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Texas Instruments M38510/32503BRA
- Part No.:
- M38510/32503BRA
- Manufacturer:
- Texas Instruments
- Category:
- Flip Flops
- Package:
- 20-CDIP (0.300", 7.62mm)
- Datasheet:
-
M38510/32503BRA.pdf
- Description:
- OCTAL D-TYPE EDGE TRIGGERED FLIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,975
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Product details
Overview
M38510/32503BRA from Texas Instruments is a military-grade octal D-type transparent latch with 3-state bus-driving outputs, designed for high-reliability data latching in aerospace and defense systems operating from –55°C to 125°C. It features buffered control inputs, full parallel access, and a clock-enable input with hysteresis for noise rejection. The device directly drives capacitive or low-impedance buses without interface components.
For engineers reviewing the M38510/32503BRA datasheet, M38510/32503BRA pinout, M38510/32503BRA application, or M38510/32503BRA equivalent, this part serves as a drop-in replacement for SN54LS373J in legacy MIL-PRF-38535-compliant designs requiring verified radiation-hardened logic, deterministic timing at temperature extremes, and direct bus interfacing in avionics data acquisition subsystems.
Technical Context
This device implements eight independent transparent D-type latches with non-inverting 3-state outputs. Latch enable (C) is active-high and synchronous-Q follows D while C is high; outputs freeze when C transitions low. Output control (OC) operates independently to place all outputs in high-impedance state without affecting internal latch states.
The input structure uses P-N-P transistor inputs to reduce DC loading on data lines, and the OC and C inputs include Schmitt-trigger buffering for improved AC/DC noise immunity. All parameters are fully tested per MIL-PRF-38535 requirements across the full –55°C to +125°C range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | Octal transparent D-type latch with 3-state outputs |
| Supply Voltage | 4.5 V to 5.5 V - supports standard 5 V military power rails with margin |
| Operating Temperature | –55°C to +125°C - qualified for extended-range aerospace and defense platforms |
| Max Clock Frequency | 35 MHz at VCC = 5 V, CL = 45 pF - enables real-time data capture in high-speed telemetry interfaces |
| Output Drive | IOL = 24 mA, IOH = –2.6 mA - sufficient to drive terminated 50 Ω transmission lines or multiple TTL loads |
| Propagation Delay | tPLH/tPHL ≤ 18 ns (data-to-Q), tPZH/tPZL ≤ 28 ns (OC-to-Q) - ensures tight timing budgets in synchronized bus architectures |
| Input Hysteresis | ≈400 mV on C and OC inputs - rejects noise spikes common in electrically noisy vehicle platforms |
Pinout & Package
Package: 20-pin Ceramic Dual-In-Line Package (CDIP-J), hermetically sealed, lead finish SNPB, RoHS-exempt, MIL-STD-883 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OC (Output Control) | Active-low 3-state enable; places all Q outputs in high-Z regardless of latch state |
| 2–9 | D1–D8 (Data Inputs) | Asynchronous parallel data inputs; P-N-P structure minimizes loading on upstream drivers |
| 10 | GND | Signal ground reference for all inputs, outputs, and internal logic |
| 11–18 | Q1–Q8 (Outputs) | Non-inverting 3-state outputs; capable of sourcing/sinking 24 mA/2.6 mA |
| 19 | C (Clock/Enable) | Active-high transparent latch control; Q follows D while C = H; latches on C ↓ |
| 20 | VCC | Positive supply terminal; must be decoupled locally for noise-sensitive operation |
Key Features
| Feature | Design Value |
|---|---|
| 3-State Bus Driving | Enables direct connection to shared data buses without pull-ups, level shifters, or isolation buffers |
| Full Parallel Access | All eight D inputs and Q outputs accessible simultaneously for burst-mode data capture or register file expansion |
| Buffered Control Inputs | C and OC inputs include Schmitt-triggering, improving noise immunity by ≈400 mV hysteresis |
| P-N-P Input Structure | Reduces DC loading on data lines, preserving signal integrity in multi-drop configurations |
| MIL-PRF-38535 Compliance | All electrical parameters tested across full temperature range; traceable lot documentation available |
Applications
| Aerospace Data Acquisition | Avionics Bus Interface |
|---|---|
Use Scenario: Capturing analog-to-digital converter output streams in flight control computers under vibration and EMI stress. IC Role / Device Role / Timing Role: Transparent latch holding sampled ADC data until CPU read cycle begins; C driven by system clock edge, OC synchronized to bus grant. Use Value: Eliminates need for external bus transceivers, reduces component count, and maintains deterministic setup/hold timing across –55°C to +125°C. |
Use Scenario: Isolating and buffering ARINC 429 or MIL-STD-1553B data bus signals between subsystems. IC Role / Device Role / Timing Role: Bidirectional bus driver with independent OC control enabling time-multiplexed data exchange between flight management and navigation units. Use Value: 24 mA drive capability ensures signal integrity over long harness runs; hysteresis prevents false triggering during engine ignition transients. |
| Defense Radar Signal Processing | Tactical Radio Baseband Interface |
Use Scenario: Latching I/Q sample data from RF front-end ADCs before FFT processing in electronic warfare receivers. IC Role / Device Role / Timing Role: High-speed parallel latch synchronizing to FPGA-generated sampling clocks; OC used for dynamic bus arbitration during DMA bursts. Use Value: 35 MHz max frequency supports >10 MSPS sampling rates; hermetic CDIP package ensures reliability in high-humidity coastal deployments. |
Use Scenario: Interfacing baseband processors to modulator/demodulator ICs in software-defined radios operating in jamming environments. IC Role / Device Role / Timing Role: Register file element storing configuration bits for RF synthesizers and filter banks; C tied to processor write strobe. Use Value: P-N-P inputs minimize loading on low-power microcontroller GPIOs; MIL-spec temp range guarantees operation inside sealed vehicle-mounted enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal transparent latch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN54LS373J | Same function, pinout, and CDIP-J package; identical electrical specs but not MIL-PRF-38535 certified - all parameters not 100% tested per Class B screening. | Acceptable for non-critical ground-based test equipment where full military qualification is not mandated. | Select SN54LS373J only when cost sensitivity outweighs requirement for full lot traceability and guaranteed parameter testing at temperature extremes. |
| M38510/32502BRA | Octal D-type flip-flop (edge-triggered) variant in same CDIP-J package; CLK instead of C input; requires positive-edge clock for data capture. | Suitable for synchronous pipeline stages where data must be captured only on clock edges - not for transparent gating or asynchronous handshaking. | Choose M38510/32502BRA when system architecture mandates strict edge-aligned sampling rather than level-sensitive latching. |
Compared with SN54LS373J, M38510/32503BRA provides guaranteed full-parameter testing across temperature and radiation tolerance assurance; compared with M38510/32502BRA, it offers transparent (level-sensitive) behavior essential for handshake-driven data transfer and bus arbitration protocols.
Availability
M38510/32503BRA is available at Aetrix Electronics and suitable for aerospace flight computers, avionics data concentrators, and defense radar signal processors requiring stable component supply with full MIL-PRF-38535 compliance and long-term obsolescence management.
Supply support for M38510/32503BRA 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 solutions for defense, aerospace, and industrial markets.
M38510/32503BRA belongs to TI's military logic family designed specifically for ruggedized digital interfacing in mission-critical systems where parameter stability, thermal resilience, and long-term supply chain integrity are mandatory.
FAQ
What is the primary function of the M38510/32503BRA?
The M38510/32503BRA is an octal D-type transparent latch with 3-state outputs. Its core function is to hold eight parallel data bits while the enable (C) input is high, and retain those values when C goes low. The output control (OC) pin independently places all outputs in high-impedance state, enabling shared bus operation. This functionality is implemented in a CDIP-J package qualified to MIL-PRF-38535 standards.
Does the M38510/32503BRA support operation at –55°C and +125°C?
Yes, the M38510/32503BRA is fully specified and tested over the full –55°C to +125°C operating temperature range per MIL-PRF-38535 requirements. All key parameters-including propagation delay, output drive, and input thresholds-are validated at both temperature extremes, making it suitable for deployment in uncontrolled environmental compartments of aircraft and armored vehicles.
How does the M38510/32503BRA differ from commercial SN74LS373 variants?
The M38510/32503BRA differs from commercial SN74LS373 parts in three critical ways: it uses a hermetic CDIP-J package (not plastic PDIP), undergoes 100% parametric testing across temperature per MIL-PRF-38535 Class B, and carries SNPB (tin-lead) lead finish for solderability and reliability in high-vibration environments. Commercial variants lack full military screening and temperature coverage.
Can the M38510/32503BRA be used as a direct replacement for SN54LS373J?
Yes, the M38510/32503BRA is a direct functional, electrical, and mechanical replacement for SN54LS373J - same CDIP-J package, identical pinout, matching logic behavior, and overlapping voltage/timing specs. However, M38510/32503BRA adds full MIL-PRF-38535 qualification, including enhanced screening, lot traceability, and guaranteed performance at temperature extremes.
What is the purpose of the hysteresis on the C and OC inputs of the M38510/32503BRA?
The hysteresis on the C (clock/enable) and OC (output control) inputs improves noise rejection by approximately 400 mV, preventing false triggering due to EMI, ground bounce, or signal ringing in harsh electromagnetic environments. This feature is especially valuable in avionics and defense platforms where transient immunity directly impacts system-level functional safety and data integrity.
M38510/32503BRA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 54LS
- Package/Case:
- 20-CDIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Standard
- Type:
- D-Type
- Output Type:
- Tri-State, Non-Inverted
- Number of Elements:
- 1
- Number of Bits per Element:
- 8
- Clock Frequency:
- 50 MHz
- Max Propagation Delay @ V, Max CL:
- 28ns @ 5V, 45pF
- Trigger Type:
- Positive Edge
- Current - Output High, Low:
- 1mA, 12mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Iq):
- 40 mA
- Input Capacitance:
- -
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 20-CDIP
M38510/32503BRA FAQ
1.How can I place an order for M38510/32503BRA through Aetrix?
Please submit a Request for Quotation (RFQ) for M38510/32503BRA 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 M38510/32503BRA reliable?
The price and inventory of M38510/32503BRA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M38510/32503BRA is usually 5 days.
3.What payment methods are accepted for M38510/32503BRA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M38510/32503BRA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for M38510/32503BRA?
M38510/32503BRA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M38510/32503BRA 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 M38510/32503BRA?
For technical support, including M38510/32503BRA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M38510/32503BRA requirements.
6.How does Aetrix verify that M38510/32503BRA is sourced from the original manufacturer or authorized distributors?
All M38510/32503BRA 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 M38510/32503BRA meets industry standards.
7.What is the process for return or replacement of M38510/32503BRA?
All M38510/32503BRA units undergo pre-shipment inspection (PSI). If there is an issue with M38510/32503BRA, 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 M38510/32503BRA part is unused and in its original packaging.
Return procedure for M38510/32503BRA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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