Nexperia USA Inc. 74ALVCH162827DGGY

Overview

74ALVCH162827DGGY from Nexperia is a 20-bit non-inverting CMOS buffer/line driver with integrated 30 Ω termination resistors, dual 10-bit 3-state control (nOE1/nOE2), bus hold inputs, and IOFF partial power-down protection. It operates from 2.3 V to 3.6 V, delivers ±12 mA output drive at 3.0 V, and is packaged in TSSOP56 (SOT364-1) for high-density PCB routing in memory and data bus applications.

For engineers reviewing the 74ALVCH162827DGGY datasheet, 74ALVCH162827DGGY pinout, 74ALVCH162827DGGY application, or 74ALVCH162827DGGY equivalent, this device supports high-speed transparent buffering with low-noise ground bounce mitigation, JEDEC-compliant voltage interfaces, and ESD robustness (HBM >2000 V, CDM >1000 V) for industrial and telecom backplane designs.

Technical Context

This device implements two independent 10-bit non-inverting buffers, each controlled by dedicated active-low enable inputs (nOE1 for outputs Y0–Y9, nOE2 for Y10–Y19). Its bus hold circuit maintains valid logic states on floating inputs without external pull-ups, reducing system component count.

The integrated 30 Ω series termination resistors match typical PCB trace impedances, minimizing signal reflections in point-to-point or stubbed bus topologies. IOFF functionality disables outputs during partial power-down, blocking damaging backflow current when VCC = 0 V while other rails remain active.

Key Specifications

Pinout & Package

TSSOP56 package (SOT364-1), 56-pin plastic thin shrink small outline, 6.1 mm body width, 0.5 mm pitch, 1.2 mm max height - optimized for automated assembly and thermal dissipation in dense layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 20-bit non-inverting buffer applications.

Compared with SN74ALVCH162827DGGR, the DGGY variant uses standard leaded finish and shares identical electrical specs; versus 74LVC16244ADGG, it trades off higher drive for integrated termination and bus hold-reducing BOM count and improving signal integrity in high-speed point-to-point links.

Availability

74ALVCH162827DGGY is available at Aetrix Electronics and suitable for memory subsystem buffering, industrial backplane interfacing, telecom line card signal conditioning, and automated test equipment channel multiplexing requiring stable component supply and long-term lifecycle support.

Supply support for 74ALVCH162827DGGY 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 high-volume, high-reliability logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74ALVCH series targets high-speed, low-power bus interface applications with advanced features like bus hold, IOFF, and integrated termination-designed specifically for noise-sensitive, space-constrained PCBs in telecom and computing infrastructure.

FAQ

What is the maximum operating frequency supported by the 74ALVCH162827DGGY?

The device does not specify a maximum clock frequency directly, but its propagation delay of 1.5–4.2 ns (VCC = 3.0–3.6 V, CL = 30–50 pF) supports reliable operation up to approximately 200 MHz in well-terminated point-to-point configurations. System-level timing must account for board trace delays and load capacitance beyond the 50 pF test condition.

Can the 74ALVCH162827DGGY be used with 2.5 V-only systems?

Yes. The device is fully specified from 2.3 V to 2.7 V per JEDEC JESD8-5, delivering guaranteed VOH ≥1.7 V and VOL ≤0.7 V at VCC = 2.5 V with 4 mA load-ensuring compatible interfacing with standard 2.5 V TTL and CMOS logic families without level translation.

How does the bus hold feature behave during power-up or brown-out conditions?

Bus hold remains active as long as VCC ≥0.5 V, retaining the last valid logic state on each input until supply stabilizes. At VCC <0.5 V, bus hold deactivates and inputs float; however, the IOFF circuit ensures outputs stay high-impedance, preventing contention or backfeed during undervoltage events.

Are the integrated 30 Ω resistors placed on the input or output side of the buffer?

The 30 Ω resistors are placed in series on the output side (between internal driver and pin), as confirmed by the functional diagram and dynamic characteristics test setup. This configuration provides source termination for controlled-impedance transmission line driving, reducing overshoot and reflections on PCB traces.