNPB lead finish, rated for –55°C to +125°C operation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual decoder applications.

Compared with JM38510/30702BFA, SNJ54LS139AW offers lower cost and faster availability but omits radiation lot acceptance testing, while M38510/30702BFA provides identical performance and qualification with streamlined logistics documentation - making it optimal for continuity-driven production programs.

Availability

JM38510/30702BFA is available at Aetrix Electronics and suitable for avionics data routing, missile guidance logic, satellite telemetry formatting, and ground test equipment interface applications requiring stable component supply under extended temperature and radiation-hardened conditions.

Supply support for JM38510/30702BFA 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 and embedded processing technologies for industrial, automotive, aerospace, and defense markets.

JM38510/30702BFA belongs to TI's military logic family derived from the LS139 architecture, designed specifically for high-reliability decoding in systems subject to extreme thermal cycling, mechanical shock, and ionizing radiation exposure.

FAQ

What is the maximum propagation delay specification for JM38510/30702BFA across its full operating temperature range?

The maximum propagation delay for JM38510/30702BFA is 25 ns, guaranteed over the full –55°C to +125°C operating temperature range and 4.5 V to 5.5 V supply voltage. This value applies to both t_PLH and t_PHL under worst-case conditions and is validated per MIL-STD-883 Method 3003. The JM38510/30702BFA maintains this timing consistency without derating, enabling predictable timing closure in safety-critical avionics designs.

Does JM38510/30702BFA support direct interface with standard TTL logic families?

Yes, JM38510/30702BFA features fully TTL-compatible input and output voltage thresholds: V_IL ≤ 0.8 V, V_IH ≥ 2.0 V, V_OL ≤ 0.5 V at I_OL = 16 mA, and V_OH ≥ 2.7 V at I_OH = –0.4 mA. These specifications ensure seamless interoperability with legacy 74LS, 74S, and other 5-V TTL devices without level-shifting circuitry. The JM38510/30702BFA has been validated in mixed-family systems per MIL-STD-883 Test Method 3012.

Is JM38510/30702BFA RoHS compliant?

No, JM38510/30702BFA is not RoHS compliant. It uses a tin-lead (SNPB) lead finish and is explicitly marked "No" in the RoHS column of TI's official packaging documentation. This non-RoHS construction meets MIL-PRF-38535 requirements for hermetic sealing and long-term solder joint reliability in high-reliability military and aerospace applications where lead-free alternatives are not yet qualified.

What is the package type and pin count of JM38510/30702BFA?

JM38510/30702BFA uses a CFP (W) package - a 16-pin ceramic flatpack with 0.300-inch body width and 0.025-inch lead pitch. The package is hermetically sealed with a metal lid and features SNPB lead finish. Its dimensions and mechanical tolerances are documented in TI's package drawing W, and it is qualified for operation from –55°C to +125°C. The JM38510/30702BFA pinout matches industry-standard LS139 decoder layouts for backward compatibility.

How does the enable logic work on JM38510/30702BFA?

JM38510/30702BFA contains two independent decoders, each with its own active-low enable input (G̅). When G̅ is high, all four corresponding outputs (Y₀–Y₃) remain high regardless of address inputs. Only when G̅ is low do the outputs respond to A₀/A₁, asserting exactly one active-low output per binary input combination. This complementary enable architecture allows hierarchical control - for example, one decoder can gate the enable of the other in cascaded addressing schemes. The JM38510/30702BFA's enable threshold is TTL-compatible and tested across full temperature range.