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Texas Instruments CD54HC354F3A
- Part No.:
- CD54HC354F3A
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- -
- Datasheet:
-
CD54HC354F3A.pdf
- Description:
- CD54HC354 HIGH SPEED CMOS LOGIC
- Quantity:
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Inventory:1,336
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Product details
Overview
CD54HC354F3A from Texas Instruments is a high-speed CMOS 8-line to 1-line data selector/multiplexer/register with three-state complementary outputs, transparent latches for S0–S2 and data inputs, buffered inputs, and bus-line driving capability. It operates from 2V to 6V, delivers 18ns typical propagation delay (VCC = 5V, CL = 15pF), and supports industrial temperature range –55°C to +125°C.
For engineers reviewing the CD54HC354F3A datasheet, CD54HC354F3A pinout, CD54HC354F3A application, or CD54HC354F3A equivalent, this device is selected for high-reliability multiplexing in aerospace, military, and extended-temperature embedded control systems where latch-controlled address/data registration and independent three-state output enable are required.
Technical Context
The CD54HC354F3A integrates eight transparent data latches and an 8-to-1 selector with three independent output-enable inputs (OE1, OE2, OE3) controlling complementary Y/Y outputs. Its latch enable (LE) input captures S0–S2 and D0–D7 simultaneously when low, while the data enable (E) controls whether new data passes through or is latched.
It implements true three-state logic with separate enable paths per output pair, supports LSTTL load compatibility (15 loads on bus-driver outputs), and features balanced propagation delay and transition times across its operating voltage (2V–6V) and full temperature range (–55°C to +125°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | 8-line to 1-line data selector/multiplexer/register with transparent latches and 3-state complementary outputs |
| Supply Voltage Range | 2V to 6V - enables direct interface with mixed-voltage logic systems without level shifters |
| Propagation Delay (Dn → Y) | 18ns typical at VCC = 5V, CL = 15pF - ensures timing-critical multiplexing in high-speed control buses |
| Operating Temperature | –55°C to +125°C - qualified for military/aerospace applications per MIL-PRF-38535 Class F |
| Output Drive Capability | 15 LSTTL loads - sufficient for direct fanout to multiple downstream TTL inputs without buffers |
| Input Noise Immunity | NIL = NIH = 30% of VCC at VCC = 5V - robust against supply noise and crosstalk in noisy environments |
| Three-State Leakage | ±10 µA max at –55°C to +125°C - ensures stable high-impedance state under extreme thermal stress |
Pinout & Package
CD54HC354F3A is housed in a 20-lead CERDIP (Ceramic Dual In-line Package) with hermetic sealing, rated for high-reliability military and space applications. Pin numbering follows standard dual-in-line convention with Pin 1 at top-left corner (notch or dot oriented left).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | D0 | Data input 0 - one of eight parallel data sources selected by S2:S0 address |
| 2 | D1 | Data input 1 - registered via transparent latch when LE is low |
| 3 | D2 | Data input 2 - latched synchronously with S0–S2 on LE falling edge |
| 4 | D3 | Data input 3 - supports simultaneous address and data capture for glitch-free selection |
| 5 | D4 | Data input 4 - routed through internal 1-of-8 decoder to Y/Y outputs |
| 6 | D5 | Data input 5 - high-impedance isolation when any OE is high |
| 7 | D6 | Data input 6 - compatible with 2V–6V logic thresholds per HC specification |
| 8 | D7 | Data input 7 - full rail-to-rail swing support with CMOS input loading |
| 9 | E | Data enable - controls transparency/latching of D0–D7; low = latch, high = pass-through |
| 10 | GND | Ground reference - dedicated power return for noise-sensitive analog/digital mixed-signal operation |
| 11 | VCC | Positive supply - accepts 2V–6V; decoupling required per MIL-STD-883 method 3000.1 |
| 12 | Y | True output - active-low complement of Y; both driven simultaneously in same state |
| 13 | OE1 | Output enable 1 - controls Y/Y pair; high = high-impedance, low = enabled |
| 14 | OE2 | Output enable 2 - independent control path for redundancy or partitioned bus management |
| 15 | Y | Complement output - electrically inverted version of Y; used for differential signaling or logic inversion |
| 16 | OE3 | Output enable 3 - third independent enable for fault-tolerant system-level output gating |
| 17 | S0 | Select bit 0 - latched with S1/S2 on LE low; defines LSB of 3-bit address (0–7) |
| 18 | S1 | Select bit 1 - forms middle bit of selection address; synchronous with LE |
| 19 | S2 | Select bit 2 - MSB of selection address; all three bits registered together |
| 20 | LE | Latch enable - low-active control that captures S0–S2 and D0–D7 into transparent latches |
Key Features
| Feature | Design Value |
|---|---|
| Transparent data and select latches | Simultaneous capture of 3-bit address (S0–S2) and 8-bit data (D0–D7) on LE low - eliminates address/data skew in real-time control loops |
| Three-state complementary outputs (Y/Y) | Dual-output architecture enables differential bus driving or single-ended use with built-in inversion - reduces external logic count |
| Independent OE1/OE2/OE3 control | Three separate enable inputs allow granular bus arbitration, hot-swap isolation, or redundant output gating without shared logic |
| Bus line driving capability (15 LSTTL loads) | Direct drive of legacy TTL subsystems without buffer ICs - simplifies board layout and improves signal integrity |
| Wide temperature operation (–55°C to +125°C) | Fully characterized and tested per MIL-PRF-38535 Class F requirements - suitable for unheated/ungoverned avionics enclosures |
Applications
| Aerospace Data Acquisition | Military Avionics Bus Interface |
|---|---|
Use Scenario: Multiplexing sensor data from 8 analog-to-digital converters onto a shared MIL-STD-1553 or ARINC 429 interface bus. IC Role / Device Role / Timing Role: Registers synchronized sensor addresses and values using LE, then selects and drives conditioned data onto the bus via Y/Y outputs under OE control. Use Value: Eliminates need for discrete latch + MUX + driver combinations, reducing component count and improving timing predictability across temperature extremes. |
Use Scenario: Isolating and routing mission-critical control signals between redundant flight control computers and actuator interfaces. IC Role / Device Role / Timing Role: Acts as a latch-enabled, three-state configurable signal router with independent OE1/OE2/OE3 for fail-safe bus partitioning. Use Value: Enables hardware-level fault containment: individual OE lines disable outputs during detected anomalies without affecting other channels. |
| Secure Communication Module | High-Reliability Industrial PLC |
Use Scenario: Selecting between encrypted and plaintext data streams in tamper-resistant cryptographic modules operating in harsh environments. IC Role / Device Role / Timing Role: Uses E and LE to gate and latch secure data paths; Y/Y outputs drive differential bus drivers with precise timing alignment. Use Value: Prevents data leakage during switching via simultaneous latching and controlled three-state transitions - critical for TEMPEST compliance. |
Use Scenario: Managing I/O expansion in explosion-proof programmable logic controllers deployed in oil/gas refineries with ambient temperatures up to +125°C. IC Role / Device Role / Timing Role: Routes field sensor inputs to CPU via isolated backplane; operates reliably at full spec without derating. Use Value: Guarantees uninterrupted operation over full industrial temperature range with no thermal shutdown or parameter drift-induced errors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-to-1 multiplexer/register applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CD74HC354E | Same logic function and pinout, but in plastic PDIP package; rated –55°C to +125°C, not MIL-qualified | Lacks hermetic CERDIP packaging and MIL-PRF-38535 qualification - unsuitable for space or sustained high-humidity military use | Select CD74HC354E only for commercial/industrial prototypes or cost-sensitive non-mission-critical designs. |
| SNJ54HC354FK | Identical function and CERDIP package; fully screened to Class K per MIL-PRF-38535 with radiation hardness assurance | Includes total ionizing dose (TID) and single-event effect (SEE) characterization - required for LEO/GEO satellite payloads | Choose SNJ54HC354FK when radiation tolerance, lot traceability, or extended reliability testing is mandated. |
Compared with CD74HC354E, CD54HC354F3A provides hermetic sealing and MIL-qualified screening for long-term reliability in extreme environments; compared with SNJ54HC354FK, it lacks radiation hardening but meets baseline Class F requirements at lower cost and lead time.
Availability
CD54HC354F3A is available at Aetrix Electronics and suitable for aerospace data acquisition, military avionics bus interface, and secure communication module applications requiring stable component supply across extended temperature and long lifecycle demands.
Supply support for CD54HC354F3A 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 global semiconductor leader with over 50 years of analog and logic IC innovation, serving aerospace, defense, industrial, and automotive markets.
The CD54HC354F3A belongs to TI's military-grade HC logic family, designed specifically for high-reliability systems demanding extended temperature operation, hermetic packaging, and compliance with MIL-PRF-38535 Class F standards.
FAQ
What is the maximum clock frequency supported by CD54HC354F3A?
The CD54HC354F3A does not operate on a clock signal - it is combinational logic with latch control. Its maximum usable data rate is determined by propagation delays: at VCC = 5V and CL = 15pF, Dn→Y delay is 18ns, supporting effective selection rates up to ~55 MHz in pipelined configurations. Full timing margins must include setup/hold times for LE and E inputs as specified in the switching characteristics table.
Is CD54HC354F3A pin-compatible with CD74HC354E?
Yes, CD54HC354F3A and CD74HC354E share identical pinout, logic function, and electrical behavior across their overlapping voltage and temperature ranges. The primary difference is packaging: CD54HC354F3A uses hermetically sealed CERDIP for military use, while CD74HC354E uses plastic PDIP for commercial applications.
Does CD54HC354F3A support mixed-voltage operation between inputs and outputs?
No - CD54HC354F3A is a single-supply CMOS device with all inputs and outputs referenced to the same VCC (2V–6V). Input thresholds scale with VCC (VIH = 3.15V min at 4.5V), and outputs swing rail-to-rail. Level translation requires external circuitry if interfacing with different voltage domains.
How does the three-state enable architecture of CD54HC354F3A differ from standard 74HC354 variants?
CD54HC354F3A provides three independent output-enable inputs (OE1, OE2, OE3) controlling the same complementary Y/Y outputs - enabling flexible bus arbitration, fault-isolation sequencing, or redundant gating. Standard 74HC354 variants typically offer only one OE input, limiting control granularity in safety-critical systems.
What is the purpose of the E (data enable) and LE (latch enable) inputs in CD54HC354F3A?
In CD54HC354F3A, LE controls registration of address (S0–S2) and data (D0–D7) into transparent latches - low LE captures inputs, high LE allows dynamic selection. E controls data flow: high E passes Dn directly to outputs, low E latches the currently selected value. This dual-latch architecture supports both registered and transparent multiplexing modes.
CD54HC354F3A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 54HC
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- -
- Circuit:
- -
- Independent Circuits:
- -
- Current - Output High, Low:
- -
- Voltage Supply Source:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
CD54HC354F3A FAQ
1.How can I place an order for CD54HC354F3A through Aetrix?
Please submit a Request for Quotation (RFQ) for CD54HC354F3A 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 CD54HC354F3A reliable?
The price and inventory of CD54HC354F3A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CD54HC354F3A is usually 5 days.
3.What payment methods are accepted for CD54HC354F3A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CD54HC354F3A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CD54HC354F3A?
CD54HC354F3A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CD54HC354F3A 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 CD54HC354F3A?
For technical support, including CD54HC354F3A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CD54HC354F3A requirements.
6.How does Aetrix verify that CD54HC354F3A is sourced from the original manufacturer or authorized distributors?
All CD54HC354F3A 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 CD54HC354F3A meets industry standards.
7.What is the process for return or replacement of CD54HC354F3A?
All CD54HC354F3A units undergo pre-shipment inspection (PSI). If there is an issue with CD54HC354F3A, 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 CD54HC354F3A part is unused and in its original packaging.
Return procedure for CD54HC354F3A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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