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onsemi MC74LCX07DTG
- Part No.:
- MC74LCX07DTG
- Manufacturer:
- onsemi
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MC74LCX07DTG.pdf
- Description:
- IC BUF NON-INVERT 5.5V 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,104
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Product details
Overview
MC74LCX07DTG from onsemi is a low-voltage CMOS hex buffer with six independent open-drain outputs, operating from 1.65 V to 5.5 V supply, featuring 5.0 V–tolerant inputs, 24 mA output sink capability at 3.0 V, near-zero static supply current (10 µA), and LVTTL/LVCMOS compatibility - used in level-shifting I²C bus interfaces and wired-OR logic networks.
For engineers reviewing the MC74LCX07DTG datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, TSSOP-14 package details, truth table behavior, propagation delay (2.7 ns max at 5 V), and real-world interface use cases for mixed-voltage system design.
Technical Context
The MC74LCX07DTG implements six identical non-inverting buffer stages, each with high-impedance TTL-compatible inputs and open-drain NMOS outputs requiring external pull-up resistors. Its VIH/VIL thresholds scale with VCC (e.g., 0.65×VCC min at 1.65–1.95 V), enabling robust interfacing across 1.8 V, 2.5 V, 3.3 V, and 5 V domains.
Each output supports active-HIGH AND or active-LOW OR functions via wired-OR topology; output voltage levels are set externally without affecting propagation delay (tPLZ/tPZL ≤ 2.7 ns at 4.5–5.5 V). The device exhibits latchup immunity >100 mA and ESD tolerance >2000 V HBM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 5.5 V - enables single-supply operation across 1.8 V, 2.5 V, 3.3 V, and 5 V logic families |
| Input Voltage Tolerance | −0.5 V to +6.5 V - allows safe connection to 5 V drivers while powered from lower VCC |
| Output Sink Current | 24 mA @ 3.0 V - supports driving standard 3.3 V I²C bus loads or LED indicators |
| Propagation Delay | 2.7 ns max @ 4.5–5.5 V - ensures timing compliance in high-speed digital control paths |
| Static Supply Current | 10 µA - minimizes quiescent power in battery-backed or always-on subsystems |
| Input Capacitance | 7 pF @ 3.3 V - reduces capacitive loading on upstream drivers in dense PCB layouts |
| ESD Rating | 2000 V HBM - meets industrial handling requirements without additional protection circuitry |
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, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 12, 10, 8 (A0–A5) | Data Input | High-impedance TTL-compatible input accepting 0–5.5 V logic levels regardless of VCC |
| 2, 4, 6, 13, 11, 9 (O0–O5) | Open-Drain Output | NMOS drain terminal requiring external pull-up; sinks up to 24 mA when LOW |
| 7 | GND | Ground reference for all internal circuitry and output return path |
| 14 | VCC | Primary power supply rail (1.65–5.5 V); powers input buffers and output stage bias |
Key Features
| Feature | Design Value |
|---|---|
| 5 V–Tolerant Inputs | Enables direct connection to legacy 5 V microcontrollers or FPGAs without level shifters |
| Wired-OR/Wired-AND Logic | Allows multiple MC74LCX07DTG outputs to share one pull-up resistor for bus arbitration or interrupt combining |
| Low Dynamic Power | CPD = 25 pF enables <1 mW dynamic power at 10 MHz, critical for portable embedded systems |
| Zero Static Loading | II ≤ ±5 µA per input eliminates DC loading on upstream drivers, preserving signal integrity |
| Robust ESD Protection | HBM >2000 V eliminates need for external TVS diodes in typical industrial board-level ESD environments |
Applications
| I²C Bus Level Shifting | Interrupt Signal Aggregation |
|---|---|
Use Scenario: Interfacing a 3.3 V microcontroller I²C master with 5 V sensors or EEPROMs on the same bus. IC Role / Device Role / Timing Role: MC74LCX07DTG acts as bidirectional level translator using open-drain topology and shared pull-ups, maintaining I²C timing compliance. Use Value: Eliminates discrete MOSFET translators; supports standard-mode (100 kHz) and fast-mode (400 kHz) I²C without added propagation delay. | Use Scenario: Combining interrupt signals from multiple peripherals (e.g., ADC, UART, GPIO expander) into a single MCU IRQ line. IC Role / Device Role / Timing Role: MC74LCX07DTG provides active-low wired-OR functionality: any LOW input forces output LOW, triggering MCU interrupt. Use Value: Reduces MCU pin count; avoids software polling; preserves deterministic latency due to sub-3 ns propagation delay. |
| LED Driver Interface | Legacy System Glue Logic |
Use Scenario: Driving common-anode LEDs from a 1.8 V FPGA I/O bank with 5 V anode supply. IC Role / Device Role / Timing Role: MC74LCX07DTG serves as low-side switch: FPGA drives input HIGH/LOW, output sinks LED current through external 5 V pull-up. Use Value: Supports 24 mA sink per channel - sufficient for indicator LEDs without external transistors or current-limiting resistors on the FPGA side. | Use Scenario: Adapting legacy 5 V TTL control signals to modern 2.5 V ASIC inputs in industrial PLC backplanes. IC Role / Device Role / Timing Role: MC74LCX07DTG buffers and translates control lines (e.g., RESET#, ENABLE) while isolating voltage domains. Use Value: Prevents damage to 2.5 V ASIC inputs; maintains noise margin via VIH = 0.7×VCC threshold at 2.5 V (VIH ≥ 1.75 V). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex open-drain buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC07APWR | Same 1.65–5.5 V range and open-drain outputs, but rated only to 5.0 V input (not 5.5 V); slightly higher ICC (20 µA vs. 10 µA) | Valid for 5 V-tolerant I²C but lacks margin for overvoltage transients beyond 5.0 V | Prefer MC74LCX07DTG where input overvoltage resilience or ultra-low quiescent current is required |
| 74LVC1G07GW,125 | Single-channel variant in SOT353; identical electrical specs per channel but not pin-compatible or functionally equivalent for hex-buffer needs | Suitable only when only one open-drain buffer is needed; requires six separate placements for full hex replacement | Select MC74LCX07DTG when space-constrained designs require six channels in one TSSOP-14 footprint |
Compared with SN74LVC07APWR and 74LVC1G07GW,125, the MC74LCX07DTG offers superior input overvoltage margin (6.5 V absolute max), lower static current (10 µA), and integrated hex functionality - making it optimal for compact, mixed-voltage industrial control and sensor interface boards.
Availability
MC74LCX07DTG is available at Aetrix Electronics and suitable for I²C level shifting, interrupt aggregation, LED driver interfaces, and legacy system glue logic requiring stable component supply across automotive, industrial, and medical OEM programs.
Supply support for MC74LCX07DTG 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 focused on energy-efficient electronics, delivering silicon solutions for automotive, industrial, cloud, and IoT applications.
The MC74LCX07DTG belongs to the LCX low-voltage CMOS logic family, engineered for interoperability between 1.8 V, 2.5 V, 3.3 V, and 5 V systems while minimizing power and maximizing noise immunity in harsh environments.
FAQ
What is the maximum input voltage rating for MC74LCX07DTG?
The MC74LCX07DTG supports DC input voltages from −0.5 V to +6.5 V, independent of VCC. This allows safe interfacing with 5 V logic sources even when powered from 1.8 V or 2.5 V supplies - a key enabler for mixed-voltage system design without external level shifters.
Can MC74LCX07DTG drive standard I²C bus capacitance?
Yes. With 7 pF input capacitance and 8 pF output capacitance, the MC74LCX07DTG adds minimal load to I²C buses. Its 24 mA sink capability at 3.0 V easily handles the 3 mA typical requirement for standard-mode (100 kHz) and fast-mode (400 kHz) I²C, provided external pull-up values are selected per bus speed and voltage.
Does MC74LCX07DTG require external pull-up resistors on its outputs?
Yes - all six outputs of the MC74LCX07DTG are open-drain and must be pulled up externally to a defined voltage (e.g., 3.3 V or 5 V) via resistors. The value depends on bus speed, load capacitance, and sink current; typical values range from 1 kΩ (fast mode) to 10 kΩ (standard mode) for I²C applications.
Is MC74LCX07DTG compatible with both LVTTL and LVCMOS logic families?
Yes. The MC74LCX07DTG is explicitly designed for LVTTL and LVCMOS compatibility, with input thresholds scaling relative to VCC (e.g., VIH = 0.65×VCC at 1.65–1.95 V). This ensures reliable recognition of HIGH/LOW states across both families without level translation circuitry.
What is the thermal resistance (θJA) of MC74LCX07DTG in its TSSOP-14 package?
The MC74LCX07DTG in TSSOP-14 (Case 948G) has a junction-to-ambient thermal resistance (θJA) of 150 °C/W under JEDEC JESD51-7 conditions (76 mm × 114 mm, 2-oz copper, no airflow). This value informs thermal design margins when sinking up to 24 mA per output continuously.
MC74LCX07DTG 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:
- Buffer, Non-Inverting
- Number of Elements:
- 6
- Number of Bits per Element:
- 1
- Input Type:
- -
- Output Type:
- Open Drain
- Current - Output High, Low:
- -, 24mA
- Voltage - Supply:
- 2V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
MC74LCX07DTG FAQ
1.How can I place an order for MC74LCX07DTG through Aetrix?
Please submit a Request for Quotation (RFQ) for MC74LCX07DTG 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 MC74LCX07DTG reliable?
The price and inventory of MC74LCX07DTG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74LCX07DTG is usually 5 days.
3.What payment methods are accepted for MC74LCX07DTG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74LCX07DTG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC74LCX07DTG?
MC74LCX07DTG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC74LCX07DTG 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 MC74LCX07DTG?
For technical support, including MC74LCX07DTG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74LCX07DTG requirements.
6.How does Aetrix verify that MC74LCX07DTG is sourced from the original manufacturer or authorized distributors?
All MC74LCX07DTG 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 MC74LCX07DTG meets industry standards.
7.What is the process for return or replacement of MC74LCX07DTG?
All MC74LCX07DTG units undergo pre-shipment inspection (PSI). If there is an issue with MC74LCX07DTG, 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 MC74LCX07DTG part is unused and in its original packaging.
Return procedure for MC74LCX07DTG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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