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STMicroelectronics 74LCX07MTR
- Part No.:
- 74LCX07MTR
- Manufacturer:
- STMicroelectronics
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
74LCX07MTR.pdf
- Description:
- IC BUFFER NON-INVERT 3.6V 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,978
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Product details
Overview
74LCX07MTR from STMicroelectronics is a low-voltage CMOS hex buffer with open-drain outputs and 5 V tolerant inputs, operating from 2.0 V to 3.6 V. It delivers 5.2 ns max propagation delay at 3 V, ±24 mA output drive, and symmetrical output impedance-enabling direct interfacing with 5 V buses while powered at 3.3 V in PCI-compliant systems.
For engineers reviewing the 74LCX07MTR datasheet, 74LCX07MTR pinout, 74LCX07MTR application, or 74LCX07MTR equivalent, this device is selected for level-shifting, bus buffering, and wired-OR logic in mixed-voltage industrial and automotive control subsystems where input tolerance, speed-power balance, and latch-up immunity are critical.
Technical Context
The 74LCX07MTR implements six independent open-drain buffers using sub-micron C2MOS technology, with each stage featuring internal clamping diodes and power-down protection on all I/O pins. Its input structure guarantees operation up to 5.5 V regardless of VCC, enabling safe connection to legacy 5 V signal sources without external resistors.
Output behavior follows standard open-drain logic: low-state drive (IOL = 24 mA min at VCC = 3 V) and high-impedance state (IOZ ≤ ±5 μA), requiring external pull-up for HIGH assertion. Propagation delays (tPLZ/tPZL) are characterized under 50 pF load and 500 Ω termination, with skew <1.0 ns between outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Operating Range | 2.0 V to 3.6 V - supports 3.3 V system rails with margin for supply variation |
| Input Voltage Tolerance | 0 V to 5.5 V - enables direct interface to 5 V TTL/CMOS without level shifters |
| tPD (Max) | 5.2 ns at VCC = 3.0–3.6 V, CL = 50 pF - matches AC/ACT speed at half the supply voltage |
| IOL / IOH (Min) | ±24 mA at VCC = 3.0–3.6 V - drives standard PCI bus loads and multiple CMOS inputs |
| ESD Rating (HBM) | 2000 V - exceeds MIL-STD-883 Class 3A for robust handling in assembly and field use |
| Latch-up Immunity | >500 mA per JESD17 - prevents destructive latch-up during transient overvoltage events |
| Input Leakage (II) | ±5 μA at VI = 0–5.5 V - minimizes loading on upstream drivers in high-impedance networks |
Pinout & Package
74LCX07MTR is housed in a 14-pin SOIC (SO-14) package with standard 1.27 mm pitch, compliant with ECOPACK® environmental specifications. The body dimensions are 8.55–8.75 mm × 3.8–4.0 mm × 1.35–1.75 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 9, 11, 13 (1A–6A) | Data inputs | 5 V tolerant CMOS inputs accepting 0–5.5 V; internally clamped to VCC and GND |
| 2, 4, 6, 8, 10, 12 (1Y–6Y) | Open-drain outputs | Active-low drivers with 24 mA sink capability; require external pull-up for HIGH |
| 7 | GND | Reference ground for all I/O and internal circuitry; must be low-impedance connection |
| 14 | VCC | Primary power supply (2.0–3.6 V); powers internal logic and defines output LOW threshold |
Key Features
| Feature | Design Value |
|---|---|
| 5 V tolerant inputs | Enables seamless integration into mixed-voltage systems without external level translators |
| Symmetrical output drive (|IOH| = IOL) | Ensures consistent timing and noise margins across rising/falling edges in wired-OR configurations |
| Power-down protection | Prevents back-driving and current leakage when VCC = 0 V, supporting hot-swap and partial power-down |
| PCI bus compliance at 24 mA | Meets electrical requirements for peripheral component interconnect signaling in legacy computing platforms |
| Low ICC quiescent current (10 μA) | Reduces static power consumption in battery-backed or always-on monitoring circuits |
Applications
| Industrial PLC I/O Expansion | Automotive Body Control Module |
|---|---|
|
Use Scenario: Buffering and level-shifting digital sensor signals (e.g., switch inputs, encoder pulses) from 5 V sensors to 3.3 V microcontroller GPIOs in programmable logic controllers. IC Role / Device Role / Timing Role: Open-drain hex buffer providing bidirectional voltage translation and wired-OR aggregation of multiple dry-contact inputs. Use Value: Eliminates need for discrete MOSFET translators; 5.2 ns delay ensures real-time response in cycle-critical I/O scanning. |
Use Scenario: Driving LED status indicators and relay coils from a 3.3 V CAN microcontroller in vehicle door modules, where inputs originate from 5 V LIN or analog sensor interfaces. IC Role / Device Role / Timing Role: Output driver with 24 mA sink capability and 5 V tolerant inputs, enabling direct connection to legacy 5 V subsystems. Use Value: Reduces BOM count by consolidating six independent drivers; latch-up immunity (>500 mA) withstands automotive load dump transients. |
| Legacy PCI Slot Interface | Consumer Set-Top Box Power Sequencing |
|
Use Scenario: Implementing active-low enable signals and bus arbitration lines in add-in cards compatible with 32-bit 5 V PCI slots operating at 3.3 V core logic. IC Role / Device Role / Timing Role: Hex open-drain buffer generating PCI-compatible control signals (e.g., FRAME#, IRDY#, STOP#) with precise skew control (<1.0 ns). Use Value: Meets PCI specification timing and drive strength requirements without external pull-ups exceeding 500 Ω. |
Use Scenario: Controlling power-enable sequencing for multi-rail SoC subsystems (e.g., HDMI PHY, tuner, memory) in digital TV receivers, where 5 V standby rails monitor 3.3 V main domain readiness. IC Role / Device Role / Timing Role: Level-translating buffer coordinating power-on reset and rail-enable handshaking between isolated voltage domains. Use Value: Input tolerance allows monitoring of 5 V standby signals while powered from 3.3 V main rail; low leakage (±5 μA) avoids false triggering during deep sleep. |
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 |
|---|---|---|---|
| SN74LVC07A (Texas Instruments) | Same 2.0–3.6 V VCC range and 5 V tolerant inputs; tPD = 5.5 ns (max), IOL = 24 mA - nearly identical AC/DC specs | Qualified to AEC-Q100 Grade 2 (-40/+105 °C); wider temp range than 74LCX07MTR's -40/+85 °C | Select for automotive applications requiring extended temperature operation or TI-aligned supply chain |
| 74AHC07 (Nexperia) | Higher VCC range (2.0–5.5 V); no 5 V input tolerance - inputs limited to VCC; tPD = 6.0 ns (max) at 3.3 V | Not suitable for 5 V input interfacing without external clamping; better suited for single-rail 3.3 V or 5 V systems | Select only when full 5 V input tolerance is unnecessary and higher VCC flexibility is required |
Compared with SN74LVC07A and 74AHC07, the 74LCX07MTR uniquely combines guaranteed 5 V input tolerance with -40/+85 °C operation and PCI-compliant drive strength at 3.3 V, making it optimal for cost-sensitive industrial and entry-level automotive designs where mixed-voltage interoperability is mandatory.
Availability
74LCX07MTR is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, and legacy PCI slot interface applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant SO-14 packaging.
Supply support for 74LCX07MTR 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing silicon solutions for automotive, industrial, and consumer markets since 1987.
The 74LCX logic family was engineered for low-voltage, high-speed interoperability between 3.3 V systems and legacy 5 V infrastructure - targeting cost-effective, pin-compatible upgrades in industrial control and computing platforms.
FAQ
Can 74LCX07MTR drive a 5 V pull-up resistor while powered at 3.3 V?
Yes. Its open-drain outputs tolerate up to VCC + 0.5 V on the output pin, and its 5 V tolerant inputs allow direct connection to 5 V signal sources. When used with a 5 V pull-up, the output HIGH level equals the pull-up voltage (5 V), while LOW is actively driven to ≤0.55 V at 24 mA sink current - confirmed in Table 6 (VOL) and Table 4 (VO rating).
Is 74LCX07MTR suitable for hot-swap applications?
Yes. It features power-down protection on all inputs and outputs, ensuring no back-current flows into VCC when unpowered. Per Table 4, IO and IIK ratings remain valid down to VCC = 0 V, and Ioff leakage is limited to 10 μA when VCC = 0 V and VI or VO = 5.5 V - enabling safe insertion into live backplanes.
What is the maximum capacitive load the 74LCX07MTR can drive reliably?
The datasheet specifies dynamic performance (tPLZ/tPZL) with CL = 50 pF and RL = 500 Ω. COUT is measured at 14 pF (Table 9), and CPD is 4.3 pF. While not explicitly rated beyond 50 pF, stable operation up to ~75 pF is achievable with controlled edge rates (dt/dv ≤ 10 ns/V) and proper PCB layout - verified via waveform analysis in Figure 5 and test circuit in Figure 4.
Does 74LCX07MTR meet automotive qualification standards?
No - the 74LCX07MTR is rated for -40/+85 °C and is not AEC-Q100 qualified. However, ST offers the automotive-grade 74LCX07YMTR variant (same SO-14 package, marking "LCX07Y") qualified to AEC-Q100 Grade 2 and screened per AEC-Q001/Q002, intended for body electronics and infotainment subsystems requiring automotive reliability.
74LCX07MTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- 74LCX
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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 ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SO
74LCX07MTR FAQ
1.How can I place an order for 74LCX07MTR through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LCX07MTR 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 74LCX07MTR reliable?
The price and inventory of 74LCX07MTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LCX07MTR is usually 5 days.
3.What payment methods are accepted for 74LCX07MTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LCX07MTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LCX07MTR?
74LCX07MTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LCX07MTR 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 74LCX07MTR?
For technical support, including 74LCX07MTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LCX07MTR requirements.
6.How does Aetrix verify that 74LCX07MTR is sourced from the original manufacturer or authorized distributors?
All 74LCX07MTR 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 74LCX07MTR meets industry standards.
7.What is the process for return or replacement of 74LCX07MTR?
All 74LCX07MTR units undergo pre-shipment inspection (PSI). If there is an issue with 74LCX07MTR, 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 74LCX07MTR part is unused and in its original packaging.
Return procedure for 74LCX07MTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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