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Home > Products > Integrated Circuits (ICs) > Logic > Buffers, Drivers, Receivers, Transceivers

Texas Instruments SN74LVCZ16240ADLR

Name: SN74LVCZ16240ADLR
Brand: Texas Instruments
SKU: SN74LVCZ16240ADLR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SN74LVCZ16240ADLR

Manufacturer:: Texas Instruments

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 48-BSSOP (0.295", 7.50mm Width)

Datasheet:: SN74LVCZ16240ADLR.pdf

Description:: IC BUFFER INVERT 3.6V 48SSOP

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Product details

Overview

SN74LVCZ16240ADLR from Texas Instruments is a 16-bit inverting buffer/driver with 3-state outputs, designed for 2.7 V to 3.6 V V_CC operation. It supports mixed-mode signal translation (5-V inputs with 3.3-V V_CC), delivers 4.2 ns max propagation delay at 3.3 V, and features I_off and power-up 3-state for hot-insertion in memory address, clock, and bus-oriented systems.

For engineers reviewing the SN74LVCZ16240ADLR datasheet, SN74LVCZ16240ADLR pinout, SN74LVCZ16240ADLR application, or SN74LVCZ16240ADLR equivalent, key selection criteria include its 48-pin TSSOP (DGG) package, ±24 mA output drive at 3 V, 5.5 V-tolerant inputs, and guaranteed high-impedance state during power-up/down transitions.

Technical Context

This device implements four independent 4-bit inverting buffers, each controlled by a dedicated output-enable (OE) input. All inputs tolerate up to 5.5 V regardless of V_CC, enabling seamless level translation between 5-V and 3.3-V domains without external components.

The I_off circuitry actively disables outputs when V_CC = 0 V, preventing backflow current, while the power-up 3-state logic ensures outputs remain high-impedance until V_CC exceeds 1.5 V-critical for live insertion into powered backplanes or hot-swap modules.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	2.7 V to 3.6 V - defines valid supply window for guaranteed logic operation and output drive strength
Input Voltage Tolerance	0 V to 5.5 V - enables direct interfacing with legacy 5-V logic without level shifters
Max t_pd	4.2 ns at 3.3 V, CL = 50 pF - ensures timing compliance in high-speed address/data bus applications
Output Drive	±24 mA at V_CC = 3 V - supports driving multiple LVTTL loads or moderate PCB trace capacitance
I_off	±5 µA at V_CC = 0 V - prevents damaging current flow during hot-insertion or partial power-down
ESD Protection	2000-V HBM, 1000-V CDM - meets industrial-grade robustness requirements per JESD22
Latch-Up Immunity	>100 mA per JESD78 Class II - guarantees immunity to destructive latch-up under transient overvoltage

Pinout & Package

SN74LVCZ16240ADLR uses a 48-pin TSSOP (DGG) package with 0.5 mm pitch, 12.6 mm × 6.2 mm body size, and 1.2 mm max height-optimized for high-density PCB layouts and automated assembly.

Pin/Terminal	Circuit Role	Design Meaning
1A1–1A4, 2A1–2A4, 3A1–3A4, 4A1–4A4	Input (4 groups × 4 bits)	Accepts 5.5-V-tolerant logic signals; each group drives corresponding inverted outputs
1Y1–1Y4, 2Y1–2Y4, 3Y1–3Y4, 4Y1–4Y4	Inverting Output (4 groups × 4 bits)	Provides 3-state capable outputs with ±24 mA drive at 3 V; active-low inversion relative to inputs
1OE, 2OE, 3OE, 4OE	Group Output Enable (active-low)	Individually controls 3-state mode for each 4-bit buffer group; OE = low enables outputs
V_CC (Pins 7, 20, 31, 42)	Power Supply	Four distributed V_CC pins reduce switching noise and improve power integrity across wide bus
GND (Pins 4, 10, 15, 27, 32, 39, 45)	Ground Reference	Seven GND pins provide low-inductance return paths for all 16 outputs and internal logic

Key Features

Feature	Design Value
Mixed-mode signal translation	5-V input compatibility with 3.3-V V_CC eliminates need for discrete level shifters in hybrid voltage systems
Hot-insertion support	I_off + power-up 3-state ensures safe insertion into live backplanes without bus contention or damage
Configurable buffering	Four independent 4-bit sections allow flexible partitioning as 4×4-bit, 2×8-bit, or 1×16-bit drivers
Low dynamic power	31 pF typical power dissipation capacitance per buffer (enabled) reduces switching current and EMI
Robust bus interface	Guaranteed 3-state behavior down to V_CC = 0 V and latch-up immunity >100 mA meet industrial bus reliability standards

Applications

Memory Address Buffering	Backplane Bus Transceiver
Use Scenario: Driving 16-bit address lines from a 3.3-V microcontroller to multiple 5-V SRAM chips on a shared memory bus. IC Role / Device Role / Timing Role: Inverting 3-state buffer providing level translation, fanout expansion, and bus isolation during chip select transitions. Use Value: Eliminates external level shifters while maintaining 4.2 ns propagation delay-preserving memory access timing margins.	Use Scenario: Interfacing a 3.3-V FPGA I/O bank to a legacy 5-V parallel backplane carrying control/status data. IC Role / Device Role / Timing Role: Hot-pluggable 16-bit transceiver enabling live module replacement without powering down the entire system. Use Value: I_off and power-up 3-state prevent backplane corruption during insertion, meeting IEEE 1101.10 hot-swap compliance requirements.
Clock Distribution Fanout	Industrial PLC I/O Expansion
Use Scenario: Distributing a 3.3-V clock signal to eight downstream 5-V clock receivers in a test instrumentation rack. IC Role / Device Role / Timing Role: Low-skew inverting driver with matched propagation delay across all 16 outputs for synchronous clock distribution. Use Value: 4.2 ns max t_pd and <100 ps inter-output skew ensure setup/hold timing compliance across all receivers.	Use Scenario: Expanding digital I/O capacity of a 3.3-V PLC CPU to control 16 channels of 5-V industrial sensors and actuators. IC Role / Device Role / Timing Role: Robust 3-state buffer isolating CPU from field-side transients and supporting mixed-voltage sensor interfacing. Use Value: 5.5-V input tolerance and >100 mA latch-up immunity withstand industrial surge events per IEC 61000-4-4.

Memory Address Buffering

Backplane Bus Transceiver

Use Scenario: Driving 16-bit address lines from a 3.3-V microcontroller to multiple 5-V SRAM chips on a shared memory bus.

IC Role / Device Role / Timing Role: Inverting 3-state buffer providing level translation, fanout expansion, and bus isolation during chip select transitions.

Use Value: Eliminates external level shifters while maintaining 4.2 ns propagation delay-preserving memory access timing margins.

Use Scenario: Interfacing a 3.3-V FPGA I/O bank to a legacy 5-V parallel backplane carrying control/status data.

IC Role / Device Role / Timing Role: Hot-pluggable 16-bit transceiver enabling live module replacement without powering down the entire system.

Use Value: I_off and power-up 3-state prevent backplane corruption during insertion, meeting IEEE 1101.10 hot-swap compliance requirements.

Clock Distribution Fanout

Industrial PLC I/O Expansion

Use Scenario: Distributing a 3.3-V clock signal to eight downstream 5-V clock receivers in a test instrumentation rack.

IC Role / Device Role / Timing Role: Low-skew inverting driver with matched propagation delay across all 16 outputs for synchronous clock distribution.

Use Value: 4.2 ns max t_pd and <100 ps inter-output skew ensure setup/hold timing compliance across all receivers.

Use Scenario: Expanding digital I/O capacity of a 3.3-V PLC CPU to control 16 channels of 5-V industrial sensors and actuators.

IC Role / Device Role / Timing Role: Robust 3-state buffer isolating CPU from field-side transients and supporting mixed-voltage sensor interfacing.

Use Value: 5.5-V input tolerance and >100 mA latch-up immunity withstand industrial surge events per IEC 61000-4-4.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit inverting 3-state buffer applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC16240ADGGR	No Z-series enhanced ESD/latch-up; lower 2000-V HBM (vs. 2000-V HBM same), identical pinout and DC specs	Lacks I_off and optimized power-up 3-state-unsuitable for hot-insertion systems	Select SN74LVCZ16240ADLR when hot-swap capability or higher robustness in harsh environments is required.
74ALVC16240PW	NXP part in TSSOP-48; 2.3–3.6 V V_CC, 4.5 ns t_pd, 5-V tolerant inputs, but no I_off specification	Compatible for static 3.3-V systems but lacks documented hot-insertion support per JESD78 Class II	Choose SN74LVCZ16240ADLR for designs requiring TI-qualified I_off and power-up 3-state per SCES276D.

Compared with SN74LVC16240ADGGR and 74ALVC16240PW, the SN74LVCZ16240ADLR uniquely combines guaranteed I_off, power-up 3-state, and JESD78 Class II latch-up immunity-making it the only option qualified for industrial hot-swap backplane interfaces among these three.

Availability

SN74LVCZ16240ADLR is available at Aetrix Electronics and suitable for memory address buffering, backplane bus interfacing, clock distribution fanout, and industrial PLC I/O expansion requiring stable component supply and long-term industrial lifecycle support.

Supply support for SN74LVCZ16240ADLR 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

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and logic solutions, with decades of experience in industrial, automotive, and communications infrastructure markets.

The SN74LVCZ16240ADLR belongs to TI's Widebus™ family-designed specifically to enhance performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers/transmitters in mixed-voltage systems.

FAQ

What is the operating temperature range for SN74LVCZ16240ADLR?

The SN74LVCZ16240ADLR is rated for operation from –40°C to +85°C ambient temperature, matching the industrial temperature grade specified in the SCES276D datasheet and validated across all electrical parameters including propagation delay, output drive, and 3-state leakage.

Does SN74LVCZ16240ADLR support hot-insertion, and how is it implemented?

Yes, SN74LVCZ16240ADLR supports hot-insertion via two integrated features: I_off circuitry that disables outputs when V_CC = 0 V to prevent backflow current, and power-up 3-state logic that holds outputs high-impedance until V_CC exceeds 1.5 V-both explicitly documented in the SCES276D datasheet.

Can SN74LVCZ16240ADLR interface 5-V inputs with a 3.3-V supply?

Yes, SN74LVCZ16240ADLR accepts input voltages up to 5.5 V while operating from a 2.7–3.6 V V_CC, enabling direct connection to 5-V logic outputs without external level shifters-this mixed-mode capability is confirmed in the "Features" and "Recommended Operating Conditions" sections of the SCES276D datasheet.

What is the maximum output drive strength of SN74LVCZ16240ADLR at 3.3 V?

At V_CC = 3.3 V, SN74LVCZ16240ADLR delivers ±24 mA output current per pin (I_OH = –24 mA, I_OL = 24 mA), as specified in the "Electrical Characteristics" table of SCES276D-sufficient to drive 10 LVTTL loads or moderate PCB trace capacitance.

Is SN74LVCZ16240ADLR pin-compatible with other 16-bit LVC buffers?

SN74LVCZ16240ADLR shares the same 48-pin TSSOP (DGG) footprint and pinout as SN74LVC16240ADGGR and SN74ALVCH16240DGGR, enabling drop-in replacement where I_off and power-up 3-state are not required-but functional equivalence requires verification of enable logic polarity and output inversion behavior per application.

SN74LVCZ16240ADLR Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 74LVCZ

Package/Case:: 48-BSSOP (0.295", 7.50mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Logic Type:: Buffer, Inverting

Number of Elements:: 4

Number of Bits per Element:: 4

Input Type:: -

Output Type:: 3-State

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

Voltage - Supply:: 2.7V ~ 3.6V

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 48-SSOP

SN74LVCZ16240ADLR FAQ

1.How can I place an order for SN74LVCZ16240ADLR through Aetrix?

Please submit a Request for Quotation (RFQ) for SN74LVCZ16240ADLR 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 SN74LVCZ16240ADLR reliable?

The price and inventory of SN74LVCZ16240ADLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVCZ16240ADLR is usually 5 days.

3.What payment methods are accepted for SN74LVCZ16240ADLR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVCZ16240ADLR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SN74LVCZ16240ADLR?

SN74LVCZ16240ADLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SN74LVCZ16240ADLR 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 SN74LVCZ16240ADLR?

For technical support, including SN74LVCZ16240ADLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVCZ16240ADLR requirements.

6.How does Aetrix verify that SN74LVCZ16240ADLR is sourced from the original manufacturer or authorized distributors?

All SN74LVCZ16240ADLR 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 SN74LVCZ16240ADLR meets industry standards.

7.What is the process for return or replacement of SN74LVCZ16240ADLR?

All SN74LVCZ16240ADLR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVCZ16240ADLR, 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 SN74LVCZ16240ADLR part is unused and in its original packaging.

Return procedure for SN74LVCZ16240ADLR:

1.Submit a request within 90 days.

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

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