Renesas ISL55111IVZ-T

Overview

ISL55111IVZ-T from Renesas Electronics is a dual high-speed anti-phase MOSFET driver optimized for precise pulse generation and buffering in time-critical imaging and sensing systems. It delivers 3.5A peak output current, 1.5ns rise/fall times (100pF), <0.5ns channel-to-channel skew, and operates with 5V–13.2V driver rail (VH) and 2.7V–5.5V logic supply (VDD). It is used in CCD array horizontal drivers where low skew and fast edge fidelity preserve pixel timing integrity.

For engineers reviewing the ISL55111IVZ-T datasheet, ISL55111IVZ-T pinout, ISL55111IVZ-T application, or ISL55111IVZ-T equivalent, key selection criteria include anti-phase output configuration, 8-pin TSSOP package thermal performance (θ_JA = 140°C/W), power-down mode (12µA I_DD-PDN), and compatibility with 3.3V/5V logic families without level-shifting circuitry.

Technical Context

The ISL55111IVZ-T implements two independent CMOS output stages with tightly controlled input thresholds (V_{IX_LH} = 1.42V typ, V_{IX_HL} = 1.22V typ) to minimize input rise-time sensitivity on output pulse width. Its anti-phase architecture ensures complementary drive signals for push-pull or differential load configurations without external inversion logic.

Each channel features low-impedance sourcing/sinking (r_DS = 3–6Ω), rail-to-rail swing (within 30mV of VH/GND), and supports loads up to 680pF while maintaining sub-15ns propagation delay (t_pdR = 14.5ns max at 680pF). Power-down (PD) and - in QFN variants only - ENABLE control provide flexible system-level power management.

Key Specifications

Pinout & Package

The ISL55111IVZ-T is housed in an 8-lead TSSOP package (M8.173) with exposed pad not present; thermal dissipation relies on PCB copper area under leads. GND (Pin 8) serves as common return for both VH and VDD supplies.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual high-speed MOSFET driver applications.

Compared with ISL55111IVZ-T, the ISL55111IRZ-T offers superior thermal management and dynamic enable control but requires PCB redesign, while the LM5112MMX/NOPB provides higher per-channel current at the cost of added complexity for anti-phase operation - making ISL55111IVZ-T optimal for space-constrained, timing-critical dual-output applications where thermal load is moderate.

Availability

ISL55111IVZ-T is available at Aetrix Electronics and suitable for ultrasound imaging systems, scientific CCD cameras, industrial piezoelectric sensors, and high-speed memory clock distribution requiring stable component supply across extended production lifecycles.

Supply support for ISL55111IVZ-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 is a global semiconductor leader specializing in microcontrollers, analog, power, and connectivity solutions for industrial, automotive, and infrastructure markets.

The ISL55111IVZ-T belongs to Renesas' high-speed interface and driver product line, engineered specifically for precision timing-critical applications such as medical ultrasound, scientific imaging, and industrial sensing where nanosecond-level skew and edge fidelity are non-negotiable.

FAQ

What is the anti-phase functionality of the ISL55111IVZ-T and how does it differ from the ISL55110?

The ISL55111IVZ-T features an inverted IN-B input, causing OB to toggle opposite to IN-A - producing true complementary outputs without external logic. In contrast, the ISL55110 has non-inverted IN-B, yielding in-phase outputs. This distinction makes ISL55111IVZ-T ideal for push-pull gate drive and differential clocking, while ISL55110 suits parallel signal buffering. Both share identical pinout, timing, and drive specs in the 8-lead TSSOP package.

Does the ISL55111IVZ-T support 3.3V logic inputs when powered by a 5V VDD supply?

Yes, the ISL55111IVZ-T supports 3.3V logic inputs with VDD = 5V. Its input thresholds (V_{IX_LH} = 1.42V typ, V_{IX_HL} = 1.22V typ) and hysteresis (0.2V) ensure reliable switching across the full 2.7V–5.5V VDD range. Input voltage tolerance extends from (GND − 0.5V) to (VDD + 0.5V), allowing direct interface with 3.3V FPGA I/O banks even when VDD is set to 5V for noise margin.

What is the maximum capacitive load the ISL55111IVZ-T can drive while maintaining specified rise/fall times?

The ISL55111IVZ-T maintains 1.2ns/1.4ns rise/fall times up to 100pF. At 330pF, rise time degrades to <3.0ns over temperature; at 680pF, it reaches 6.9ns (fall) and 6.2ns (rise). The device remains functional beyond 680pF but with progressively slower edges - design validation is required for loads >680pF. For ISL55111IVZ-T, always use local VH bypassing (0.1µF + 4.7µF) to sustain peak current delivery into heavy capacitive loads.

How does the power-down (PD) feature affect output states and timing in the ISL55111IVZ-T?

When PD is driven high, both OA and OB enter high-impedance (tri-state) mode regardless of IN-A/IN-B states, and quiescent current drops to 12µA (I_DD-PDN). Propagation delay and skew specifications do not apply in power-down mode. Recovery time from PD high to active operation is 650ns (PDEN), after which full timing specs resume. This enables low-power standby in portable ultrasound probes without disrupting system-level timing coordination.

Can the ISL55111IVZ-T operate with VH = 13.2V and VDD = 2.7V simultaneously?

Yes, the ISL55111IVZ-T is fully specified for simultaneous operation at VH = 13.2V (max) and VDD = 2.7V (min). DC electrical specs confirm r_DS = 3–6Ω and t_R/t_F = 1.2/1.4ns hold across this combined range. However, thermal design must account for increased power dissipation at high VH; the 8-lead TSSOP's θ_JA = 140°C/W necessitates adequate PCB copper area to maintain junction temperature ≤+150°C under sustained 3.5A peak loads.