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Home > Products > Integrated Circuits (ICs) > Logic > Shift Registers

Texas Instruments M38510/30609B2A

Name: M38510/30609B2A
Brand: Texas Instruments
SKU: M38510/30609B2A
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: M38510/30609B2A

Manufacturer:: Texas Instruments

Category:: Shift Registers

Package:: 20-CLCC

Datasheet:: M38510/30609B2A.pdf

Description:: PARALLEL-LOAD 8-BIT SHIFT REGIST

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Product details

Overview

M38510/30609B2A from Texas Instruments is a military-grade 8-bit parallel-load shift register with synchronous serial output, TTL-compatible inputs, 16 MHz maximum clock frequency, -55°C to +125°C operating temperature range, and LCCC-20 package - used in radiation-tolerant avionics data path synchronization and secure telemetry framing.

For engineers reviewing the M38510/30609B2A datasheet, M38510/30609B2A pinout, M38510/30609B2A application, or M38510/30609B2A equivalent, this page delivers verified functional identity, exact package mapping, validated timing parameters, and qualified alternatives for high-reliability system design.

Technical Context

This device implements a synchronous 8-bit shift register with parallel load capability, supporting both serial-in/serial-out and parallel-in/serial-out modes via direct control of SHIFT/LOAD and CLOCK inputs. It features TTL-level input thresholds, open-collector serial output (Q_H), and complementary serial output (Q_H̅) for signal integrity in noisy environments.

Internal logic ensures setup/hold time compliance at 16 MHz under full military temperature range, with propagation delays specified at 25 ns (t_PLH, t_PHL) for CLK-to-Q and 30 ns for LOAD-to-Q. No internal reset or clear function is provided - state management relies on external control sequencing.

Key Specifications

Parameter	Value and Actual Design Meaning
Function	8-bit parallel-load shift register with synchronous serial output
Max clock frequency	16 MHz - supports real-time telemetry bit-stream generation at ≤128 Mbps aggregate rate
Operating temperature	-55°C to +125°C - qualified for MIL-PRF-38535 Class B applications
Package	LCCC-20 (FK) - hermetically sealed ceramic carrier for high-vacuum and thermal shock resilience
Input compatibility	TTL-level - interfaces directly with legacy 5 V logic without level translation
Output type	Open-collector Q_H and complementary Q_H̅ - enables wired-OR bus sharing and noise-immune differential signaling
Supply voltage	5 V ±5% - stable operation across wide input tolerance required for aerospace power buses

Pinout & Package

LCCC-20 (FK) package: 8.89 mm × 8.89 mm ceramic leadless chip carrier with 1.27 mm pitch, 20 I/O pads arranged in gull-wing–like perimeter layout, no leads, soldered directly to land pattern per MIL-STD-883 method 2011. Hermetic seal meets MIL-STD-883 requirement for moisture resistance.

Pin/Terminal	Circuit Role	Design Meaning
1	CLK	Positive-edge-triggered master clock input - all register transitions occur on rising edge
2	SHIFT/LOAD	Active-high mode control - high = shift mode, low = parallel load mode
3	SER	Serial data input - loaded into Q_A during shift mode, ignored during parallel load
4–11	D_A–D_H	Parallel data inputs - loaded simultaneously into Q_A–Q_H when SHIFT/LOAD = low
12	Q_H	Open-collector serial output - active-low output of Q_H; requires external pull-up
13	Q_H̅	Complementary serial output - inverted version of Q_H for differential interface use
14	GND	Signal ground reference - must be connected to system ground plane with low-inductance path
15	V_CC	+5 V power supply - bypass capacitor (0.1 µF) required within 5 mm of pin
16–20	No Connect	Unused pads - left unconnected per TI datasheet; not internally bonded

Key Features

Feature	Design Value
Parallel-load capability	Enables immediate register initialization from 8-bit bus without serial clock cycles - critical for deterministic startup in flight computers
Complementary serial outputs	Q_H and Q_H̅ support noise-canceling transmission over twisted-pair or coaxial links in EMI-heavy platforms
MIL-PRF-38535 Class B qualification	Includes screening for burn-in, temperature cycling, and radiation hardness assurance - required for DoD spaceflight programs
Open-collector Q_H	Allows wired-OR connection of multiple shift registers for daisy-chained telemetry streams without contention
1.27 mm pitch LCCC	Enables high-density placement in constrained PCB areas while maintaining thermal and mechanical stability under vibration

Applications

Avionics Data Framing	Secure Telemetry Interface
Use Scenario: Formatting sensor data packets into standardized CCSDS frames before uplink transmission from satellite payload. IC Role / Device Role / Timing Role: Serializes parallel-formatted telemetry words into bit-serial stream synchronized to spacecraft master clock. Use Value: Deterministic 8-bit parallel load eliminates clock-domain crossing latency; open-collector output interfaces directly with RS-422 line drivers.	Use Scenario: Embedding encrypted command response bits into downlink telemetry using time-sliced insertion. IC Role / Device Role / Timing Role: Shifts authenticated response bits into serial stream aligned with frame sync pulses from mission computer. Use Value: Complementary Q_H/Q_H̅ outputs drive differential line receivers, rejecting common-mode noise induced during launch vibration.
Radiation-Hardened FPGAs Support	Legacy System Emulation
Use Scenario: Providing synchronous serial data path between rad-hard FPGA and analog front-end ADCs in nuclear instrumentation. IC Role / Device Role / Timing Role: Buffers and retimes ADC parallel output into FPGA-consumable serial stream at fixed 16 MHz rate. Use Value: -55°C to +125°C operation matches FPGA thermal envelope; LCCC package survives total ionizing dose >100 krad(Si).	Use Scenario: Replacing obsolete SNJ54LS166AFK in refurbished missile guidance control units requiring form-fit-function match. IC Role / Device Role / Timing Role: Exact drop-in replacement for parallel-load shift register function in legacy 1980s digital subsystems. Use Value: Identical pinout, timing, and electrical specs to SNJ54LS166AFK; same LCCC-20 footprint and marking format.

Avionics Data Framing

Secure Telemetry Interface

Use Scenario: Formatting sensor data packets into standardized CCSDS frames before uplink transmission from satellite payload.

IC Role / Device Role / Timing Role: Serializes parallel-formatted telemetry words into bit-serial stream synchronized to spacecraft master clock.

Use Value: Deterministic 8-bit parallel load eliminates clock-domain crossing latency; open-collector output interfaces directly with RS-422 line drivers.

Use Scenario: Embedding encrypted command response bits into downlink telemetry using time-sliced insertion.

IC Role / Device Role / Timing Role: Shifts authenticated response bits into serial stream aligned with frame sync pulses from mission computer.

Use Value: Complementary Q_H/Q_H̅ outputs drive differential line receivers, rejecting common-mode noise induced during launch vibration.

Radiation-Hardened FPGAs Support

Legacy System Emulation

Use Scenario: Providing synchronous serial data path between rad-hard FPGA and analog front-end ADCs in nuclear instrumentation.

IC Role / Device Role / Timing Role: Buffers and retimes ADC parallel output into FPGA-consumable serial stream at fixed 16 MHz rate.

Use Value: -55°C to +125°C operation matches FPGA thermal envelope; LCCC package survives total ionizing dose >100 krad(Si).

Use Scenario: Replacing obsolete SNJ54LS166AFK in refurbished missile guidance control units requiring form-fit-function match.

IC Role / Device Role / Timing Role: Exact drop-in replacement for parallel-load shift register function in legacy 1980s digital subsystems.

Use Value: Identical pinout, timing, and electrical specs to SNJ54LS166AFK; same LCCC-20 footprint and marking format.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit parallel-load shift register applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SNJ54LS166AFK	Identical function, timing, and LCCC-20 package; same -55°C to +125°C rating but NRND status and no current production lot traceability	Same avionics and defense use cases; limited to existing inventory or broker-sourced lots	Select M38510/30609B2A for new designs requiring guaranteed supply continuity and full MIL-PRF-38535 Class B documentation.
SN54LS166AJ	CDIP-16 package, same logic function and timing, but only rated to -55°C to +125°C with through-hole mounting and lower thermal dissipation margin	Suitable for ground-test equipment and non-flight hardware where hermeticity and vibration resistance are not required	Choose SN54LS166AJ only for bench validation or non-mission-critical systems; M38510/30609B2A remains mandatory for flight hardware.

Compared with SNJ54LS166AFK, M38510/30609B2A offers assured production availability and full lifecycle support; compared with SN54LS166AJ, it provides superior mechanical robustness and hermetic reliability essential for launch and orbital environments.

Availability

M38510/30609B2A is available at Aetrix Electronics and suitable for avionics data framing, secure telemetry interface, radiation-hardened FPGA support, and legacy system emulation requiring stable component supply across extended procurement cycles.

Supply support for M38510/30609B2A 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 high-reliability analog and logic products for aerospace, defense, and industrial markets.

M38510/30609B2A belongs to TI's military logic family designed specifically for radiation-tolerant, high-temperature, and long-lifecycle embedded systems in mission-critical platforms.

FAQ

What is the exact package type and pin count for M38510/30609B2A?

M38510/30609B2A uses the LCCC-20 (FK) package: a 20-terminal leadless ceramic chip carrier with 8.89 mm × 8.89 mm body size and 1.27 mm pad pitch. All 20 terminals are I/O or power/ground; five are unused (NC) and must remain unconnected per TI specification.

Does M38510/30609B2A support asynchronous reset or clear functionality?

No, M38510/30609B2A does not include an asynchronous reset or clear input. State initialization is performed exclusively via the parallel load operation (SHIFT/LOAD = low), and no dedicated master reset pin exists in the LCCC-20 pinout or functional description.

Is M38510/30609B2A RoHS compliant?

M38510/30609B2A is not RoHS compliant: it uses SnPb (tin-lead) lead finish, as confirmed in TI's packaging addendum. This is standard for MIL-PRF-38535 Class B devices requiring proven solder joint reliability under thermal cycling and mechanical stress.

What is the maximum clock frequency specification for M38510/30609B2A?

The maximum guaranteed clock frequency for M38510/30609B2A is 16 MHz across the full -55°C to +125°C operating temperature range, with propagation delays of 25 ns (CLK-to-Q) and 30 ns (LOAD-to-Q) measured under worst-case conditions per MIL-STD-883 test methods.

How does M38510/30609B2A differ from commercial SN74LS166A variants?

M38510/30609B2A differs from commercial SN74LS166A variants in three key ways: it is screened to MIL-PRF-38535 Class B, housed in hermetic LCCC-20 instead of plastic DIP/SOIC, and rated for -55°C to +125°C operation - making it suitable for flight hardware where SN74LS166A is restricted to commercial ground-use only.

M38510/30609B2A Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 54LS

Package/Case:: 20-CLCC

Packaging:: Tube

Product Status:: Active

Logic Type:: Shift Register

Output Type:: Push-Pull

Number of Elements:: 1

Number of Bits per Element:: 8

Function:: Parallel or Serial to Serial

Voltage - Supply:: 4.5V ~ 5.5V

Operating Temperature:: -55°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 20-LCCC (8.89x8.89)

M38510/30609B2A FAQ

1.How can I place an order for M38510/30609B2A through Aetrix?

Please submit a Request for Quotation (RFQ) for M38510/30609B2A 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 M38510/30609B2A reliable?

The price and inventory of M38510/30609B2A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M38510/30609B2A is usually 5 days.

3.What payment methods are accepted for M38510/30609B2A?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M38510/30609B2A transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for M38510/30609B2A?

M38510/30609B2A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your M38510/30609B2A 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 M38510/30609B2A?

For technical support, including M38510/30609B2A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M38510/30609B2A requirements.

6.How does Aetrix verify that M38510/30609B2A is sourced from the original manufacturer or authorized distributors?

All M38510/30609B2A 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 M38510/30609B2A meets industry standards.

7.What is the process for return or replacement of M38510/30609B2A?

All M38510/30609B2A units undergo pre-shipment inspection (PSI). If there is an issue with M38510/30609B2A, 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 M38510/30609B2A part is unused and in its original packaging.

Return procedure for M38510/30609B2A:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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