Renesas HA9P4905-5Z

Overview

HA9P4905-5Z from Intersil is a monolithic quad precision comparator with 130ns response time, 2.0mV max offset voltage, and selectable logic-level outputs compatible with TTL/CMOS without external components. It operates from single +5V or dual ±15V supplies and is used in threshold detection, zero-crossing circuits, and microprocessor analog interfaces.

For engineers reviewing the HA9P4905-5Z datasheet, HA9P4905-5Z pinout, HA9P4905-5Z application, or HA9P4905-5Z equivalent, this page delivers verified specifications, SOIC-16 package details, real-world use cases, and two confirmed alternative parts for signal-level decision-making in mixed-signal systems.

Technical Context

The HA9P4905-5Z implements four independent high-speed comparators with current-driven output stages that interface directly to VLOGIC+ and VLOGIC− rails, enabling programmable logic-high/low levels. Its input stage supports common-mode voltages from V− to (V+) − 2.4V and exhibits <10nA offset current at 25°C.

Designed for analog/digital boundary applications, it eliminates ground coupling noise between domains via isolated supply paths for analog (V+, V−) and logic (VLOGIC+, VLOGIC−) sections. Channel-to-channel crosstalk is virtually absent under simultaneous high-frequency operation when ΔVIN ≥ ±VOS.

Key Specifications

Pinout & Package

HA9P4905-5Z is housed in a 16-lead SOIC package (JEDEC MS-013-AA, M16.3 footprint), 10.10 mm × 7.40 mm × 2.65 mm body size, with 1.27 mm lead pitch. Thermal resistance θJA = 100°C/W (typical, on evaluation board).

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM339DR and TLV3704IPW, HA9P4905-5Z uniquely combines sub-200ns speed, <2mV offset, programmable logic outputs, and true dual-supply analog operation - making it irreplaceable in high-fidelity mixed-signal interfaces demanding precision and timing integrity.

Availability

HA9P4905-5Z is available at Aetrix Electronics and suitable for threshold detection, zero-crossing circuits, and microprocessor analog interfaces requiring stable component supply across industrial and test equipment production cycles.

Supply support for HA9P4905-5Z 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 analog semiconductor designer specializing in precision signal conditioning, power management, and interface ICs.

The HA-4900 family was engineered for high-accuracy, high-speed signal level detection in mixed analog/digital systems - targeting data acquisition, test instrumentation, and real-time control interfaces.

FAQ

What supply configurations does HA9P4905-5Z support?

The HA9P4905-5Z supports three configurations: (1) dual ±15V analog supplies (V+/V−) with separate 0–15V/−15–0V logic rails (VLOGIC+/VLOGIC−); (2) single +5V analog supply (V+ = +5V, V− = GND) with VLOGIC+ = +5V and VLOGIC− = GND; (3) single +15V analog supply with logic rails tied accordingly. All modes maintain full 130ns response and 2mV offset performance.

Does HA9P4905-5Z require external pull-up resistors on its outputs?

No. HA9P4905-5Z features an active pull-up/pull-down output stage driven by VL+ and VL− terminals. When VL+ = +5V and VL− = GND, outputs swing between ~0.3V (logic low) and ~4.2V (logic high) with 3mA drive strength - eliminating need for external resistors in standard TTL/CMOS interfacing.

Can HA9P4905-5Z operate with input signals below ground?

Yes - but with caution. The HA9P4905-5Z input common-mode range extends down to V−. If V− = GND, inputs can go slightly negative (to ~−0.3V) due to C-B junction forward bias. For larger negative excursions, a series current-limiting resistor (<1kΩ) is required to keep input current below 5mA, as specified in Absolute Maximum Ratings.

What is the maximum operating temperature for HA9P4905-5Z?

The HA9P4905-5Z is rated for 0°C to +75°C ambient operation, per its ordering code "-5". This distinguishes it from the HA-4900-2 (−55°C to +125°C) and HA-4902-2 (−55°C to +125°C, MIL-STD-883). Junction temperature must remain ≤150°C for the SOIC plastic package.

How does HA9P4905-5Z achieve immunity to analog-digital ground noise?

The HA9P4905-5Z separates analog (V+/V−) and logic (VLOGIC+/VLOGIC−) supply domains with dedicated internal routing. Its design prevents ground coupling between analog and digital sections - allowing V− and VLOGIC− to be connected at a single system star point while rejecting noise on the logic return path, as validated in application circuits.