Diodes Incorporated PI5C3245S

Overview

PI5C3245 from Diodes Incorporated is an 8-bit, 2-port CMOS bus switch with 5 Ω on-resistance, active-low Bus Enable (BE) control, and pin compatibility with 74FCT245 logic devices. It enables direct, low-noise interconnection between two 8-bit buses (A0–A7 and B0–B7) in notebook and embedded systems requiring ultra-low quiescent power (0.2 μA typical) and near-zero propagation delay.

For engineers reviewing the PI5C3245 datasheet, PI5C3245 pinout, PI5C3245 application, or PI5C3245 equivalent, key selection criteria include verified 5 Ω R_ON, BE-controlled bidirectional switching, TSSOP/QSOP package options, 0.25 ns propagation delay contribution, and RoHS/Green compliance for space-constrained portable electronics.

Technical Context

The PI5C3245 implements a passive analog switch architecture-no internal logic or level-shifting-where conduction occurs only when BE is asserted low, connecting A and B ports with minimal RC delay. Its 5 Ω R_ON ensures signal integrity across 50 pF loads, and its 6 pF input capacitance limits loading on driving sources.

It operates over –40°C to +85°C at V_CC = 5 V ±5%, with guaranteed VIH ≥ 2.0 V and VIL ≤ 0.8 V, supporting TTL-compatible control inputs. Quiescent current remains below 0.1 μA (min) and 3.0 μA (max), enabling battery-sensitive applications without compromising switching speed.

Key Specifications

Pinout & Package

Available in 20-pin TSSOP (L20) and QSOP (Q20) packages. Both are lead-free, halogen- and antimony-free "Green" compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit bus switch applications.

Compared with SN74CBT3245APWR and 74LVC245APW, the PI5C3245 delivers lower static power and true 5V tolerance, making it optimal for legacy 5V notebook subsystems where pin compatibility and zero-delay transparency are design-critical.

Availability

PI5C3245 is available at Aetrix Electronics and suitable for notebook system bus isolation, embedded peripheral multiplexing, legacy interface adaptation, and test equipment signal routing requiring stable component supply and long-term lifecycle support.

Supply support for PI5C3245 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-performance, energy-efficient components for computing, consumer, and industrial markets.

The PI5C3245 belongs to Diodes' high-speed bus switch product line, engineered specifically for low-power, low-distortion signal routing in portable 5V systems where pin compatibility and minimal timing impact are essential.

FAQ

What is the maximum operating voltage for PI5C3245?

The PI5C3245 is rated for V_CC = 5 V ±5%, with absolute maximum supply voltage of 7 V. Input and output pins tolerate –0.5 V to 7 V, enabling safe operation with overshoot or undershoot transients common in hot-swap and mixed-voltage environments.

Does PI5C3245 support bidirectional signal flow without direction control?

Yes. The PI5C3245 is a passive analog switch with no internal direction logic. When BE is low, A0–A7 and B0–B7 are electrically shorted, allowing seamless bidirectional signal transmission-identical to a wire-with no latency or polarity inversion.

Can PI5C3245 be used in 3.3V systems?

No. The PI5C3245 is specified only for 5 V operation (V_CC = 5 V ±5%). Its VIH/VIL thresholds and R_ON performance are optimized for 5 V logic levels; operation at 3.3 V is not characterized and may result in unreliable BE control or elevated R_ON.

Is thermal derating required for continuous 120mA output current?

Yes. While the device supports up to 120 mA DC output current per pin, sustained current above 50 mA requires PCB copper pour and thermal vias to maintain junction temperature within –40°C to +85°C ambient. Power dissipation must stay below 0.5 W total.