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Home > Products > Integrated Circuits (ICs) > Logic > Latches

Nexperia USA Inc. 74ALVCH16373DGG,51

Name: 74ALVCH16373DGG,51
Brand: Nexperia USA Inc.
SKU: 74ALVCH16373DGG,51
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74ALVCH16373DGG,51

Manufacturer:: Nexperia USA Inc.

Category:: Latches

Package:: 48-TFSOP (0.240", 6.10mm Width)

Datasheet:: 74ALVCH16373DGG,51.pdf

Description:: IC 16BIT D TRANSP LATCH 48TSSOP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

74ALVCH16373DGG,51 from Nexperia is a 16-bit D-type transparent latch with bus hold inputs and 3-state outputs, operating across 1.2 V to 3.6 V supply range. It functions as two independent 8-bit latches (each controlled by dedicated LE/OE) or one unified 16-bit latch, supporting high-speed data capture in memory interfaces and bus buffering applications at up to 3.3 V.

For engineers reviewing the 74ALVCH16373DGG,51 datasheet, 74ALVCH16373DGG,51 pinout, 74ALVCH16373DGG,51 application, or 74ALVCH16373DGG,51 equivalent, key selection considerations include dual-latch enable architecture, IOFF partial power-down protection, bus hold input stabilization, ±24 mA drive at 3.0 V, and TSSOP48 thermal/noise-optimized layout.

Technical Context

The device implements two independent 8-bit transparent latch sections, each with dedicated active-HIGH latch enable (1LE/2LE) and active-LOW output enable (1OE/2OE), enabling selective data capture and bus isolation. Its bus hold circuitry maintains valid logic states on unused inputs without external pull-ups, reducing system component count.

IOFF functionality disables outputs during partial power-down, blocking backflow current when VCC = 0 V while other rails remain active. The MULTIBYTE™ flow-through pinout minimizes signal skew and routing congestion in high-density PCB layouts.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	1.2 V to 3.6 V - supports mixed-voltage system interfacing (1.8 V, 2.5 V, 3.3 V domains)
Propagation Delay (t_pd)	1.0 ns (min) to 3.3 ns (max) at V_CC = 3.0–3.6 V - enables >300 MHz data throughput in transparent mode
Output Drive	±24 mA at V_CC = 3.0 V - directly drives 50 Ω transmission lines at 85 °C without external buffers
Bus Hold Current	I_BHH = −75 μA to −175 μA (HIGH), I_IBHL = 45 μA to 150 μA (LOW) - eliminates need for external bias resistors on floating inputs
IOFF Protection	Active at V_CC = 0 V - prevents damaging backflow current during hot-swap or partial power-down sequences
Operating Temperature	−40 °C to +85 °C - qualified for industrial-grade embedded control and communications equipment
ESD Rating	HBM >2000 V, CDM >1000 V - robust handling in automated assembly and field-replaceable module environments

Pinout & Package

TSSOP48 plastic thin shrink small outline package (SOT362-1), 48-pin, 6.1 mm body width, with low-inductance multiple V_CC/GND pins for minimized ground bounce and noise coupling.

Pin/Terminal	Circuit Role	Design Meaning
1, 24	1OE, 2OE	Active-LOW output enable controlling first/second 8-bit output group - enables independent bus arbitration
2–3, 5–6, 8–9, 11–12	1Q0–1Q7	Data outputs for first 8-bit latch section - 3-state capable with simultaneous disable via 1OE
13–14, 16–17, 19–20, 22–23	2Q0–2Q7	Data outputs for second 8-bit latch section - electrically isolated from first section for dual-bus operation
4, 10, 15, 21, 28, 34, 39, 45	GND	Eight dedicated ground terminals - reduces common-impedance coupling and improves signal integrity
7, 18, 31, 42	V_CC	Four distributed power supply pins - lowers effective power rail inductance and suppresses switching noise
47–46, 44–43, 41–40, 38–37	1D0–1D7	Data inputs for first 8-bit latch - all equipped with bus hold circuitry for floating-input stability
36–35, 33–32, 30–29, 27–26	2D0–2D7	Data inputs for second 8-bit latch - independently debounced and held, enabling asynchronous input capture
48, 25	1LE, 2LE	Active-HIGH latch enable for respective 8-bit sections - allows staggered or synchronized data capture timing

Key Features

Feature	Design Value
Dual independent 8-bit latch control	Separate 1LE/1OE and 2LE/2OE pairs allow concurrent or time-multiplexed data capture on two buses
MULTIBYTE™ flow-through pinout	Input-to-output alignment minimizes trace length and skew in high-speed parallel bus layouts
IOFF partial power-down protection	Outputs automatically enter high-Z state when V_CC = 0 V, preventing backfeed into powered subsystems
Integrated bus hold on all inputs	Eliminates external pull-up/down resistors and associated board space, BOM cost, and reliability risk
Low-noise power distribution	Four V_CC and eight GND pins reduce simultaneous switching noise and improve EMI performance

Applications

Memory Interface Buffering

Industrial PLC I/O Expansion

Use Scenario: Latching address/data signals between microcontroller and SRAM or flash memory in resource-constrained controllers.

IC Role / Device Role / Timing Role: Transparent latch synchronizing burst-mode memory access; holds stable address during read/write cycles while data bus is shared.

Use Value: Enables reliable 16-bit parallel memory interface at 3.3 V with no external bus-hold components and deterministic setup/hold timing per JEDEC JESD8C.

Use Scenario: Isolating and latching digital I/O signals from field sensors and actuators in modular PLC backplanes.

IC Role / Device Role / Timing Role: Dual-section latch capturing sensor status and holding actuator commands under independent enable control for fault-tolerant sequencing.

Use Value: Provides galvanically isolated signal staging with IOFF protection during hot-swap of I/O modules, preventing backfeed into live backplane rails.

Test Equipment Signal Conditioning

Automated Test Fixture Control

Use Scenario: Capturing and holding stimulus patterns from pattern generators before applying to DUT under test.

IC Role / Device Role / Timing Role: 16-bit transparent latch acting as programmable delay stage with precise edge-aligned capture window.

Use Value: Delivers sub-3.3 ns propagation delay and <1 ns pulse-width tolerance, enabling nanosecond-accurate timing alignment in ATE systems.

Use Scenario: Driving relay banks and LED indicators in production test fixtures requiring simultaneous multi-channel control.

IC Role / Device Role / Timing Role: Output buffer/latch providing ±24 mA drive per channel to switch mechanical relays and illuminate status LEDs.

Use Value: Eliminates need for discrete driver transistors or external level shifters due to TTL-compatible inputs and 3.3 V CMOS output swing.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit transparent latch applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74ALVTH16373GR	TI part with identical function but different bus hold strength (I_BHH = −100 μA typ) and wider V_CC range (1.65–3.6 V)	Requires tighter VIH/VIL margins below 1.8 V; lacks IOFF specification	Select if sourcing TI-qualified supply chain or needing marginally higher bus hold current at 3.3 V
74LVC16373ADGG,118	Nexperia LVC variant: lower drive (±24 mA @ V_CC = 3.3 V), no bus hold, no IOFF, same TSSOP48 package	Requires external pull resistors; unsuitable for partial power-down systems	Select only for cost-sensitive non-critical applications where bus hold and IOFF are not required

Compared with SN74ALVTH16373GR and 74LVC16373ADGG,118, the 74ALVCH16373DGG,51 uniquely combines bus hold, IOFF, and guaranteed ±24 mA drive across 1.2–3.6 V - making it the sole choice for robust, low-BOM-count industrial bus interfaces requiring hot-swap resilience.

Availability

74ALVCH16373DGG,51 is available at Aetrix Electronics and suitable for memory interface buffering, industrial PLC I/O expansion, test equipment signal conditioning, and automated test fixture control requiring stable component supply across extended temperature and mixed-voltage environments.

Supply support for 74ALVCH16373DGG,51 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, reliable, and energy-efficient logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74ALVCH16373 belongs to Nexperia's advanced ALVCH logic family, engineered for low-power, high-speed bus interface applications in industrial automation and communications infrastructure where signal integrity and power sequencing resilience are critical.

FAQ

What is the minimum supply voltage for guaranteed operation of the 74ALVCH16373DGG,51?

The device is fully specified down to 1.2 V per its recommended operating conditions, with static and dynamic parameters validated across −40 °C to +85 °C at this voltage. Below 1.2 V, functionality is not guaranteed and bus hold behavior degrades.

Can the 74ALVCH16373DGG,51 be used in hot-swap applications?

Yes - its IOFF circuitry actively disables outputs when V_CC drops to 0 V, preventing backflow current into powered downstream circuits. This meets hot-swap requirements in modular backplane and field-replaceable unit designs.

How does the bus hold feature affect input leakage current?

Bus hold adds ±45 μA to ±450 μA of additional input current depending on input voltage and V_CC, as specified in Table 6 (IBHL/IBHH). This is intentional and necessary for maintaining stable logic levels on unterminated inputs.

Is the 74ALVCH16373DGG,51 pin-compatible with older 74-series latches?

No - it uses a proprietary MULTIBYTE™ flow-through pinout optimized for low-skew routing, differing from legacy 74AC/74HC16373 layouts. Direct replacement requires PCB redesign; verify pin mapping against SOT362-1 mechanical drawing before integration.

74ALVCH16373DGG,51 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: 74ALVCH

Package/Case:: 48-TFSOP (0.240", 6.10mm Width)

Packaging:: Tube

Product Status:: Obsolete

Logic Type:: D-Type Transparent Latch

Circuit:: 8:8

Output Type:: Tri-State

Voltage - Supply:: 2.3V ~ 2.7V, 3V ~ 3.6V

Independent Circuits:: 2

Delay Time - Propagation:: 2.1ns

Current - Output High, Low:: 24mA, 24mA

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 48-TSSOP

74ALVCH16373DGG,51 FAQ

1.How can I place an order for 74ALVCH16373DGG,51 through Aetrix?

Please submit a Request for Quotation (RFQ) for 74ALVCH16373DGG,51 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for 74ALVCH16373DGG,51 reliable?

The price and inventory of 74ALVCH16373DGG,51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74ALVCH16373DGG,51 is usually 5 days.

3.What payment methods are accepted for 74ALVCH16373DGG,51?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74ALVCH16373DGG,51 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74ALVCH16373DGG,51?

74ALVCH16373DGG,51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74ALVCH16373DGG,51 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for 74ALVCH16373DGG,51?

For technical support, including 74ALVCH16373DGG,51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74ALVCH16373DGG,51 requirements.

6.How does Aetrix verify that 74ALVCH16373DGG,51 is sourced from the original manufacturer or authorized distributors?

All 74ALVCH16373DGG,51 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 74ALVCH16373DGG,51 meets industry standards.

7.What is the process for return or replacement of 74ALVCH16373DGG,51?

All 74ALVCH16373DGG,51 units undergo pre-shipment inspection (PSI). If there is an issue with 74ALVCH16373DGG,51, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The 74ALVCH16373DGG,51 part is unused and in its original packaging.

Return procedure for 74ALVCH16373DGG,51:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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