STMicroelectronics 74LVC04ATTR

Overview

74LVC04ATTR from STMicroelectronics is a low-voltage CMOS hex inverter with six independent inverters in a 14-pin TSSOP package, operating from 1.65 V to 3.6 V, delivering 4.5 ns max propagation delay at 3 V, ±24 mA output drive, and 5 V-tolerant inputs for mixed-voltage interfacing in 3.3/5 V systems.

For engineers reviewing the 74LVC04ATTR datasheet, 74LVC04ATTR pinout, 74LVC04ATTR application, or 74LVC04ATTR equivalent, key selection criteria include symmetrical output impedance, power-down protection on all I/Os, latch-up immunity >500 mA, ESD robustness (HBM >2 kV), and PCI bus-level drive capability at 24 mA.

Technical Context

The 74LVC04ATTR implements six unbuffered CMOS inverters with rail-to-rail input voltage tolerance up to 5.5 V and output swing limited by VCC (0 to VCC). Its sub-micron C2MOS process enables low dynamic power consumption and balanced tPLH/tPHL propagation delays.

All inputs and outputs feature diode-based ESD protection and power-down isolation-ensuring safe operation during partial power-down states. The device guarantees truth table functionality across 1.2 V to 3.6 V, with data retention supported down to 1.2 V.

Key Specifications

Pinout & Package

TSSOP-14 (Thin Shrink Small Outline Package) with 0.65 mm pitch, body dimensions 5.0 × 6.4 mm, and exposed pad not present. Compliant with JEDEC MO-153.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar hex inverter applications.

Compared with SN74LVC04APW, the 74LVC04ATTR offers identical performance but distinct traceability and qualification history; versus 74AHC04PW, it delivers superior speed and output strength at lower VCC, making it optimal for 3.3 V high-drive applications.

Availability

74LVC04ATTR is available at Aetrix Electronics and suitable for industrial PLC I/O modules, PCI bus interface logic, and low-power portable instrumentation requiring stable component supply and long-term lifecycle support.

Supply support for 74LVC04ATTR 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, specializing in microcontrollers, analog ICs, power management, and discrete components for industrial, automotive, and consumer markets.

The 74LVC04A belongs to ST's LVC (Low-Voltage CMOS) logic family, designed specifically for high-speed, low-power 1.65–3.6 V digital systems with mixed-voltage interoperability and robust ESD/latch-up performance.

FAQ

Is the 74LVC04ATTR compatible with 5 V logic inputs?

Yes. All inputs tolerate DC voltages from −0.5 V to +5.5 V regardless of VCC, enabling direct connection to 5 V TTL or CMOS outputs without external level-shifting circuitry. This is verified per Table 4 (Absolute Maximum Ratings) and Table 5 (Recommended Operating Conditions) in the official ST datasheet.

What is the minimum operating voltage for reliable logic operation?

The 74LVC04ATTR guarantees full truth table functionality down to 1.65 V VCC at ambient temperatures from −40 °C to +85 °C. Data retention (state hold) is maintained down to 1.2 V, but active switching is not specified below 1.65 V per Table 5.

Does this device support hot insertion or partial power-down?

Yes. Power-down protection on all inputs and outputs ensures high-impedance behavior when VCC = 0 V, preventing back-current flow and bus contention. This is explicitly stated in the device description and confirmed by Ioff leakage <100 µA at VI or VO = 5.5 V with VCC = 0 V (Table 6).

Can the 74LVC04ATTR drive standard 50 Ω transmission lines?

No. With typical output impedance >20 Ω (derived from VOH/VOL and IOL/IOH), the 74LVC04ATTR is not designed for direct 50 Ω line driving. It is intended for point-to-point or fanout-loaded CMOS/TTL loads. For transmission line termination, external series resistors or dedicated line drivers are required.