Renesas HA9P4905-5

Overview

HA9P4905-5 from Intersil is a monolithic quad precision comparator optimized for high-speed, low-offset signal level detection in mixed-signal systems. It delivers 130ns response time, 2.0mV max offset voltage, and 10nA max offset current at 25°C, operating from single +5V or dual ±15V supplies with logic-level programmable outputs compatible with TTL/CMOS without external components. It is used in threshold detection, zero-crossing circuits, and microprocessor analog interfaces.

For engineers reviewing the HA9P4905-5 datasheet, HA9P4905-5 pinout, HA9P4905-5 application, or HA9P4905-5 equivalent, key selection considerations include its SOIC-16 package, 0°C to 75°C temperature range, active pull-up/pull-down output architecture, selectable VLOGIC± supply interface, and channel-to-channel isolation critical for noise-sensitive data acquisition and test equipment design.

Technical Context

The HA9P4905-5 integrates four independent comparators on a single die with fully differential inputs capable of sensing signals down to ground level under single-supply operation. Its input stage uses matched transistor pairs to achieve low offset and bias current, while the current-driven output stage accepts separate VLOGIC+ and VLOGIC− rails to directly drive logic families without level-shifting components.

This architecture enables true analog-digital domain separation: analog supply pins (V+, V−) define input common-mode range up to (V+) − 2.4V, while logic supply pins (VL+, VL−) set output swing boundaries-allowing bipolar output (±15V), unipolar high-side (0–5V), or negative swing configurations without PCB layout compromises.

Key Specifications

Pinout & Package

HA9P4905-5 is housed in a 16-lead SOIC package (JEDEC MS-013-AA, M16.3 drawing), measuring 10.10mm × 7.40mm × 2.65mm with gull-wing leads and 1.27mm pitch. Thermal resistance θJA is 100°C/W, suitable for board-level power dissipation up to 350mW at 70°C ambient.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad precision comparator applications.

Compared with LM339DR and TLV3704IPW, HA9P4905-5 uniquely combines 130ns speed, 2.0mV offset, and independently configurable logic supply rails-making it the only choice for high-accuracy, high-speed, mixed-supply analog-digital boundary applications requiring guaranteed timing and noise immunity.

Availability

HA9P4905-5 is available at Aetrix Electronics and suitable for data acquisition systems, test equipment, and microprocessor analog interface networks requiring stable component supply across commercial temperature ranges and long-term production continuity.

Supply support for HA9P4905-5 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

Intersil Corporation (now part of Renesas Electronics) is a U.S.-based semiconductor company specializing in precision analog, power management, and interface ICs for industrial, aerospace, and test & measurement markets.

The HA-4900 series-including HA9P4905-5-is designed specifically for high-fidelity signal detection in mixed-signal environments where analog accuracy and digital timing integrity must coexist without compromise.

FAQ

What is the maximum supply voltage rating for HA9P4905-5?

The HA9P4905-5 has an absolute maximum supply voltage of 33V between V+ and V− terminals, and 18V between VL+ and VL− terminals. Operation beyond these limits risks permanent damage. For reliable long-term use, keep total power dissipation below 350mW at 70°C ambient to maintain junction temperature under 150°C-the rated maximum for its plastic SOIC package.

Does HA9P4905-5 support single-supply operation with ground-referenced inputs?

Yes, HA9P4905-5 supports true single-supply operation: connect V+ to +5V, V− to GND, VL+ to +5V, and VL− to GND. Its input common-mode range extends to V− (GND), allowing direct sensing of signals referenced to ground-critical for zero-crossing detectors and battery-monitoring circuits where negative input swings are absent.

How does the VLOGIC± interface affect HA9P4905-5 output voltage levels?

The HA9P4905-5 output logic states are defined solely by VL+ and VL−: VOH ≥ VL+ − 1.5V (min 3.5V at VL+ = 5V), VOL ≤ VL− + 0.4V (max 0.4V at VL− = GND). This decouples output swing from analog supplies, enabling direct interface to 3.3V, 5V, or 15V logic families without external level shifters-unlike comparators with fixed-output architectures.

Can unused comparator sections in HA9P4905-5 be left floating?

No-unused comparator inputs must not be left floating. Tie each unused inverting and non-inverting input pair to a stable differential voltage (e.g., +IN to V+, −IN to V−) to prevent output chatter caused by noise coupling or input bias current imbalance. Leaving inputs unconnected may cause erratic output switching and increased supply current.

Is HA9P4905-5 pin-compatible with other HA-4900 series variants?

Yes, HA9P4905-5 shares identical pinout and footprint with HA-4900-2 (CERDIP) and HA-4905-5 (CERDIP/PDIP) per the same functional block diagram and top-view pin assignment. All variants use the same 16-pin configuration: inputs on pins 1–8, outputs on pins 9–10 and 13–14, and supplies on pins 11–12 and 15–16-enabling direct SOIC replacement in existing layouts.