Texas Instruments SN74LVCH16245AGQLR

Overview

SN74LVCH16245AGQLR from Texas Instruments is a 16-bit dual-octal noninverting bus transceiver designed for asynchronous bidirectional data transfer between 1.65-V to 3.6-V buses. It supports mixed-mode signal operation (5.5-V-tolerant inputs with 3.3-V V_CC), delivers 4 ns max propagation delay at 3.3 V, and features I_off for live insertion and partial-power-down protection - used in tablet baseband interconnects and industrial controller backplanes.

For engineers reviewing the SN74LVCH16245AGQLR datasheet, SN74LVCH16245AGQLR pinout, SN74LVCH16245AGQLR application, or SN74LVCH16245AGQLR equivalent, key selection criteria include its 48-pin GQL package, dual-direction control per octet (1DIR/2DIR), independent output enables (1OE/2OE), bus-hold circuitry eliminating external resistors, and verified 5.5-V input tolerance across full V_CC range (1.65–3.6 V).

Technical Context

The SN74LVCH16245AGQLR implements two independent 8-bit transceiver sections, each with dedicated direction (DIR) and output-enable (OE) controls. Its CMOS-based input structure accepts 0–5.5 V signals regardless of V_CC, enabling level translation from 5-V logic to 3.3-V domains without external components.

Active bus-hold circuitry maintains valid logic states on undriven A- and B-port inputs, while I_off disables outputs and blocks current flow when V_CC = 0 V. The device operates over –40°C to 125°C and meets JESD 22-A114 (2000-V HBM) ESD requirements.

Key Specifications

Pinout & Package

SN74LVCH16245AGQLR uses a 48-ball GQL package (56-ball grid, 0.5-mm pitch, 9.7 mm × 4.4 mm body), compatible with TVSOP footprint but offering improved thermal performance via solder-ball interconnects.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC16245ADGGR and 74ALVC16245PW, the SN74LVCH16245AGQLR uniquely combines bus-hold, I_off, and 5.5-V input tolerance in a single 48-ball package - enabling robust, resistor-free interconnects in dynamically reconfigurable systems.

Availability

SN74LVCH16245AGQLR is available at Aetrix Electronics and suitable for electronic points of sale, test and measurement equipment, wearable health devices, and tablets requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for SN74LVCH16245AGQLR 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 connectivity technologies, with over 50 years of innovation in high-reliability logic and interface solutions.

The SN74LVCH16245AGQLR belongs to TI's Widebus™ family of advanced bus-interface ICs, engineered specifically for low-voltage, high-speed bidirectional data transfer in mixed-signal portable and industrial systems.

FAQ

What is the maximum input voltage rating for SN74LVCH16245AGQLR?

The SN74LVCH16245AGQLR supports input voltages up to 5.5 V across its entire operating V_CC range (1.65–3.6 V). This allows direct interfacing with 5-V logic sources without external clamping or translation circuitry - a verified specification confirmed in Section 7.1 Absolute Maximum Ratings and Table 7.3 Recommended Operating Conditions of the SCES495C datasheet.

Does SN74LVCH16245AGQLR support hot-plug operation?

Yes, SN74LVCH16245AGQLR supports hot-plug operation via its I_off feature, which disables outputs and blocks current flow when V_CC = 0 V. Per Section 9.3 Feature Description and Table 7.5 Electrical Characteristics, I_off is specified at ±10 µA, ensuring safe insertion/removal in powered-backplane systems such as modular test equipment.

How does bus-hold functionality work on SN74LVCH16245AGQLR?

SN74LVCH16245AGQLR integrates active bus-hold circuitry on all A- and B-port inputs, maintaining valid logic states on undriven lines without external resistors. As documented in Section 9.1 Overview and Table 7.5, bus-hold current is ±45 µA at V_CC = 3 V, providing sufficient holding strength to prevent floating inputs in handheld medical devices and wearables.

What is the propagation delay of SN74LVCH16245AGQLR at 3.3 V?

The maximum propagation delay (t_pd) of SN74LVCH16245AGQLR is 4 ns at V_CC = 3.3 V, TA = 25°C, as specified in Section 1 Features and Table 7.6 Switching Characteristics. This value is measured under loaded conditions (50-pF CL, ±0.3-V swing) and enables reliable operation in 200-MHz parallel bus systems.

Which package type does SN74LVCH16245AGQLR use?

SN74LVCH16245AGQLR uses the GQL package: a 48-ball, 0.5-mm pitch, 9.7 mm × 4.4 mm body-size micro leadframe array (MLF) variant optimized for TVSOP-compatible layouts. Package dimensions and ball assignments are fully detailed in Section 14 Mechanical, Packaging, and Orderable Information and Table 1 Pin Assignments of the SCES495C datasheet.