NXP Semiconductors 74LVT16652ADGG,112

Overview

74LVT16652ADGG,112 from Nexperia is a 3.3 V, 16-bit dual-bus transceiver/register with real-time and stored-data transfer modes, 2.1 ns typical propagation delay (A↔B), ±32 mA output drive, and bus-hold inputs eliminating external pull-ups. It operates across −40 °C to +85 °C in TSSOP56 packaging and is used in high-speed backplane and memory interface applications requiring bidirectional data flow with register staging.

For engineers reviewing the 74LVT16652ADGG,112 datasheet, 74LVT16652ADGG,112 pinout, 74LVT16652ADGG,112 application, or 74LVT16652ADGG,112 equivalent, key selection considerations include its dual 8-bit transceiver architecture, complementary OE/S/CP controls per direction, 5 V-tolerant I/Os, bus-hold functionality, and 56-pin TSSOP package with verified 3-state timing.

Technical Context

The 74LVT16652ADGG,112 implements two independent 8-bit transceiver channels (A↔B), each with dedicated clock (CPAB/CPBA), select (SAB/SBA), and output enable (OEAB/OEBA) inputs. Its BiCMOS design enables TTL-level compatibility while operating at 3.3 V supply, supporting mixed-voltage system interfacing.

It supports four operational modes: real-time A→B or B→A transfer, isolated storage of A- or B-side data on rising clock edges, and simultaneous transfer of stored data between buses - all without decoding glitches during select transitions due to internal synchronous logic.

Key Specifications

Pinout & Package

TSSOP56 package (SOT364-1), 14.1 mm × 6.2 mm × 1.2 mm body, 0.5 mm pitch, 56 leads, 6.1 mm body width, lead-free and RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit bus transceiver/register applications.

Compared with SN74LVC16646AIPM and 74ALVCH16652GR, the 74LVT16652ADGG,112 uniquely combines 5 V-tolerant I/Os, integrated bus-hold, and glitch-free select control - making it optimal for industrial and backplane designs where signal integrity and robustness are prioritized over peak frequency.

Availability

74LVT16652ADGG,112 is available at Aetrix Electronics and suitable for high-speed backplane interfaces, memory subsystem buffering, industrial PLC I/O expansion, and test equipment digital pattern generation requiring stable component supply and long-term lifecycle assurance.

Supply support for 74LVT16652ADGG,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 leader in high-performance discrete, logic, and PowerMOS semiconductors, serving automotive, industrial, computing, and consumer markets with scalable, reliable components.

The 74LVT16652ADGG,112 belongs to Nexperia's LVT logic family, engineered for 3.3 V systems requiring 5 V-tolerant I/Os, high-speed bidirectional data transfer, and robust bus management in noise-sensitive or hot-swap environments.

FAQ

What is the maximum clock frequency supported by the 74LVT16652ADGG,112?

The 74LVT16652ADGG,112 supports a maximum clock frequency of 180 MHz (typical) at VCC = 3.3 V ± 0.3 V, as specified in Table 8 of the datasheet. This enables high-speed register loading for synchronous bus architectures. The device maintains reliable operation down to 2.7 V supply, with fmax reduced to 150 MHz at that minimum voltage. Timing margins must be verified per application using setup/hold and propagation delay values.

Does the 74LVT16652ADGG,112 support 5 V logic inputs?

Yes, the 74LVT16652ADGG,112 supports 5 V-tolerant inputs: VI can range from −0.5 V to +7.0 V (Table 5), and recommended input voltage extends to 5.5 V (Table 6). This allows direct connection to 5 V TTL or CMOS outputs without external level shifters. Outputs remain 3.3 V compatible, and the device draws no current when driving a 5 V bus - a key advantage over non-tolerant logic families.

How does the bus-hold feature work on the 74LVT16652ADGG,112?

The 74LVT16652ADGG,112 integrates bus-hold circuitry on all A- and B-side I/O pins, providing ±75 µA minimum overdrive current (Table 7) to retain the last valid logic state when inputs float. This eliminates the need for external pull-up or pull-down resistors, reducing BOM cost and PCB space. Bus-hold activates automatically - no configuration is required - and functions across the full −40 °C to +85 °C temperature range.

Can the 74LVT16652ADGG,112 operate in real-time and stored-data modes simultaneously?

No - the 74LVT16652ADGG,112 cannot operate real-time and stored-data modes simultaneously across both directions. However, it supports asymmetric operation: for example, real-time A→B transfer while storing B→A data (per Table 4, "Store B, hold A" mode), provided clock edges are properly staggered when select controls differ. Simultaneous real-time transfer in both directions is permitted only when both SAB and SBA are LOW.

What package type is used for the 74LVT16652ADGG,112?

The 74LVT16652ADGG,112 uses the TSSOP56 package (SOT364-1): a plastic thin shrink small outline package with 56 leads, 6.1 mm body width, 0.5 mm lead pitch, and 14.1 mm × 6.2 mm footprint. It is lead-free and RoHS compliant. This package provides superior thermal and electrical performance over SSOP variants, with shorter lead inductance critical for high-speed signal integrity.