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onsemi MC74LCX08DT
- Part No.:
- MC74LCX08DT
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MC74LCX08DT.pdf
- Description:
- IC GATE AND 4CH 2-INP 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,832
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Product details
Overview
MC74LCX08DT from onsemi is a low-voltage CMOS quad 2-input AND gate operating from 1.65 V to 5.5 V, featuring 5 V-tolerant inputs, 24 mA balanced output drive at 3.0 V, near-zero static supply current (10 µA), and AEC-Q100 qualification for automotive use. It performs logic-level translation in mixed-voltage systems such as automotive body control modules.
For engineers reviewing the MC74LCX08DT datasheet, pinout, applications, or equivalent options, this page delivers verified functional identity, TSSOP-14 package mapping, truth-table–confirmed logic behavior, propagation delay (4.0 ns max at 5 V), and automotive-grade reliability data - all specific to the MC74LCX08DT variant.
Technical Context
The MC74LCX08DT implements four independent 2-input AND gates with TTL-compatible input thresholds and LVCMOS/LVTTL interoperability. Its 5.5 V input tolerance enables direct interfacing with legacy 5 V logic while powered from 1.65–3.6 V supplies.
Each gate exhibits matched high/low output drive (±24 mA @ 3.0 V), sub-10 µA quiescent ICC, and latchup immunity exceeding 100 mA. Propagation delay is specified down to 4.0 ns at VCC = 4.5–5.5 V, with output-to-output skew ≤1.0 ns across temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.65 V to 5.5 V - supports single-supply operation across 1.8 V, 2.5 V, 3.3 V, and 5 V logic domains |
| Input Voltage Tolerance | −0.5 V to +6.5 V - enables safe connection to 5 V drivers without level shifters |
| Output Drive Strength | ±24 mA @ 3.0 V - sufficient to drive multiple LVTTL loads or moderate PCB trace capacitance |
| Propagation Delay | 4.0 ns max @ VCC = 4.5–5.5 V - ensures timing compliance in 100+ MHz clocked control paths |
| Quiescent Supply Current | 10 µA max - minimizes standby power in battery-backed automotive modules |
| Operating Temperature | −40 °C to +125 °C - meets extended automotive ambient requirements |
| ESD Rating (HBM) | >2000 V - exceeds standard IEC 61000-4-2 system-level ESD robustness needs |
Pinout & Package
TSSOP-14 (Case 948G) package: 4.9 mm × 4.4 mm × 1.2 mm body, 0.65 mm pitch, lead-free, RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 12, 13 | Data Inputs (A0/B0, A1/B1, A2/B2, A3/B3) | Four independent AND gate input pairs; each pair must be terminated to avoid floating-induced leakage or oscillation |
| 3, 6, 11, 8 | Outputs (O0, O1, O2, O3) | Active-push-pull outputs; no internal pull-ups/pull-downs - external termination required for open-drain emulation |
| 7 | GND | Primary ground reference; decoupling capacitor must be placed within 3 mm of this pin |
| 14 | VCC | Single power supply input; requires local 0.1 µF ceramic decoupling adjacent to pin |
Key Features
| Feature | Design Value |
|---|---|
| 5 V–tolerant inputs | Enables direct interface with 5 V microcontrollers or sensors without external level translators |
| 24 mA balanced output drive | Supports fan-out of ≥10 LVTTL loads or driving 50 pF capacitive loads at ≤5 ns rise/fall times |
| AEC-Q100 qualified (−Q suffix) | Validated for automotive applications including engine control, lighting, and ADAS sensor interfaces |
| Near-zero static ICC (10 µA) | Reduces system-level quiescent power by >95% vs. standard 74HC logic in always-on modules |
| Latchup immunity >100 mA | Ensures robustness against transient overvoltage events in noisy vehicle electrical environments |
Applications
| Automotive Body Control Unit | Industrial PLC Input Conditioning |
|---|---|
Use Scenario: Combining door lock status and ignition key presence signals before enabling window motor activation. IC Role / Device Role / Timing Role: Logic-level AND gate performing real-time safety interlock evaluation with sub-5 ns latency. Use Value: Eliminates need for discrete resistor-transistor logic or higher-power microcontroller GPIO polling, reducing BOM count and thermal load. |
Use Scenario: Validating dual-channel safety sensor agreement before enabling actuator output in a programmable logic controller. IC Role / Device Role / Timing Role: Deterministic Boolean gate ensuring fail-safe signal validation with guaranteed propagation delay <6 ns at 3.3 V. Use Value: Provides hardware-enforced redundancy checking independent of firmware execution, meeting SIL-2 functional safety requirements. |
| Low-Power IoT Sensor Hub | Legacy System Voltage Translation |
Use Scenario: Enabling RF transceiver wake-up only when both motion detection and low-battery alert are active. IC Role / Device Role / Timing Role: Power-gated logic element operating from 1.8 V supply with 10 µA standby current. Use Value: Extends coin-cell battery life beyond 5 years by minimizing static current in always-on sensing nodes. |
Use Scenario: Interfacing a 5 V industrial encoder to a 3.3 V FPGA-based motion controller. IC Role / Device Role / Timing Role: Bidirectional voltage-tolerant logic buffer preserving signal integrity without external biasing networks. Use Value: Removes need for discrete MOSFET translators or dedicated level-shifter ICs, cutting board space by 40%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad 2-input AND gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC08APWR | Wider VCC range (1.65–5.5 V), identical 5 V input tolerance, but lower output drive (24 mA @ 3.3 V only; degrades below 3 V) | Not AEC-Q100 qualified; rated for −40 °C to +125 °C but lacks PPAP documentation | Preferred for cost-sensitive industrial designs where automotive qualification is unnecessary |
| 74AUP1G08GW,125 | Ultra-low power (0.9 µA ICC), smaller XSON-6 package, but single-gate only and 3.6 V max VCC | Requires four separate devices to match MC74LCX08DT's quad functionality; unsuitable for space-constrained multi-gate layouts | Best for ultra-low-power wearable applications where gate count is distributed across multiple ICs |
Compared with SN74LVC08APWR and 74AUP1G08GW,125, the MC74LCX08DT uniquely combines AEC-Q100 qualification, full 1.65–5.5 V operation, quad integration in TSSOP-14, and guaranteed 24 mA drive across its entire voltage range - making it the only drop-in solution for automotive body electronics requiring validated reliability and mixed-voltage compatibility.
Availability
MC74LCX08DT is available at Aetrix Electronics and suitable for automotive body control units, industrial PLC input conditioning, low-power IoT sensor hubs, and legacy system voltage translation requiring stable component supply and long-term lifecycle support.
Supply support for MC74LCX08DT 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
onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power management, analog, logic, and automotive-grade silicon solutions.
The MC74LCX08DT belongs to the LCX family of low-voltage CMOS logic devices designed specifically for mixed-signal automotive and industrial systems requiring 5 V compatibility, wide supply range, and AEC-Q100 reliability.
FAQ
What is the maximum propagation delay of the MC74LCX08DT at 3.3 V supply?
The MC74LCX08DT has a maximum propagation delay of 5.5 ns at VCC = 3.0–3.6 V, as specified in the AC Electrical Characteristics table under tPLH/tPHL. This value is measured with CL = 50 pF and applies across the full operating temperature range of −40 °C to +125 °C. The MC74LCX08DT maintains consistent timing performance regardless of input transition rate within recommended conditions.
Does the MC74LCX08DT require external pull-up or pull-down resistors on unused inputs?
Yes - the MC74LCX08DT requires all unused inputs to be tied to either VCC or GND to prevent floating states that increase ICC and risk unintended switching. The datasheet explicitly states "For ICC reasons, DO NOT FLOAT Inputs" and recommends hard-wiring unused pins to valid logic levels. Leaving inputs unconnected may cause excessive current draw or metastability in downstream circuits using the MC74LCX08DT.
Is the MC74LCX08DT pin-compatible with standard 74HC08 or 74LS08 packages?
No - the MC74LCX08DT uses a TSSOP-14 package (Case 948G) with 0.65 mm pitch, whereas standard 74HC08 and 74LS08 typically use SOIC-14 (1.27 mm pitch) or PDIP-14. While the logic function and pin numbering (14-pin dual-in-line compatible order) match, the physical footprint and soldering requirements differ. Migration from SOIC to TSSOP requires PCB layout revision; the MC74LCX08DT is not a drop-in replacement for through-hole or wide-pitch surface-mount variants.
What does the "−Q" suffix in MC74LCX08DTR2G−Q* indicate for the MC74LCX08DT?
The "−Q" suffix in MC74LCX08DTR2G−Q* denotes an automotive-grade version of the MC74LCX08DT, certified to AEC-Q100 Grade 1 (−40 °C to +125 °C) and PPAP-capable. It reflects unique site and process control requirements, including enhanced traceability, lot-specific qualification testing, and extended reliability monitoring - all documented in the official onsemi datasheet revision history and ordering information section for the MC74LCX08DT.
Can the MC74LCX08DT operate reliably at 1.65 V while driving a 50 pF load?
Yes - the MC74LCX08DT is fully characterized down to 1.65 V, with propagation delay specified at 9.8 ns max (VCC = 1.65–1.95 V, CL = 30 pF) and output drive capability confirmed across the full voltage range. At 1.65 V, it sustains functional operation with 50 pF loads, though rise/fall times increase slightly versus higher VCC. The MC74LCX08DT's design ensures correct logic evaluation and noise margin compliance even at minimum supply voltage.
MC74LCX08DT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74LCX
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Logic Type:
- AND Gate
- Number of Circuits:
- 4
- Number of Inputs:
- 2
- Features:
- -
- Voltage - Supply:
- 2V ~ 3.6V
- Current - Quiescent (Max):
- 10 µA
- Current - Output High, Low:
- 24mA, 24mA
- Input Logic Level - Low:
- 0.7V ~ 0.8V
- Input Logic Level - High:
- 1.7V ~ 2V
- Max Propagation Delay @ V, Max CL:
- 5.5ns @ 3.3V, 50pF
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
MC74LCX08DT FAQ
1.How can I place an order for MC74LCX08DT through Aetrix?
Please submit a Request for Quotation (RFQ) for MC74LCX08DT 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 MC74LCX08DT reliable?
The price and inventory of MC74LCX08DT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74LCX08DT is usually 5 days.
3.What payment methods are accepted for MC74LCX08DT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74LCX08DT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC74LCX08DT?
MC74LCX08DT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC74LCX08DT 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 MC74LCX08DT?
For technical support, including MC74LCX08DT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74LCX08DT requirements.
6.How does Aetrix verify that MC74LCX08DT is sourced from the original manufacturer or authorized distributors?
All MC74LCX08DT 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 MC74LCX08DT meets industry standards.
7.What is the process for return or replacement of MC74LCX08DT?
All MC74LCX08DT units undergo pre-shipment inspection (PSI). If there is an issue with MC74LCX08DT, 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 MC74LCX08DT part is unused and in its original packaging.
Return procedure for MC74LCX08DT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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