Nexperia USA Inc. 74HC4049PW,118

Overview

74HC4049PW,118 from Nexperia is a hex inverting HIGH-to-LOW level shifter with overvoltage-tolerant inputs rated to 15 V, operating across 2.0 V–6.0 V supply, delivering 6 independent CMOS inverters for bidirectional voltage translation between higher-voltage logic domains (e.g., 12 V) and lower-voltage digital systems (e.g., 3.3 V or 5 V microcontrollers). It supports industrial temperature range (−40 °C to +125 °C) and is packaged in TSSOP16.

For engineers reviewing the 74HC4049PW,118 datasheet, 74HC4049PW,118 pinout, 74HC4049PW,118 application, or 74HC4049PW,118 equivalent, key selection criteria include input overvoltage tolerance (15 V), propagation delay (8–26 ns at VCC = 4.5–6.0 V), output drive capability (±4 mA at 4.5 V), wide supply range (2.0–6.0 V), and −40 °C to +125 °C operation - all critical for legacy interface bridging and mixed-voltage system design.

Technical Context

The 74HC4049PW,118 implements six independent CMOS inverter stages, each featuring diode-clamped inputs capable of accepting up to 15 V regardless of VCC (2.0–6.0 V), enabling true HIGH-to-LOW unidirectional level shifting without external components. Its internal structure includes polysilicon resistor-based input protection and rail-to-rail output swing.

It operates as a non-inverting buffer when used with external pull-up resistors on outputs, but functions natively as an inverter - meaning logic HIGH at input yields LOW at output, and vice versa - with propagation delays tightly specified across voltage and temperature (e.g., 8 ns typ. at VCC = 6.0 V, CL = 50 pF).

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; surface-mount, lead-free, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar hex inverting level shifting applications.

Compared with SN74LVX4049M and 74LVC4049PW, the 74HC4049PW,118 uniquely supports 15 V input tolerance across its full 2.0–6.0 V supply range - making it the only option among the three for robust HIGH-to-LOW translation from 12 V sources into 3.3 V or 5 V logic domains without external circuitry.

Availability

74HC4049PW,118 is available at Aetrix Electronics and suitable for industrial sensor interface, legacy bus translation, automotive wake-up signal conditioning, and programmable logic interface applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74HC4049PW,118 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 focused on essential efficiency-enhancing components - including logic, discrete, and MOSFET devices - serving automotive, industrial, mobile, and computing markets with high-volume, high-reliability solutions.

The 74HC4049PW,118 belongs to Nexperia's 74HC logic family, engineered specifically for robust, low-power, mixed-voltage interface bridging in space-constrained and thermally demanding environments.

FAQ

Can the 74HC4049PW,118 be used for LOW-to-HIGH level shifting?

No - the 74HC4049PW,118 is a unidirectional HIGH-to-LOW level shifter only. Its inputs tolerate up to 15 V, but outputs swing only between GND and VCC (max 6.0 V). To shift from 3.3 V to 5 V or 12 V, a dedicated bidirectional translator or open-drain buffer with external pull-up is required.

What is the maximum capacitive load the 74HC4049PW,118 can drive reliably?

The device is characterized with CL = 50 pF in dynamic testing, and propagation delay remains within spec up to ~75 pF. For loads exceeding 50 pF, output rise/fall times increase linearly - e.g., tt rises from 6 ns (typ.) at 50 pF to ~12 ns at 150 pF - so layout and load capacitance must be controlled for timing-critical use.

Are pins 13 and 16 (n.c.) required to be left floating?

Yes - pins 13 and 16 are internally unconnected. They must not be tied to VCC or GND unless necessary for mechanical stability (e.g., solder mask definition), as doing so may introduce parasitic coupling or violate JEDEC TSSOP land pattern recommendations. Standard practice is to leave them unconnected.

Does the 74HC4049PW,118 support partial power-down or I/O isolation when VCC = 0 V?

No - the device lacks Ioff (power-off protection) or IOZ (high-Z output during power-down) features. When VCC = 0 V, inputs remain overvoltage-tolerant (up to 15 V), but outputs enter undefined states and may source/sink current through internal protection diodes. External isolation (e.g., series resistors) is required in hot-swap or partial-power scenarios.