Nexperia USA Inc. 74HCT368PW,112

Overview

74HCT368PW,112 from Nexperia is a hex inverting 3-state buffer/line driver in TSSOP16 package, operating at 4.5–5.5 V supply with TTL-compatible inputs, 13 ns typical propagation delay (VCC = 4.5 V), ±6 mA output drive, and -40 °C to +125 °C industrial temperature range-used for bidirectional bus interfacing in microcontroller peripheral expansion systems.

For engineers reviewing the 74HCT368PW,112 datasheet, 74HCT368PW,112 pinout, 74HCT368PW,112 application, or 74HCT368PW,112 equivalent, key selection criteria include TTL-level input compatibility, 3-state enable timing (17 ns enable / 20 ns disable), output drive capability under 15 pF load, and thermal derating behavior in TSSOP16 packaging.

Technical Context

This device implements six independent inverting buffers, each with active-low 3-state control via dual OE inputs (1OE on pin 1, 2OE on pin 15). Its TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max) ensure direct interfacing with legacy 5 V logic families without level shifting.

Each output delivers rail-to-rail switching with VOL ≤ 0.26 V at 6 mA sink and VOH ≥ 3.98 V at 6 mA source under VCC = 4.5 V, while maintaining CMOS-level static power consumption (ICC ≤ 8 μA at 25 °C) and dynamic dissipation governed by CPD = 30 pF per buffer.

Key Specifications

Pinout & Package

TSSOP16 plastic thin shrink small outline package (SOT403-1), 16-pin, 4.4 mm body width, 0.65 mm lead pitch, exposed pad not present - optimized for high-density PCB layouts with improved thermal resistance vs SO16.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar hex inverting 3-state buffer applications.

Compared with 74HCT368PW,112, the SO16 variant offers superior thermal performance in thermally constrained enclosures, while the TI alternative provides second-source assurance with minor timing trade-offs acceptable in non-critical timing paths.

Availability

74HCT368PW,112 is available at Aetrix Electronics and suitable for microcontroller bus expansion, industrial PLC I/O backplanes, legacy system emulation, and test equipment signal routing requiring stable component supply across extended temperature ranges.

Supply support for 74HCT368PW,112 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

Nexperia is a global semiconductor expert delivering high-performance logic, analog, and MOSFET solutions with focus on efficiency, reliability, and sustainability - headquartered in Nijmegen, Netherlands.

The 74HCT series targets industrial and automotive-adjacent applications requiring TTL-compatible inputs, wide temperature operation, and robust ESD/latch-up performance - designed specifically for interoperability in mixed-logic legacy and modern embedded systems.

FAQ

What is the maximum clock frequency supported by 74HCT368PW,112 in bus-driving applications?

The device does not operate as a clocked element but as a combinatorial buffer. Its 13 ns typical propagation delay (VCC = 4.5 V, CL = 15 pF) supports reliable data toggling up to approximately 30 MHz in synchronous bus systems, assuming setup/hold margins are maintained by controller timing.

Can 74HCT368PW,112 drive a 50 Ω transmission line directly?

Yes - with VOH ≥ 3.98 V and VOL ≤ 0.26 V at ±6 mA (VCC = 4.5 V), it meets the voltage swing requirements for unterminated 50 Ω lines. However, series termination (e.g., 33 Ω) is recommended to suppress reflections in traces longer than 10 cm.

Is there a non-inverting version of this part in the same package?

Yes - the 74HCT367PW,112 is the non-inverting hex buffer/line driver in identical TSSOP16 packaging, sharing the same supply range, temperature grade, pinout, and timing specifications except for logic polarity.

Does 74HCT368PW,112 require external pull-up resistors on its 3-state outputs?

No - the outputs are actively driven to valid logic levels (VOL/VOH) when enabled and present high-impedance (Z) when disabled. Pull-ups are only needed if a defined logic state is required during the high-Z period, which is application-dependent and not inherent to the device operation.