Texas Instruments M38510/01203BEA

Overview

M38510/01203BEA from Texas Instruments is a retriggerable monostable multivibrator IC in the 54LS family, configured as a dual one-shot with independent A/B inputs and Q/Q̅ outputs. It operates over –55°C to +125°C, supports TTL-compatible input thresholds, delivers ±8 mA output drive, and features complementary outputs for timing control in military-grade digital systems.

For engineers reviewing the M38510/01203BEA datasheet, M38510/01203BEA pinout, M38510/01203BEA application, or M38510/01203BEA equivalent, this device serves critical pulse shaping, debouncing, and delay generation functions where extended temperature range and radiation-tolerant packaging are required - especially in avionics, missile guidance, and space-qualified subsystems.

Technical Context

The M38510/01203BEA implements two independent retriggerable monostable multivibrators in a single 16-pin CDIP (J) package. Each section accepts active-low trigger inputs (A̅, B̅), features clear (CLR̅), and produces non-inverted (Q) and inverted (Q̅) outputs with propagation delays under 45 ns at VCC = 5 V.

Timing is externally set via RC networks connected to C_EXT and R_EXT pins per section, enabling adjustable pulse widths from ~30 ns to >10 s. The device uses bipolar TTL logic, requires no external clock, and maintains stable operation across its full military temperature range without derating.

Key Specifications

Pinout & Package

Package: Ceramic Dual In-Line Package (CDIP), 16-pin, J suffix, 0.300-inch wide body, SNPB (tin-lead) finish, non-RoHS compliant, moisture sensitivity level not applicable.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar retriggerable monostable multivibrator applications.

Compared with SNJ54LS123J and 5962-7603901VEA, the M38510/01203BEA offers identical electrical behavior and packaging, with differentiation limited to part-numbering convention and certification documentation scope - all three are electrically and mechanically interchangeable in deployed systems.

Availability

M38510/01203BEA is available at Aetrix Electronics and suitable for avionics timing control, radar pulse shaping, and missile guidance logic requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for M38510/01203BEA 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 and embedded processing technologies, with decades of leadership in high-reliability military and aerospace ICs.

The M38510/01203BEA belongs to TI's 54LS logic family - designed specifically for ruggedized digital timing applications demanding guaranteed operation across extreme temperatures and radiation environments.

FAQ

What is the maximum operating temperature for M38510/01203BEA?

The M38510/01203BEA is rated for continuous operation from –55°C to +125°C. This extended temperature range is verified per MIL-PRF-38535 Class B screening and applies to all electrical parameters in the SDLS043 datasheet. No derating is required within this span, making M38510/01203BEA suitable for engine bay, avionics bay, and space-qualified thermal environments.

Does M38510/01203BEA support retriggering during an active output pulse?

Yes, M38510/01203BEA is explicitly designed as a retriggerable monostable multivibrator. A new trigger applied to either A̅ or B̅ input while the output is high will restart the timing cycle from that instant - extending the pulse width without requiring the output to return low first. This behavior is confirmed in the functional description and timing diagrams of the SDLS043 datasheet for M38510/01203BEA.

What package type does M38510/01203BEA use, and is it RoHS-compliant?

M38510/01203BEA uses a 16-pin Ceramic Dual In-Line Package (CDIP-J) with tin-lead (SNPB) lead finish. It is not RoHS-compliant due to the leaded finish and ceramic construction, consistent with MIL-STD-883 requirements. The package is hermetically sealed and rated for high-reliability, low-outgassing applications where RoHS exemptions apply.

Can M38510/01203BEA replace SN74LS123N in existing designs?

No - M38510/01203BEA is not a drop-in replacement for SN74LS123N. While functionally similar, M38510/01203BEA operates over –55°C to +125°C, uses CDIP packaging, and requires different PCB footprint, thermal management, and qualification documentation. SN74LS123N is commercial-grade (0°C to +70°C), PDIP-packaged, and RoHS-compliant. Direct substitution would require layout, thermal, and compliance validation.

What are the recommended external timing components for M38510/01203BEA?

For reliable operation, M38510/01203BEA requires external R_EXT and C_EXT per section, connected between pins 6–7 (Section 1) and 14–15 (Section 2). TI recommends metal-film resistors (1% tolerance) and NP0/C0G ceramic capacitors for stability. Typical values range from 1 kΩ/100 pF (≈30 ns pulse) to 10 MΩ/10 µF (>10 s pulse); exact selection must follow the t_W = 0.33 × R_EXT × C_EXT formula in SDLS043.