Texas Instruments SN74LVCZ16245ADLR

Overview

SN74LVCZ16245ADLR from Texas Instruments is a 16-bit noninverting bus transceiver with 3-state outputs, designed for asynchronous bidirectional data transfer between 2.7-V to 3.6-V buses. It supports mixed-mode signaling (5-V inputs with 3.3-V V_CC), delivers max propagation delay of 3.7 ns at 3.3 V, and features I_off and power-up 3-state for hot insertion in backplane or modular systems.

For engineers reviewing the SN74LVCZ16245ADLR datasheet, SN74LVCZ16245ADLR pinout, SN74LVCZ16245ADLR application, or SN74LVCZ16245ADLR equivalent, key selection criteria include 48-pin SSOP package compatibility, dual-octal directional control (DIR/OE), 5.5-V input tolerance, and guaranteed high-impedance state during power sequencing.

Technical Context

The SN74LVCZ16245ADLR implements two independent 8-bit transceiver sections, each with separate DIR and OE controls, enabling flexible A↔B or B↔A data flow per section. Its I_off circuitry actively disables outputs when V_CC = 0, preventing back-current during hot insertion.

Input voltage tolerance up to 5.5 V-exceeding V_CC-enables direct interfacing with legacy 5-V logic without level shifters. Power-up 3-state ensures outputs remain high-impedance until V_CC exceeds 1.5 V, eliminating bus contention during supply ramp-up.

Key Specifications

Pinout & Package

SN74LVCZ16245ADLR uses a 48-pin SSOP (DL) package with 0.5-mm pitch, 12.4 mm × 6.2 mm body size, and 1.2-mm max height - optimized for space-constrained PCB layouts while maintaining hand-solderability and reflow compatibility.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar bus transceiver applications.

Compared with SN74LVCZ16245ADLR, SN74LVC16245ADLR omits critical hot-insertion features, while 74ALVC16245PW trades SSOP compatibility for improved drive capability in TSSOP - making SN74LVCZ16245ADLR the optimal choice for space-constrained, hot-plug-enabled 3.3-V/5-V mixed-bus systems requiring guaranteed isolation during power transitions.

Availability

SN74LVCZ16245ADLR is available at Aetrix Electronics and suitable for industrial backplanes, embedded module interconnects, and automated test fixtures requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for SN74LVCZ16245ADLR 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, scalability, and system-level integration.

The SN74LVCZ16245ADLR belongs to TI's Widebus™ family of high-speed logic devices, engineered specifically for robust, low-latency parallel bus bridging in mixed-voltage industrial and test equipment applications.

FAQ

What is the maximum input voltage the SN74LVCZ16245ADLR can safely accept?

The SN74LVCZ16245ADLR accepts input voltages from 0 V to 5.5 V - exceeding its 2.7–3.6-V V_CC range. This allows direct interfacing with 5-V logic families without external level-shifting circuitry. The absolute maximum rating is 6.5 V, but sustained operation above 5.5 V violates recommended conditions and risks reliability degradation.

Does the SN74LVCZ16245ADLR support hot insertion, and how is it implemented?

Yes, the SN74LVCZ16245ADLR supports hot insertion via two integrated features: I_off circuitry disables outputs when V_CC = 0, preventing back-current, and power-up 3-state holds outputs in high-impedance until V_CC exceeds 1.5 V. These mechanisms are verified per JEDEC JESD78 Class II latch-up and JESD22 ESD standards, making SN74LVCZ16245ADLR suitable for modular backplane and plug-in card applications.

What is the pin configuration and package type of the SN74LVCZ16245ADLR?

The SN74LVCZ16245ADLR uses a 48-pin SSOP (Shrink Small Outline Package) with DL suffix, measuring 12.4 mm × 6.2 mm × 1.2 mm max height and 0.5-mm lead pitch. Pin 1 is located at the top-left corner with a beveled edge marker; the layout separates dual 8-bit A/B ports with dedicated DIR/OE controls and distributed V_CC/GND pins for noise reduction.

Can the SN74LVCZ16245ADLR be used as two independent 8-bit transceivers?

Yes, the SN74LVCZ16245ADLR is internally structured as two independent 8-bit transceiver sections (1A/1B and 2A/2B), each with its own DIR and OE inputs. This allows simultaneous bidirectional communication on separate buses - for example, transferring data from a 3.3-V CPU to a 5-V peripheral on one section while routing sensor data from a 5-V ADC to a 3.3-V FPGA on the other - without cross-talk or timing interaction.

What are the thermal characteristics of the SN74LVCZ16245ADLR in its SSOP package?

The SN74LVCZ16245ADLR in the DL (SSOP) package has a junction-to-ambient thermal resistance (θ_JA) of 63°C/W under standard JEDEC PCB mounting conditions. This value assumes a 2-layer board with 1-in² copper pour per side. For continuous operation at full drive strength (±24 mA per output), ambient temperature must remain ≤75°C to keep junction temperature below 125°C - consistent with its –40°C to 85°C industrial operating range.