Renesas EL7457CUZ-T7A

Overview

EL7457CUZ-T7A from Renesas Electronics is a 40MHz non-inverting quad CMOS driver IC with 2A peak output current, 3Ω typical on-resistance, and matched rise/fall times within 1ns-designed for driving high-capacitance CCD storage/vertical clocks in digital camera systems.

For engineers reviewing the EL7457CUZ-T7A datasheet, EL7457CUZ-T7A pinout, EL7457CUZ-T7A application, or EL7457CUZ-T7A equivalent, key selection criteria include dual-supply operation (–5V to +16.5V), TTL/CMOS-compatible inputs, fast 12ns enable/disable timing, and QSOP-16 packaging optimized for space-constrained imaging and ATE pin-driver designs.

Technical Context

The EL7457CUZ-T7A integrates four independent high-side (P-channel) and low-side (N-channel) drivers sharing common VH and VL rails, enabling rail-to-rail output switching between programmable voltage levels. Each channel operates with ground-referenced logic inputs and supports single- or dual-supply configurations.

Its internal architecture delivers tightly matched propagation delays (≤2ns mismatch), 12ns output enable/disable response, and <1mA quiescent current-critical for synchronized multi-channel clock distribution in CCD and ultrasound transducer driver applications where timing skew must be minimized.

Key Specifications

Pinout & Package

EL7457CUZ-T7A is housed in a RoHS-compliant 16-pin QSOP (0.150") package (MDP0040), featuring exposed thermal pad connection to VS− and optimized lead pitch for automated assembly in high-density PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with EL7457CUZ-T7A, the SOIC variant offers easier hand-soldering and legacy compatibility, while the QFN variant delivers superior thermal efficiency and miniaturization-both share identical electrical specs and timing behavior but differ in mechanical integration requirements.

Availability

EL7457CUZ-T7A is available at Aetrix Electronics and suitable for CCD clocking, digital camera vertical drive, and ATE pin-driving applications requiring stable component supply, consistent parametric performance, and long-term industrial availability.

Supply support for EL7457CUZ-T7A 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 is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The EL7457CUZ-T7A belongs to Renesas' high-speed driver product line, engineered specifically for precision timing-critical applications including CCD/CMOS image sensors, medical ultrasound, and automated test equipment.

FAQ

What is the maximum operating frequency supported by the EL7457CUZ-T7A?

The EL7457CUZ-T7A supports clock rates up to 40MHz, verified under standard test conditions with 1000pF load capacitance. This rating applies across the full –40°C to +85°C ambient temperature range and is enabled by its 12ns rise/fall times and matched propagation characteristics. The EL7457CUZ-T7A maintains this performance with both 3V and 5V logic inputs, making it suitable for high-speed CCD clocking and ATE applications where timing fidelity is critical.

How does the EL7457CUZ-T7A handle level shifting between different voltage domains?

The EL7457CUZ-T7A implements level shifting through independent VH and VL supply pins, allowing outputs to swing between user-defined high and low voltage rails-ranging from –5V to +16.5V for VH and –5V to +8V for VL. Inputs remain ground-referenced and compatible with 3V/5V CMOS or TTL logic. This architecture enables the EL7457CUZ-T7A to translate control signals into arbitrary output voltage ranges without external components, supporting applications like ultrasound transducer excitation and mixed-voltage sensor interfaces.

What is the purpose of the OE (output enable) pin on the EL7457CUZ-T7A?

The OE pin on the EL7457CUZ-T7A is an active-low global control that places all four outputs in a high-impedance state within 12ns of assertion. This function is essential in CCD applications during power-down sequences to prevent unintended charge injection or bus contention. The EL7457CUZ-T7A's fast enable/disable timing ensures clean transitions without overshoot or timing skew, preserving signal integrity across all channels simultaneously.

Can the EL7457CUZ-T7A operate from a single supply, and what are the constraints?

Yes, the EL7457CUZ-T7A supports single-supply operation-for example, with VS+ = +15V and VS− = 0V-while maintaining full functionality. In this configuration, VH must be ≤ VS+ and VL ≥ VS−, and the VH–VL differential must remain within 0V to 16.5V. Input logic remains ground-referenced, and the EL7457CUZ-T7A retains its 2A peak drive capability and 3Ω on-resistance. However, thermal performance must be validated per the SOIC/QSOP/QFN θJA values, as power dissipation increases with larger voltage swings.

What package type does the EL7457CUZ-T7A use, and how does it affect thermal performance?

The EL7457CUZ-T7A uses a 16-pin QSOP (0.150") package (MDP0040) with θJA = 112°C/W and θJC = N/A. While less thermally efficient than the QFN variant (θJA = 43°C/W), the QSOP offers robust manufacturability, compatibility with standard reflow profiles, and ease of inspection. Its thermal pad is internally connected to VS−, requiring appropriate PCB copper pour for heat dissipation. For EL7457CUZ-T7A deployments exceeding 1W power dissipation, thermal simulation using the provided θJA value is recommended to ensure TJ remains below 125°C.