NXP Semiconductors 74LVC2952APW,112

Overview

74LVC2952APW,112 from NXP Semiconductors (formerly Philips) is an octal non-inverting registered transceiver with 5 V tolerant inputs/outputs, operating from 1.2 V to 3.6 V supply, supporting bidirectional data flow between two 8-bit buses via dual edge-triggered registers and independent 3-state control. It enables level translation in mixed-voltage systems such as 3.3 V microcontrollers interfacing to 5 V peripherals.

For engineers reviewing the 74LVC2952APW,112 datasheet, 74LVC2952APW,112 pinout, 74LVC2952APW,112 application, or 74LVC2952APW,112 equivalent, key selection criteria include its 250 MHz max clock frequency at 3.3 V, 3.6 ns typical propagation delay, 5 V tolerance on all I/O pins, and TSSOP24 package compatibility with high-density PCB layouts.

Technical Context

The 74LVC2952APW,112 implements two independent 8-bit back-to-back registers synchronized to rising edges of CPAB and CPBA clocks, each gated by dedicated CEAB/CEBA enable inputs. Data latched from A or B bus is held until output enable (OEAB/OEBA) is asserted low, enabling precise timing control in synchronous bus arbitration.

Its 5 V tolerant I/O structure uses overvoltage-protected input buffers and robust output drivers compliant with JEDEC JESD8-B/JESD36, allowing direct connection to 5 V logic without external level shifters while maintaining full CMOS low-power operation across −40 °C to +125 °C ambient range.

Key Specifications

Pinout & Package

TSSOP24 package: plastic thin shrink small outline, 24 leads, body width 4.4 mm, lead pitch 0.65 mm, designed for automated surface-mount assembly and thermal performance in compact layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar registered transceiver applications.

Compared with SN74LVC8T245RHLR and 74ALVC162952MTDX, the 74LVC2952APW,112 uniquely delivers registered, bidirectional 8-bit data flow with independent clock and enable controls - essential for synchronous bus arbitration where data must be captured and forwarded on precise clock edges rather than passed through combinatorially.

Availability

74LVC2952APW,112 is available at Aetrix Electronics and suitable for industrial automation, automotive electronics, and test instrumentation requiring stable component supply across extended temperature ranges and mixed-voltage system integration.

Supply support for 74LVC2952APW,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

NXP Semiconductors, formerly Philips Semiconductors, designs high-reliability logic and interface ICs for automotive, industrial, and communications markets with emphasis on robustness, low power, and long-term supply stability.

The 74LVC2952APW,112 belongs to NXP's LVC (Low-Voltage CMOS) logic family, engineered specifically for mixed-voltage system interfacing with guaranteed 5 V tolerance, wide supply range, and extended temperature operation.

FAQ

What is the maximum clock frequency supported by the 74LVC2952APW,112?

The 74LVC2952APW,112 supports a maximum clock frequency of 250 MHz at VCC = 3.3 V and CL = 50 pF, as specified in the dynamic characteristics table. This rating applies to both CPAB and CPBA inputs under recommended operating conditions and enables high-speed synchronous data transfer between the A and B buses in the 74LVC2952APW,112.

Does the 74LVC2952APW,112 require external pull-up resistors on its I/O pins?

No, the 74LVC2952APW,112 does not require external pull-up resistors on its I/O pins because it features internally terminated inputs with defined HIGH/LOW thresholds and active 3-state outputs. Its VIH/VIL specifications (e.g., VIH ≥ 2.0 V at VCC = 2.7–3.6 V) ensure reliable logic-level recognition without external biasing, simplifying design for the 74LVC2952APW,112.

Can the 74LVC2952APW,112 operate with a 1.8 V supply voltage?

Yes, the 74LVC2952APW,112 is fully specified to operate from 1.2 V to 3.6 V, including 1.8 V. At 1.8 V, static parameters such as VIH (≥ VCC), VOL (≤ 0.3 V), and ICC (≤ 40 µA) remain valid across −40 °C to +125 °C, making the 74LVC2952APW,112 suitable for ultra-low-power battery-operated systems.

How does the 74LVC2952APW,112 handle bus contention between A and B sides?

The 74LVC2952APW,112 prevents bus contention through independent 3-state control: OEAB and OEBA must both be LOW to enable outputs in their respective directions, and the internal registers isolate stored data from real-time I/O states. This architecture ensures that only one direction drives the bus at any time, eliminating contention risk in the 74LVC2952APW,112.

Is the 74LVC2952APW,112 pin-compatible with other packages in the 74LVC2952A family?

No, the 74LVC2952APW,112 uses the TSSOP24 (SOT355-1) package with 0.65 mm pitch and 4.4 mm body width, while the SO24 (SOT137-1) and SSOP24 (SOT340-1) variants have different footprints, lead counts, and mechanical dimensions. Although functionally identical, PCB layout must be specific to the TSSOP24 package for the 74LVC2952APW,112.