Renesas ISL54052IHZ-T

Overview

ISL54052IHZ-T from Renesas (formerly Intersil) is a single-pole, single-throw (SPST), normally closed (NC) analog switch optimized for low-voltage, bidirectional signal routing in portable electronics. It operates from a single +1.8V to +5.5V supply, delivers 0.8Ω typical ON-resistance at 5V, achieves 24ns turn-on/10ns turn-off times, and supports 1.8V logic compatibility - enabling direct interface with modern low-power ASICs in space-constrained mobile designs.

For engineers reviewing the ISL54052IHZ-T datasheet, ISL54052IHZ-T pinout, ISL54052IHZ-T application, or ISL54052IHZ-T equivalent, this device is selected for ultra-low r_ON, minimal charge injection (26pC), high off-isolation (80dB @ 100kHz), and operation in 6-lead SOT-23 packages where board area and power efficiency are critical.

Technical Context

The ISL54052IHZ-T implements a CMOS transmission gate architecture with integrated level-shifting circuitry, allowing 1.8V logic inputs to fully control analog switching across the full 0V to V+ signal range. Its internal ESD protection diodes (HBM >6kV) clamp input/output pins to V+ and GND, requiring strict supply-first sequencing but eliminating external protection in many battery-powered systems.

Unlike bipolar-supply switches, it is strictly single-supply only; analog signal swing is bounded by V+ and GND, and logic thresholds scale with supply voltage (e.g., VINH = 1.4V min at 3V). Performance degrades predictably below 1.8V - r_ON rises to 2.54Ω and t_ON extends to 93ns at 1.8V - making supply voltage selection a key design tradeoff between speed, loss, and battery headroom.

Key Specifications

Pinout & Package

ISL54052IHZ-T uses a 6-lead SOT-23 package (JEDEC MO-178AA, Intersil MDP0038), with 0.95mm lead pitch, 2.9mm × 2.8mm body, and 1.3mm max height. Pin 1 is marked by a dot or bevelled edge; leads are tin-plated (e3 finish), RoHS-compliant, and moisture-sensitive (MSL3).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar SPST analog switch applications.

Compared with TMUX1574RSE and ADG849BRM, the ISL54052IHZ-T offers superior low-voltage performance (2.3Ω @ 1.8V), lowest leakage (<300nA), and proven robustness in legacy mobile designs - making it optimal for cost-sensitive, battery-limited applications where NC functionality and SOT-23 compatibility are essential.

Availability

ISL54052IHZ-T is available at Aetrix Electronics and suitable for cellular phone audio routing, portable medical sensor multiplexing, laptop display interface switching, and handheld test equipment signal conditioning requiring stable component supply across extended production lifecycles.

Supply support for ISL54052IHZ-T 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

Renesas Electronics Corporation acquired Intersil in 2017 and maintains its high-performance analog portfolio, emphasizing precision, low-power, and automotive-grade reliability across signal conditioning, power management, and interface solutions.

The ISL54052IHZ-T belongs to Intersil's ultra-low r_ON analog switch family, designed specifically for battery-powered portable electronics where minimizing signal loss, power consumption, and PCB area is critical.

FAQ

What is the maximum supply voltage for the ISL54052IHZ-T?

The ISL54052IHZ-T supports a maximum positive supply voltage (V+) of +5.5V. Operation above this level risks permanent damage due to overvoltage stress on internal ESD diodes and CMOS structures. The datasheet specifies absolute maximum ratings of -0.5V to +6.5V for V+ to GND, but functional operation is guaranteed only within 1.8V to 5.5V. For reliable long-term use, maintain V+ ≤ 5.5V with adequate margin for ripple and transients.

Is the ISL54052IHZ-T pin-compatible with the ISL54051IHZ-T?

No, the ISL54052IHZ-T is not pin-compatible with the ISL54051IHZ-T despite sharing the same SOT-23 package and pin count. The ISL54051IHZ-T is a normally open (NO) switch with pin 3 labeled "NO", while the ISL54052IHZ-T is a normally closed (NC) switch with pin 3 labeled "N.C." (no connect). Swapping them without board revision will result in incorrect switch behavior - e.g., default open instead of closed path - and potential signal routing failure.

What is the typical charge injection value for the ISL54052IHZ-T at 5V supply?

The ISL54052IHZ-T exhibits a typical charge injection (Q) of 26pC at a +4.5V to +5.5V supply, measured with VG = 0V, RG = 0Ω, and CL = 1.0nF. This value is critical for sample-and-hold and precision ADC applications, where injected charge causes voltage glitches on hold capacitors. At lower supplies, charge injection decreases - e.g., 18pC typ @ 1.8V - improving settling accuracy in ultra-low-power systems.

Does the ISL54052IHZ-T support bipolar analog signal operation?

No, the ISL54052IHZ-T does not support bipolar analog signal operation. It is strictly a single-supply device with analog signal range limited to 0V to V+. Applying signals below GND or above V+ forward-biases internal ESD protection diodes, causing excessive leakage and potential latch-up. For bipolar signals, external level-shifting circuitry or a true ±2.5V dual-supply switch (e.g., ADG1419) is required.

What is the thermal resistance (θ_JA) of the ISL54052IHZ-T in its SOT-23 package?

The ISL54052IHZ-T in the 6-lead SOT-23 package (MDP0038) has a typical junction-to-ambient thermal resistance (θ_JA) of 260°C/W, measured on a standard high-thermal-conductivity test board in free air. This value assumes no copper pour or thermal vias; adding a 100mm² copper pad with 4 thermal vias reduces θ_JA by ~30–40°C/W. Maximum junction temperature remains +150°C, limiting continuous power dissipation to ~19mW at 85°C ambient.