Renesas 74LVCH16245APAG8

Overview

74LVCH16245APAG8 from Renesas Electronics is a 3.3V CMOS 16-bit bus transceiver with 3-state outputs, 5V-tolerant I/O, and integrated bus-hold functionality. It operates across –40°C to +85°C, supports bidirectional data flow between two 8-bit or one 16-bit bus, and delivers ±24mA drive strength for robust signal integrity in mixed-voltage systems.

For engineers reviewing the 74LVCH16245APAG8 datasheet, 74LVCH16245APAG8 pinout, 74LVCH16245APAG8 application, or 74LVCH16245APAG8 equivalent, key selection criteria include 5V tolerance on all I/O pins, bus-hold retention for floating-input immunity, industrial temperature operation, and low-skew (≤1 ns) switching performance at 3.3V supply.

Technical Context

The 74LVCH16245APAG8 implements dual independent 8-bit transceiver sections controlled by separate DIR and OE pins per section, enabling flexible partitioning of data paths. Its hysteresis-equipped inputs improve noise margin, while bus-hold circuitry actively maintains last valid logic state on un-driven inputs without external resistors.

It uses advanced dual-metal CMOS technology to achieve CMOS power levels (0.4 μW typical static ICC) alongside high-speed switching: tPLH/tPHL ≤ 4 ns and tSK(o) ≤ 1 ns at VCC = 3.3V. All I/O pins tolerate 0–5.5V input voltages regardless of VCC, supporting seamless level translation between 3.3V and 5V domains.

Key Specifications

Pinout & Package

74LVCH16245APAG8 is housed in a 48-pin TSSOP (Thin Shrink Small Outline Package) with 0.5 mm pitch, JEDEC MO-153 compliant, and RoHS-compliant green molding compound.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC16245ADGGR and 74ALVC16245PAG, the 74LVCH16245APAG8 uniquely combines bus-hold, 5V tolerance, and sub-4ns propagation delay in a single industrial-grade package-making it optimal for mixed-voltage systems requiring zero-BOM signal integrity and robustness against floating nodes.

Availability

74LVCH16245APAG8 is available at Aetrix Electronics and suitable for industrial PLC backplanes, telecom line card interconnects, and automotive diagnostic gateways requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for 74LVCH16245APAG8 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

Renesas Electronics Corporation is a global semiconductor leader delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, infrastructure, and IoT applications.

The 74LVCH16245APAG8 belongs to Renesas' LVC family of low-voltage CMOS logic devices, engineered specifically for high-reliability, mixed-voltage digital interfacing in harsh industrial and telecom environments.

FAQ

What is the operating temperature range of the 74LVCH16245APAG8?

The 74LVCH16245APAG8 is rated for industrial temperature operation from –40°C to +85°C. This range is guaranteed across all specified DC and AC electrical characteristics, including propagation delay, output drive, and bus-hold functionality. The device's thermal design and qualification testing ensure stable performance in factory automation, outdoor telecom equipment, and vehicle under-hood applications where ambient extremes occur.

Does the 74LVCH16245APAG8 support level translation between 3.3V and 5V systems?

Yes, the 74LVCH16245APAG8 supports true bidirectional level translation: all 32 I/O pins are 5V tolerant with VI ranging from 0V to 5.5V regardless of VCC (2.7–3.6V). This allows direct connection to 5V logic without external clamping or resistive dividers. The device maintains full timing compliance and ±24mA drive capability across both voltage domains, making it ideal for mixed-supply backplanes and memory expansion interfaces.

How does the bus-hold feature work on the 74LVCH16245APAG8?

The 74LVCH16245APAG8 implements bus-hold on all A- and B-side I/O pins (1A1–1A8, 1B1–1B8, 2A1–2A8, 2B1–2B8). When an input floats, internal feedback circuitry sources or sinks ±75μA (typical) to retain the last valid logic state. This eliminates need for external pull-up/down resistors, reduces BOM count, prevents metastability, and improves noise immunity-especially critical in hot-swap or intermittently connected subsystems.

What is the maximum output skew specification for the 74LVCH16245APAG8?

The 74LVCH16245APAG8 specifies maximum output skew tSK(o) ≤ 1 ns under standard conditions (VCC = 3.3V ± 0.3V, TA = 25°C). This parameter measures timing deviation between any two outputs switching in the same direction within the same package. Low skew ensures deterministic parallel data capture across all 16 bits, which is essential for high-speed memory interfaces, FPGA configuration busses, and synchronous backplane designs.

Can the 74LVCH16245APAG8 be used as two independent 8-bit transceivers?

Yes, the 74LVCH16245APAG8 contains two fully independent 8-bit transceiver sections (Section 1: pins 1DIR/1OE/1A1–1A8/1B1–1B8; Section 2: pins 2DIR/2OE/2A1–2A8/2B1–2B8). Each section has dedicated DIR and OE controls, allowing concurrent operation in different directions or enable states. This architecture supports flexible data routing-for example, A→B on Section 1 while B→A on Section 2-without cross-talk or timing interaction between sections.