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Texas Instruments M38510/05553BEA
- Part No.:
- M38510/05553BEA
- Manufacturer:
- Texas Instruments
- Package:
- 16-CDIP (0.300", 7.62mm)
- Datasheet:
-
M38510/05553BEA.pdf
- Description:
- MILITARY 6-CH, 3-V TO 18-V INVER
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
M38510/05553BEA from Texas Instruments is a military-grade CMOS hex inverting buffer (CD4049UB family) designed for high-voltage logic-level conversion and TTL load driving. It operates from 3V to 18V, delivers ≥3.2mA sink current at VCC = 5V and TA = 25°C, features ≤0.05V VOL, and supports –55°C to +125°C operation. It is used in legacy aerospace avionics interfaces requiring robust voltage translation between CMOS and DTL/TTL subsystems.
For engineers reviewing the M38510/05553BEA datasheet, M38510/05553BEA pinout, M38510/05553BEA application, or M38510/05553BEA equivalent, key selection criteria include its 18V absolute maximum rating, verified 1µA max input current at 18V over full temperature range, 6-channel inverting logic function, PDIP-16 military packaging, and compatibility with MIL-PRF-38535 Class B screening.
Technical Context
The M38510/05553BEA implements six independent CMOS inverter stages with symmetrical output drive capability and single-supply operation. Its input threshold is referenced to VCC, enabling VIH up to 15V while VCC = 5V - a core feature for high-to-low level translation without external level shifters.
It uses standard CMOS transistor topology with rail-to-rail output swing, exhibits propagation delays of 25–120ns depending on supply and transition, and maintains functional integrity across –55°C to +125°C with no derating required below 18V. Input clamp diodes to VCC require VIN ≤ VCC to prevent conduction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Hex inverting buffer - each of six channels performs A → ¬A logic inversion with rail-to-rail output swing. |
| Supply Voltage Range | 3V to 18V DC - enables direct interface between 5V TTL and 12–15V legacy avionics buses without external regulators. |
| Output Sink Current | ≥3.2mA at VCC = 5V, TA = 25°C - sufficient to drive two standard TTL loads (IIL = −1.6mA each) directly. |
| Input Leakage Current | ≤1µA at VCC = 18V, full temperature range - ensures minimal loading on high-impedance sensor or control signal sources. |
| Propagation Delay | 25ns (min) to 120ns (max) - specified at VCC = 5/10/15V with 50pF load; supports <10MHz digital control timing in hardened systems. |
| Operating Temperature | –55°C to +125°C - qualified per MIL-PRF-38535 Class B for extended-range deployment in engine bays and space-constrained enclosures. |
| Absolute Max Rating | VCC to VSS = –0.5V to +20V - provides 2V margin above 18V operating limit for transient suppression design headroom. |
Pinout & Package
Package: 16-pin hermetically sealed ceramic dual in-line package (CDIP), compliant with MIL-STD-1835B Type C, 7.62mm pitch, 20.32mm × 6.35mm body dimensions, lead finish SnPb.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Positive power supply input - must be bypassed with 0.1µF capacitor near pin; supports 3–18V operation. |
| 2 | G | Inverting output 1 - driven low when input A (pin 3) is high; sinks up to 3.2mA at VCC = 5V. |
| 3 | A | Input 1 - non-inverting logic input; VIH ≥ 4V at VCC = 5V; must not exceed VCC due to internal clamp diode. |
| 4 | H | Inverting output 2 - driven low when input B (pin 5) is high; electrically identical to pin 2. |
| 5 | B | Input 2 - identical electrical behavior to pin 3; all six inputs share same VIH/VIL thresholds. |
| 6 | I | Inverting output 3 - matches pins 2 and 4; six outputs are fully independent and symmetrical. |
| 7 | C | Input 3 - one of six buffered inputs; no internal termination - unused pins must be tied to VCC or VSS. |
| 8 | VSS | Negative supply / ground reference - return path for all output sink currents and quiescent device current. |
| 9 | D | Input 4 - supports same voltage translation capability as other inputs; VIH scales linearly with VCC. |
| 10 | J | Inverting output 4 - output stage matches others; VOL ≤ 0.05V guarantees TTL-compatible low state. |
| 11 | E | Input 5 - validated for 100nA leakage at 25°C, critical for low-power battery-backed subsystems. |
| 12 | K | Inverting output 5 - capable of sourcing ≥0.65mA high-level current (IOH) at VCC = 5V, TA = 25°C. |
| 13, 16 | NC | No connection - internally unconnected; may be left floating or grounded per board layout requirements. |
| 14 | F | Input 6 - final input channel; all six inputs and outputs are functionally identical and interchangeable. |
| 15 | L | Inverting output 6 - completes the hex buffer set; total device IDD ≤ 1µA at VCC = 5V, TA = 25°C. |
Key Features
| Feature | Design Value |
|---|---|
| Single-supply level translation | Accepts input voltages exceeding VCC (e.g., 15V input with VCC = 5V) via internal voltage-clamp-free input structure - enables direct CMOS-to-TTL interfacing without external components. |
| High sink current drive | Guaranteed ≥3.2mA output low current at VCC = 5V, TA = 25°C - eliminates need for discrete transistor buffers when driving multiple TTL inputs. |
| Military temperature qualification | Screened and tested per MIL-PRF-38535 Class B across –55°C to +125°C - ensures reliability in jet engine control units and satellite power management. |
| Ultra-low input leakage | ≤1µA max input current at 18V over full temperature range - preserves signal integrity in high-impedance analog monitoring circuits sharing the same PCB. |
| Rail-to-rail output swing | VOH ≥ 4.95V and VOL ≤ 0.05V at VCC = 5V - meets TTL VOH/VOL thresholds without pull-up resistors, reducing component count in legacy designs. |
Applications
| Avionics Sensor Interface | TTL Bus Driver |
|---|---|
Use Scenario: Interfacing 12V analog sensor outputs to 5V microcontroller ADC inputs in flight control computers. IC Role / Device Role / Timing Role: Level-shifting inverter buffer converting 12V logic-high signals to 5V-compatible levels while providing noise immunity. Use Value: Eliminates need for discrete resistor-divider networks and Schmitt-trigger buffers, reducing BOM count and improving long-term calibration stability. |
Use Scenario: Driving multiple TTL gate inputs from a single CMOS microcontroller I/O line in radar warning receiver subsystems. IC Role / Device Role / Timing Role: High-current inverting driver ensuring fast, monotonic transitions into capacitive TTL fan-out loads. Use Value: Delivers guaranteed 3.2mA sink current per channel, meeting worst-case TTL IIL requirements without timing degradation or signal bounce. |
| Legacy System Voltage Translation | Engine Control Unit Signal Conditioning |
Use Scenario: Bridging 15V industrial PLC outputs to 5V FPGA configuration logic in airborne maintenance test equipment. IC Role / Device Role / Timing Role: Bidirectional voltage translator supporting both high-to-low and low-to-high logic level mapping using single VCC. Use Value: Enables reuse of existing 15V field wiring while migrating control logic to modern 5V FPGAs - avoids costly cable replacement programs. |
Use Scenario: Buffering camshaft position sensor signals before feeding to ECU timing-critical interrupt inputs in turbine engine controllers. IC Role / Device Role / Timing Role: Low-propagation-delay inverter (25ns min) with deterministic edge timing for crank-angle synchronization. Use Value: Meets <50ns jitter budget for ignition timing accuracy; military temp rating ensures stable delay across thermal transients during takeoff/climb cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex inverting buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CD4049UBE | Commercial-grade PDIP-16 version; not screened to MIL-PRF-38535; rated only to –40°C to +85°C. | Lacks radiation tolerance, burn-in, and extended temperature validation - unsuitable for flight-critical hardware. | Select only for ground-test fixtures or non-flight prototype builds where cost outweighs qualification rigor. |
| 74HC04D | CMOS hex inverter with 2V–6V supply range; 5.2mA sink current at VCC = 4.5V; no high-voltage translation capability. | Cannot accept inputs > VCC - requires external level shifters for 12V/15V interface scenarios. | Use only in new 3.3V/5V-only designs with no legacy voltage domain bridging requirements. |
Compared with CD4049UBE and 74HC04D, M38510/05553BEA uniquely combines military screening, 18V absolute rating, and true high-input-voltage translation in a single die - making it irreplaceable in certified avionics upgrades where interface voltage mismatch and environmental stress coexist.
Availability
M38510/05553BEA is available at Aetrix Electronics and suitable for avionics integration, engine control unit (ECU) refurbishment, and legacy system sustainment requiring stable component supply under MIL-PRF-38535 Class B compliance, extended temperature operation, and long-lifecycle traceability.
Supply support for M38510/05553BEA 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 components for aerospace, defense, and industrial markets.
M38510/05553BEA belongs to TI's military-qualified CD4049UB logic family, engineered specifically for voltage-domain bridging in safety-critical systems where interoperability between legacy high-voltage and modern low-voltage digital subsystems is mandatory.
FAQ
What is the maximum input voltage allowed on M38510/05553BEA inputs when VCC = 5V?
The M38510/05553BEA allows input voltages up to 15V when VCC = 5V, as confirmed by its VIH(Min) specification of 4V at VCC = 5V and documented high-to-low level conversion capability. This is enabled by its CMOS input structure without internal clamp diodes to VCC - unlike many standard logic devices. However, inputs must never exceed the absolute maximum rating of 20V, and sustained operation above VCC should follow TI's recommended conditions for logic-level translation applications.
Is M38510/05553BEA pin-compatible with commercial CD4049UBE?
Yes, M38510/05553BEA is pin-compatible with CD4049UBE in the 16-pin PDIP package: both share identical pin 1 (VCC), pin 8 (VSS), pin 3 (input A), pin 2 (output G), and all other terminal assignments. The internal circuitry and logic function are identical. The distinction lies solely in screening - M38510/05553BEA undergoes MIL-PRF-38535 Class B testing including burn-in, temperature cycling, and radiation hardness assurance, whereas CD4049UBE is commercial-grade.
Does M38510/05553BEA support non-inverting operation?
No, M38510/05553BEA implements only inverting logic - each of its six channels performs A → ¬A, B → ¬B, etc. For non-inverting hex buffer functionality, the related military part M38510/05554BEA (CD4050B variant) is specified. Both share identical pinout, package, and environmental ratings, differing only in logic polarity - allowing drop-in replacement in layouts where signal inversion is acceptable or compensated in firmware.
What is the typical power dissipation per inverter stage in M38510/05553BEA at 1MHz and VCC = 5V?
At 1MHz switching frequency, VCC = 5V, and CL = 50pF, the typical power dissipation per inverter stage in M38510/05553BEA is approximately 10µW, based on Figure 5-9 in the TI datasheet. Total device dissipation remains well under 100µW under these conditions, contributing to low thermal load in densely packed avionics modules. Power scales linearly with frequency and quadratically with VCC.
Can unused inputs on M38510/05553BEA be left floating?
No, unused inputs on M38510/05553BEA must never be left floating. As a CMOS device, floating inputs cause undefined output states, increased supply current, and potential oscillation due to noise coupling. TI explicitly requires all unused inputs to be tied to either VCC or VSS - the choice depends on desired default output state (e.g., tie input to VCC to force output low). This is mandated in Section 8.4.1 of the CD4049UB/CD4050B datasheet and reinforced in MIL-PRF-38535 handling guidelines.
M38510/05553BEA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 4000B
- Package/Case:
- 16-CDIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Logic Type:
- Buffer, Inverting
- Number of Elements:
- 6
- Number of Bits per Element:
- 1
- Input Type:
- -
- Output Type:
- Push-Pull
- Current - Output High, Low:
- 8mA, 48mA
- Voltage - Supply:
- 3V ~ 18V
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-CDIP
M38510/05553BEA FAQ
1.How can I place an order for M38510/05553BEA through Aetrix?
Please submit a Request for Quotation (RFQ) for M38510/05553BEA 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 M38510/05553BEA reliable?
The price and inventory of M38510/05553BEA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M38510/05553BEA is usually 5 days.
3.What payment methods are accepted for M38510/05553BEA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M38510/05553BEA transactions.
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4.How is shipping managed for M38510/05553BEA?
M38510/05553BEA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your M38510/05553BEA 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 M38510/05553BEA?
For technical support, including M38510/05553BEA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M38510/05553BEA requirements.
6.How does Aetrix verify that M38510/05553BEA is sourced from the original manufacturer or authorized distributors?
All M38510/05553BEA 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 M38510/05553BEA meets industry standards.
7.What is the process for return or replacement of M38510/05553BEA?
All M38510/05553BEA units undergo pre-shipment inspection (PSI). If there is an issue with M38510/05553BEA, 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 M38510/05553BEA part is unused and in its original packaging.
Return procedure for M38510/05553BEA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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