Renesas IDT74LVCC3245APGG

Overview

IDT74LVCC3245APGG from Integrated Device Technology is an octal noninverting bus transceiver with dual-supply voltage translation (VCCA = 2.3–3.6 V, VCCB = 3–5.5 V), ±24 mA drive strength, 3-state outputs, and 5 V-tolerant I/O. It enables bidirectional data transfer between 2.5/3.3 V and 3.3/5 V buses in mixed-voltage systems.

For engineers reviewing the IDT74LVCC3245APGG datasheet, IDT74LVCC3245APGG pinout, IDT74LVCC3245APGG application, or IDT74LVCC3245APGG equivalent, key selection considerations include voltage-level translation directionality, hot-insertion support, industrial temperature range (–40°C to +85°C), and TSSOP-24 package compatibility with high-density PCB layouts.

Technical Context

The IDT74LVCC3245APGG implements asynchronous bidirectional data flow controlled by DIR (direction) and OE (output enable) inputs. Its dual-rail architecture isolates A-port logic levels (tracking VCCA) from B-port levels (tracking VCCB), enabling true level-shifting without external biasing.

Each port supports independent 3-state control and rail-to-rail output swing for enhanced noise immunity. The device features ±24 mA output drivers on both ports, low static power (0.4 µW typ.), and 5 V tolerance on all I/O pins-critical for legacy interface integration and hot-swap capability.

Key Specifications

Pinout & Package

Package: 24-pin TSSOP (Thin Shrink Small Outline Package), green (lead-free), 0.65 mm pitch, body size 7.8 mm × 4.4 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC4245APWR and 74AVC164245DGGR, the IDT74LVCC3245APGG uniquely combines 5 V tolerance, rail-to-rail swing, and industrial temperature rating in a 24-pin TSSOP - making it the only option among the three qualified for direct 5 V legacy bus interfacing without external components.

Availability

IDT74LVCC3245APGG is available at Aetrix Electronics and suitable for industrial automation, telecom infrastructure, and automotive diagnostic equipment requiring stable component supply across extended temperature and mixed-voltage conditions.

Supply support for IDT74LVCC3245APGG 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

Integrated Device Technology (IDT), now part of Renesas Electronics, designs high-performance timing, interface, and memory solutions for communications, computing, and industrial markets.

The IDT74LVCC3245APGG belongs to IDT's LVCC family of voltage-translating transceivers, engineered specifically for robust interoperability between heterogeneous voltage domains in mission-critical infrastructure equipment.

FAQ

What voltage domains does the IDT74LVCC3245APGG support for level translation?

The IDT74LVCC3245APGG supports bidirectional translation between a 2.3–3.6 V domain (VCCA, A-port) and a 3–5.5 V domain (VCCB, B-port). This enables direct interfacing of 2.5 V/3.3 V logic with 3.3 V/5 V systems without external biasing or level-shifting circuitry. The IDT74LVCC3245APGG maintains full 5 V tolerance on all I/O pins regardless of VCCA setting.

Does the IDT74LVCC3245APGG support hot insertion, and how is it implemented?

Yes, the IDT74LVCC3245APGG supports hot insertion through its 5 V-tolerant I/O structure, power-off leakage limits (±50 µA), and controlled output-enable behavior. When VCCA or VCCB is unpowered, the IDT74LVCC3245APGG enters a high-impedance state with minimal current injection, preventing bus contention or damage during live card insertion into powered backplanes.

What is the maximum data rate supported by the IDT74LVCC3245APGG in practical PCB layouts?

The IDT74LVCC3245APGG achieves sub-10 ns propagation delay (e.g., 9.9 ns max A→B at VCCA=2.7 V, VCCB=3.3 V), supporting reliable operation up to ~100 MHz in point-to-point or lightly loaded bus configurations. Real-world data rate depends on trace capacitance and termination; the IDT74LVCC3245APGG's ±24 mA drive ensures signal integrity up to 50 pF load with <1 ns skew across all eight channels.

How does the IDT74LVCC3245APGG handle direction control and bus isolation?

The IDT74LVCC3245APGG uses two dedicated control inputs: DIR selects data direction (LOW = B→A, HIGH = A→B), and OE (active-low) disables both ports simultaneously into high-impedance. This dual-control scheme allows precise arbitration in shared-bus systems. When OE is HIGH, the IDT74LVCC3245APGG fully isolates A and B buses - critical for multi-master or hot-swap topologies.

Is the IDT74LVCC3245APGG pin-compatible with earlier IDT74LVCC3245 variants?

Yes, the IDT74LVCC3245APGG is pin-compatible with the IDT74LVCC3245A (same TSSOP-24 footprint, identical pinout, and functionally identical electrical behavior). The "PGG" suffix denotes green (lead-free) packaging per RoHS, with no change to timing, drive strength, or voltage specifications - enabling drop-in replacement in existing industrial and telecom designs.