Renesas IDT74LVC4245APGG8

Overview

IDT74LVC4245APGG8 from Integrated Device Technology is an octal noninverting bus transceiver with dual-supply voltage translation (3.3V ↔ 5V), ±24mA drive strength, rail-to-rail output swing, 5V-tolerant I/O, and industrial temperature range (–40°C to +85°C). It enables asynchronous bidirectional data transfer between mixed-voltage buses in embedded control and interface subsystems.

For engineers reviewing the IDT74LVC4245APGG8 datasheet, IDT74LVC4245APGG8 pinout, IDT74LVC4245APGG8 application, or IDT74LVC4245APGG8 equivalent, key selection criteria include VCCA/VCCB supply separation, DIR/OE control logic, 3-state output timing (tPLZ ≤ 9.8 ns), and hot-insertion capability in voltage-level bridging designs.

Technical Context

The IDT74LVC4245APGG8 implements a dual-rail CMOS architecture with independent VCCA (5V ±0.5V) and VCCB (2.7V–3.6V) supplies, enabling true bidirectional level shifting without direction-dependent voltage constraints. Its hysteresis-equipped inputs improve noise immunity in noisy industrial environments.

Direction control is managed by the active-HIGH DIR pin, while OE (active-LOW) forces both ports into high-impedance state regardless of DIR. Propagation delays are symmetric: tPLH/tPHL ≤ 6.7 ns (A→B) and ≤ 6.3 ns (B→A), supporting reliable operation up to 100 MHz system clock edges.

Key Specifications

Pinout & Package

Package: 24-pin TSSOP (Green, RoHS-compliant), body size 7.8 mm × 4.4 mm, 0.65 mm pitch.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar bus transceiver and level-shifting applications.

Compared with SN74LVC4245APWR and 74AVC4245PW,118, the IDT74LVC4245APGG8 provides guaranteed 5V-tolerant I/O on all pins and full industrial temperature qualification without derating - critical for robustness in factory automation and infrastructure equipment.

Availability

IDT74LVC4245APGG8 is available at Aetrix Electronics and suitable for industrial PLC backplanes, automotive body control modules, telecom line cards, and medical diagnostic equipment requiring stable component supply and long-term lifecycle assurance.

Supply support for IDT74LVC4245APGG8 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 IDT74LVC4245APGG8 belongs to IDT's LVC logic family, engineered specifically for reliable voltage translation and bus interfacing in mixed-signal industrial systems where signal integrity and thermal stability are critical.

FAQ

What is the maximum capacitive load the IDT74LVC4245APGG8 can drive while maintaining specified timing?

The IDT74LVC4245APGG8 is characterized with CL = 50 pF in its switching specifications, and its ±24 mA drive strength ensures valid VOH/VOL levels under that load. At 50 pF, propagation delays remain within datasheet limits (≤6.7 ns). Driving >50 pF may increase rise/fall times and delay skew, requiring layout optimization or buffer staging for timing-critical paths.

Can the IDT74LVC4245APGG8 operate with VCCB = 2.5V?

No - the IDT74LVC4245APGG8 is specified only for VCCB = 2.7V to 3.6V per its DC electrical characteristics table. Operation at 2.5V falls outside guaranteed functionality and may result in invalid VIH/VIL thresholds, reduced noise margin, or output instability. For 2.5V interfaces, consider SN74LVC4245A or 74AVC4245.

Is the IDT74LVC4245APGG8 pin-compatible with the IDT74LVC4245APG?

Yes - IDT74LVC4245APGG8 and IDT74LVC4245APG share identical 24-pin TSSOP package, pinout, and logic function. The "G" suffix denotes green/RoHS compliance; "GG8" indicates tape-and-reel packaging. Electrical and thermal specs are identical; only packaging and reel orientation differ.

Does the IDT74LVC4245APGG8 require external pull-up or pull-down resistors on DIR or OE?

No - DIR and OE have internal weak pull-downs (per IDT application note AN-72), ensuring defined LOW state during power-up or floating conditions. External resistors are unnecessary unless specific timing or noise requirements demand stronger biasing in high-EMI environments.

How does the IDT74LVC4245APGG8 handle simultaneous switching noise (SSN) compared to standard LVC transceivers?

The IDT74LVC4245APGG8 incorporates optimized output driver design and rail-to-rail swing to reduce ΔI/Δt-induced SSN. Its ±24 mA drivers switch with controlled edge rates, and the dual-supply architecture isolates VCCA/VCCB ground currents - lowering shared-impedance coupling versus single-rail alternatives.