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Home > Products > Integrated Circuits (ICs) > Logic > Buffers, Drivers, Receivers, Transceivers

STMicroelectronics 74LCX07YTTR

Name: 74LCX07YTTR
Brand: STMicroelectronics
SKU: 74LCX07YTTR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74LCX07YTTR

Manufacturer:: STMicroelectronics

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 14-TSSOP (0.173", 4.40mm Width)

Datasheet:: 74LCX07YTTR.pdf

Description:: IC BUF NON-INVERT 3.6V 14TSSOP

Quantity:: RFQ Add To RFQ list

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Inventory:3,036

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Product details

Overview

74LCX07YTTR from STMicroelectronics is an automotive-grade, 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 robust interfacing between 3.3 V logic and legacy 5 V buses in automotive body control modules.

For engineers reviewing the 74LCX07YTTR datasheet, 74LCX07YTTR pinout, 74LCX07YTTR application, or 74LCX07YTTR equivalent, this device is selected for level-shifting, bus buffering, and wired-OR logic in noise-sensitive, temperature-stable environments requiring AEC-Q100 qualification and ESD immunity up to 2000 V HBM.

Technical Context

The 74LCX07YTTR implements six independent non-inverting open-drain buffers using sub-micron C2MOS technology. Each channel features input and output protection diodes, power-down safe I/Os, and guaranteed PCI bus compatibility at 24 mA sink current.

Its architecture supports hot-swap capability via I_OFF protection (10 µA max at V_CC = 0 V) and exhibits matched high- and low-side output impedance (|I_OH| = I_OL ≥ 24 mA at V_CC = 3.0–3.6 V), enabling predictable rise/fall timing in pull-up–dependent configurations.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	2.0 V to 3.6 V - Enables direct integration into 3.3 V supply domains without level translators.
t_PD (max)	5.2 ns at V_CC = 3.0–3.6 V - Matches AC/ACT speed at half the supply voltage, critical for timing-critical bus interfaces.
I_OL (min)	24 mA at V_CC = 3.0–3.6 V - Sinks sufficient current to drive standard 5 V TTL loads with 3.3 V logic supply.
V_I Tolerance	0 V to 5.5 V - Allows direct connection of 5 V signals to inputs without external clamping or resistors.
ESD Rating	HBM: 2000 V - Meets automotive system-level ESD requirements per ISO 10605 without added protection circuitry.
Operating Temp	−40 °C to +85 °C - Qualified per AEC-Q100 Grade 3, suitable for under-hood and cabin electronics.
C_IN	6 pF at V_CC = 3.3 V - Low input capacitance minimizes loading on driving stages and preserves signal integrity.

Pinout & Package

TSSOP14 package: 4.9 mm × 6.4 mm × 1.05 mm body, 0.65 mm pitch, lead-free and RoHS-compliant per ECOPACK® specifications.

Pin/Terminal	Circuit Role	Design Meaning
1, 3, 5, 9, 11, 13 (1A–6A)	Input	5 V tolerant CMOS inputs accepting 0–5.5 V logic levels; internally clamped to V_CC and GND.
2, 4, 6, 8, 10, 12 (1Y–6Y)	Open-drain output	Active-low output with no internal pull-up; requires external pull-up resistor for HIGH state.
7	GND	Reference ground for all I/O and internal circuitry; must be low-impedance connection.
14	V_CC	Primary power supply (2.0–3.6 V); powers internal logic and defines output LOW voltage threshold.

Key Features

Feature	Design Value
5 V tolerant inputs	Enables seamless interface with mixed-voltage systems without external level shifters or voltage dividers.
Symmetrical output drive	Guaranteed \|I_OH\| = I_OL ≥ 24 mA ensures consistent rise/fall times when used with standardized pull-up resistors.
Power-down protection	I_OFF ≤ 10 µA at V_CC = 0 V prevents back-driving and signal contention during power sequencing.
Latch-up immunity	Exceeds 500 mA per JESD17 - eliminates risk of destructive latch-up in noisy automotive transients.
AEC-Q100 qualified	Automotive-grade reliability validated per stress tests including HTOL, TC, and ESD - supports 15-year vehicle lifecycle.

Applications

Automotive Body Control Unit

Industrial PLC I/O Expansion

Use Scenario: Driving multiple 5 V relay coils and LED indicators from a 3.3 V microcontroller in door module PCBs.

IC Role / Device Role / Timing Role: Open-drain buffer providing level-shifted, current-sinking interface with precise timing for synchronized indicator flashing.

Use Value: Eliminates discrete transistor arrays and reduces BOM count while maintaining 5.2 ns propagation delay for real-time response.

Use Scenario: Interfacing 3.3 V FPGA I/O banks to legacy 5 V industrial sensors and actuators over shared bus lines.

IC Role / Device Role / Timing Role: Bus buffer enabling wired-OR logic and fault-tolerant communication in RS-485 or CAN node peripheral expansion.

Use Value: 24 mA sink capability ensures reliable low-state assertion across long traces; 5 V tolerance avoids signal corruption from sensor supply variations.

PCI Express Slot Interface

Consumer Audio System Power Sequencing

Use Scenario: Implementing PCI bus-compatible enable/control signals for add-in cards in embedded computing platforms.

IC Role / Device Role / Timing Role: Hex buffer generating synchronized, slew-controlled enable signals for PCIe slot power controllers and reset latches.

Use Value: Guaranteed PCI timing compliance at 24 mA load enables drop-in replacement for legacy 74AC07 in space-constrained TSSOP14 layouts.

Use Scenario: Controlling sequential power-up of analog audio codecs, DACs, and amplifiers in smart speaker designs.

IC Role / Device Role / Timing Role: Level-shifting sequencer output to 5 V bias rails, coordinating startup order via open-drain wired-AND logic.

Use Value: Input hysteresis and 2 kV HBM ESD rating prevent false triggering during plug-in events and EMI-rich audio subsystem operation.

Equivalent & Alternatives

The following parts are listed as comparable options for similar open-drain buffer applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC07APWR	Lower V_CC min (1.65 V), no AEC-Q100 qualification, 24 mA I_OL at 3.3 V only.	Not rated for automotive temperature range; suited for commercial-grade consumer or computing systems.	Select when cost and footprint are prioritized over automotive reliability and extended temp operation.
74LVX07MTR	SO-14 package only; identical electrical specs but lacks AEC-Q100 validation and has higher t_PD (6.5 ns).	Used in industrial control boards where TSSOP density is unnecessary and thermal mass favors SOIC.	Choose for legacy board redesigns requiring pin-compatible SO-14 replacement without re-layout.

Compared with SN74LVC07APWR and 74LVX07MTR, the 74LCX07YTTR uniquely combines AEC-Q100 qualification, TSSOP14 compactness, and guaranteed 5.2 ns timing at 3 V - making it the only option qualified for safety-critical automotive signal routing where both reliability and speed are mandatory.

Availability

74LCX07YTTR is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, and consumer audio power sequencing requiring stable component supply across multi-year production cycles.

Supply support for 74LCX07YTTR 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 series was developed specifically for low-voltage, high-speed interoperability between 3.3 V logic and 5 V legacy systems - targeting automotive and industrial applications demanding robustness, speed, and mixed-voltage compatibility.

FAQ

Can 74LCX07YTTR drive a 5 V pull-up resistor directly?

Yes. Its 5 V tolerant inputs accept 0–5.5 V signals, and its open-drain outputs can sink up to 24 mA at 3.3 V supply. When paired with a 5 V pull-up (e.g., 10 kΩ), it reliably asserts LOW at ≤0.55 V and floats to 5 V HIGH - enabling true level translation without additional components.

Is external ESD protection required for 74LCX07YTTR in automotive designs?

No. With 2000 V HBM, 200 V MM, and 1000 V CDM ESD ratings, plus built-in input/output clamping diodes, the device meets ISO 10605 system-level ESD requirements for automotive interior and body modules without supplemental TVS devices.

What is the maximum capacitive load the 74LCX07YTTR can drive while maintaining 5.2 ns t_PD?

The 5.2 ns max t_PD is specified with C_L = 50 pF and R_L = 500 Ω per the test circuit in the datasheet. Driving >50 pF increases propagation delay linearly; for 100 pF loads, measured t_PD rises to ~7.0 ns - still within guaranteed AC limits per Table 8.

Does 74LCX07YTTR support hot-swap insertion in live backplanes?

Yes. Its power-down protection ensures I_OFF ≤ 10 µA when V_CC = 0 V, preventing back-current flow and bus contention during live insertion. Combined with latch-up immunity >500 mA, it safely operates in hot-pluggable I/O carrier modules per IEC 61000-4-2.

74LCX07YTTR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: 74LCX

Package/Case:: 14-TSSOP (0.173", 4.40mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

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:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: 14-TSSOP

74LCX07YTTR FAQ

1.How can I place an order for 74LCX07YTTR through Aetrix?

Please submit a Request for Quotation (RFQ) for 74LCX07YTTR 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 74LCX07YTTR reliable?

The price and inventory of 74LCX07YTTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LCX07YTTR is usually 5 days.

3.What payment methods are accepted for 74LCX07YTTR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LCX07YTTR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74LCX07YTTR?

74LCX07YTTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74LCX07YTTR 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 74LCX07YTTR?

For technical support, including 74LCX07YTTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LCX07YTTR requirements.

6.How does Aetrix verify that 74LCX07YTTR is sourced from the original manufacturer or authorized distributors?

All 74LCX07YTTR 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 74LCX07YTTR meets industry standards.

7.What is the process for return or replacement of 74LCX07YTTR?

All 74LCX07YTTR units undergo pre-shipment inspection (PSI). If there is an issue with 74LCX07YTTR, 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 74LCX07YTTR part is unused and in its original packaging.

Return procedure for 74LCX07YTTR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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