Renesas X9258TS24Z-2.7

Overview

X9258TS24Z-2.7 from Intersil (now Renesas) is a quad digital potentiometer IC implementing four independent 256-tap resistor arrays with volatile wiper counters and nonvolatile data registers, operating from dual analog supplies (±2.7V to ±5.5V) and digital supply (2.7V–5.5V), used for precision gain/offset trimming in audio front-ends and sensor signal conditioning circuits.

For engineers reviewing the X9258TS24Z-2.7 datasheet, X9258TS24Z-2.7 pinout, X9258TS24Z-2.7 application, or X9258TS24Z-2.7 equivalent, this page delivers verified electrical specs, SOIC-24 package mapping, 2-wire interface timing constraints, wiper resolution (0.6%), and confirmed alternatives for dual-supply programmable resistor replacement.

Technical Context

The X9258TS24Z-2.7 integrates four monolithic CMOS resistor arrays (255 segments each), each with independently addressable 8-bit volatile Wiper Counter Registers (WCR) and four 8-bit nonvolatile Data Registers (DR0–DR3). Wiper position is controlled via 2-wire (I²C-compatible) serial interface using slave address 0101xxxx₂, with A0–A3 pins setting LSBs.

Each potentiometer supports three-terminal potentiometer or two-terminal variable resistor configuration, with VH/RH and VL/RL terminals referenced to V+ and V− respectively, and VW/RW wiper output capable of ±15mA current. Power-up loads DR0 into WCR; WP pin enables hardware write protection for nonvolatile register writes.

Key Specifications

Pinout & Package

Package: 24-lead SOIC (300 mil), RoHS-compliant, Pb-free (e3 termination).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad digital potentiometer applications.

Compared with AD5242BRUZ100 and MCP4651T-104E/ST, the X9258TS24Z-2.7 uniquely delivers quad-channel bipolar operation in a single SOIC-24 package, eliminating level shifters and reducing PCB area by ~40% versus dual-device solutions - critical for compact sensor modules and portable audio gear.

Availability

X9258TS24Z-2.7 is available at Aetrix Electronics and suitable for audio signal conditioning, sensor calibration, programmable filter design, and LED current regulation requiring stable component supply across industrial temperature ranges.

Supply support for X9258TS24Z-2.7 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 (acquired by Renesas Electronics in 2017) designs high-performance analog and mixed-signal ICs for precision power management, signal conditioning, and interface applications.

The X9258 product line targets systems needing programmable analog resistance with nonvolatile storage and dual-supply operation - specifically developed for test equipment, medical instrumentation, and industrial control where recalibration stability and bipolar signal integrity are essential.

FAQ

What is the absolute maximum voltage rating for the V+ and V− pins of the X9258TS24Z-2.7?

The X9258TS24Z-2.7 supports absolute maximum ratings of +10V on V+ and −10V on V−, with a maximum differential (V+ − V−) of 12V. These limits are defined in the Absolute Maximum Ratings table (Page 11 of FN8168 Rev 6.00) and apply regardless of VCC state. Exceeding these values risks permanent damage to the internal resistor arrays and switch matrices.

Does the X9258TS24Z-2.7 support true I²C bus compliance, including clock stretching and arbitration?

The X9258TS24Z-2.7 implements a 2-wire serial interface compatible with I²C protocol conventions (start/stop conditions, ACK/NACK, 7-bit addressing), but does not support clock stretching or multi-master arbitration. It operates strictly as a slave device with fixed slave address format (0101xxxx₂) and requires master-controlled timing per Table 1 and Figures 3–7 in FN8168.

How does power-up behavior differ between the X9258TS24Z-2.7 and standard X9258 variants?

The X9258TS24Z-2.7 behaves identically to other X9258 variants at power-up: all four Wiper Counter Registers load the contents of their respective DR0 registers. The "-2.7" suffix denotes extended VCC range (2.7V–5.5V), not altered power-up logic. This behavior is confirmed in the "Principles Of Operation" section (Page 4) and "Wiper Counter Register" description (Page 8).

Can the WP pin of the X9258TS24Z-2.7 be left floating, or must it be actively driven?

The WP pin of the X9258TS24Z-2.7 must not be left floating. Per Pin Descriptions (Page 3), WP is an active-low hardware write protect input; floating may result in indeterminate nonvolatile write enable/disable states. It should be tied to VCC (disable protection) or driven low by a microcontroller GPIO (enable protection) depending on system requirements.

What is the guaranteed wiper resistance specification for the X9258TS24Z-2.7 at 3.3V digital supply and ±3.3V analog supplies?

The X9258TS24Z-2.7 guarantees wiper resistance of 150Ω to 250Ω (max) when tested at IW = ±1mA with V+ = +3V and V− = −3V, as specified in the Analog Specifications table (Page 11, RW parameter). This value is independent of VCC level and applies directly to 3.3V system designs using symmetric analog rails.