Texas Instruments SN74LVCZ16240ADGVR

Overview

SN74LVCZ16240ADGVR 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 operation (5-V inputs with 3.3-V V_CC), delivers max t_pd of 4.2 ns at 3.3 V, and features I_off and power-up 3-state for hot-insertion in memory address, clock, and bus-transceiver applications.

For engineers reviewing the SN74LVCZ16240ADGVR datasheet, SN74LVCZ16240ADGVR pinout, SN74LVCZ16240ADGVR application, or SN74LVCZ16240ADGVR equivalent, key selection criteria include 3.3-V supply compatibility, 5.5-V tolerant inputs, 16-channel inverting 3-state drive capability, thermal performance (θ_JA = 58°C/W), and TSSOP-48 packaging for high-density PCB layouts.

Technical Context

This device implements four independent 4-bit inverting buffers, each controlled by its own output-enable (OE) input, enabling flexible partitioning as one 16-bit, two 8-bit, or four 4-bit drivers. All inputs tolerate up to 5.5 V regardless of V_CC, supporting level translation in mixed-voltage systems.

During power-up/down (V_CC < 1.5 V), outputs enter high-impedance state via integrated power-up 3-state circuitry; I_off protection disables outputs at V_CC = 0 V to prevent backflow current. Latch-up immunity exceeds 100 mA per JESD 78 Class II, and ESD protection meets 2000-V HBM and 1000-V CDM.

Key Specifications

Pinout & Package

TSSOP-48 package (DGV), 12.6 mm × 6.2 mm × 1.2 mm max height, lead pitch 0.5 mm, RoHS-compliant NIPDAU finish, MSL Level-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVCZ16240ADGVR, SN74LVC16240ADGGR omits Z-series protection features but offers identical timing and pin compatibility, while 74ALVC16240PW provides functional equivalence with reduced latch-up and ESD margins-making SN74LVCZ16240ADGVR the sole choice for hot-swap–critical designs.

Availability

SN74LVCZ16240ADGVR is available at Aetrix Electronics and suitable for memory subsystems, clock tree distribution, hot-pluggable modules, and mixed-voltage bus interfaces requiring stable component supply across industrial temperature ranges (–40°C to 85°C).

Supply support for SN74LVCZ16240ADGVR 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 delivering analog, embedded processing, and connectivity solutions with emphasis on reliability, precision, and power efficiency.

The SN74LVCZ16240ADGVR belongs to TI's Widebus™ family, engineered specifically to enhance density and performance of 3-state memory address drivers, clock drivers, and bus-oriented receivers/transmitters in space-constrained, high-speed digital systems.

FAQ

What is the maximum input voltage tolerance for SN74LVCZ16240ADGVR?

The SN74LVCZ16240ADGVR accepts input voltages up to 5.5 V across its entire operating V_CC range (2.7 V to 3.6 V). This allows direct connection to 5-V logic sources without external level-shifting circuitry, making it ideal for mixed-voltage system interfacing. The specification is verified per absolute maximum ratings and confirmed in the recommended operating conditions table of the SCES276D datasheet.

Does SN74LVCZ16240ADGVR support hot insertion, and how is it implemented?

Yes, SN74LVCZ16240ADGVR supports hot insertion via two integrated features: I_off circuitry that disables outputs at V_CC = 0 V to block reverse current, and power-up 3-state logic that forces outputs into high-impedance during V_CC ramp (0–1.5 V). These mechanisms are explicitly documented in the functional description and absolute maximum ratings sections of the official TI datasheet SCES276D.

What is the propagation delay of SN74LVCZ16240ADGVR at 3.3 V, and under what test conditions?

The maximum propagation delay (t_pd) of SN74LVCZ16240ADGVR is 4.2 ns at V_CC = 3.3 V ± 0.3 V with C_L = 50 pF, as specified in the switching characteristics table of SCES276D. This value applies to the A-to-Y path and reflects worst-case performance across –40°C to 85°C, ensuring timing margin compliance in high-speed bus applications.

How many independent output-enable controls does SN74LVCZ16240ADGVR provide?

SN74LVCZ16240ADGVR provides four independent active-low output-enable inputs: 1OE (Pin 48), 2OE (Pin 4), 3OE (Pin 24), and 4OE (Pin 7). Each controls a separate 4-bit output bank (Y1–Y4), enabling granular bus isolation-e.g., disabling only memory address lines while keeping data lines active. This architecture is confirmed in the logic diagram and pin configuration diagram of SCES276D.

What package type and thermal performance does SN74LVCZ16240ADGVR use?

SN74LVCZ16240ADGVR uses the TVSOP (DGV) package: 48-pin, 0.5-mm pitch, 12.6 mm × 6.2 mm footprint, 1.2 mm max height. Its junction-to-ambient thermal resistance (θ_JA) is 58°C/W, measured per JESD 51-7, enabling reliable operation at 85°C ambient with typical power dissipation below 300 mW. Package mechanical data and thermal metrics are published in TI's DGG0048A outline drawing and PACKAGE OPTION ADDENDUM.