Renesas 830S21AMILFT

Overview

830S21AMILFT from Renesas Electronics is a 1-to-1 differential-to-LVCMOS/LVTTL clock translator with differential CLK/nCLK inputs supporting LVPECL, LVDS, LVHSTL, SSTL, and HCSL signal levels, 350MHz maximum output frequency, 525ps part-to-part skew, and dual-supply operation at 3.3V or 2.5V - used in precision timing fanout for 1PPS distribution in telecom and test equipment.

For engineers reviewing the 830S21AMILFT datasheet, 830S21AMILFT pinout, 830S21AMILFT application, or 830S21AMILFT equivalent, this page delivers verified electrical specs, SOIC-8 package details, real-world interface guidance for differential input adaptation, and validated alternative options for clock translation in high-reliability timing systems.

Technical Context

The 830S21AMILFT implements a single-output, differential-input clock buffer architecture with internal pullup/pulldown resistors (51kΩ) on CLK and nCLK pins, enabling flexible termination for multiple differential standards without external biasing. Its VBB output provides a reference voltage (VDD − 1.3V) for input common-mode level alignment.

It operates across −40°C to +85°C with full 2.5V/3.3V supply compatibility, delivers sub-2ns propagation delay (1.95ns max), and achieves 0.11ps RMS additive phase jitter (12kHz–20MHz integration) - optimized for low-jitter 1PPS signal replication in synchronization-critical infrastructure.

Key Specifications

Pinout & Package

830S21AMILFT uses an 8-lead SOIC (M package) with 3.9 mm × 4.9 mm body and 1.375 mm height. Pin 1 is top-left corner (marking dot adjacent), pin numbering follows standard SOIC counterclockwise layout.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar differential-to-LVCMOS clock translation applications.

Compared with ICS83021AMI-01LF, 830S21AMILFT offers identical timing performance and footprint but benefits from Renesas' extended lifecycle support and updated reliability qualification; versus Si53301-A01AGM, it provides lower power, smaller size, and simpler implementation for pure 1:1 fanout - with no PLL configuration overhead.

Availability

830S21AMILFT is available at Aetrix Electronics and suitable for GNSS timing receivers, telecom base station synchronization, and test & measurement equipment requiring stable component supply, RoHS-compliant packaging, and guaranteed long-term availability for industrial deployments.

Supply support for 830S21AMILFT 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 timing solutions for automotive, industrial, and infrastructure markets.

The 830S21AMILFT belongs to Renesas' HiPerClockS family - engineered for ultra-low-jitter clock distribution in synchronization-critical systems such as 5G infrastructure, precision instrumentation, and satellite navigation equipment.

FAQ

What is the maximum operating frequency supported by the 830S21AMILFT?

The 830S21AMILFT supports a maximum output frequency of 350MHz, verified across both 2.5V and 3.3V supply conditions and over the full −40°C to +85°C ambient temperature range. This rating applies to the Q output when driven by any supported differential input type (LVPECL, LVDS, LVHSTL, SSTL, or HCSL), with load conditions matching JEDEC Standard 65 test methodology.

Does the 830S21AMILFT require external pull-up or pull-down resistors on CLK and nCLK inputs?

No, the 830S21AMILFT integrates internal 51kΩ pullup and pulldown resistors on both CLK and nCLK pins, eliminating the need for external biasing components. These internal resistors enable direct interface with open-emitter LVHSTL, LVPECL, and other differential drivers without additional termination networks - simplifying layout and reducing component count.

Can the 830S21AMILFT accept single-ended input signals?

Yes, the 830S21AMILFT can interface with single-ended signals by using the VBB pin to generate a reference bias voltage (VDD − 1.3V) and routing the signal to CLK while terminating nCLK appropriately. Figure 1 in the official datasheet shows a validated RC bias network (R1 = R2 = 1kΩ, C1 = 0.1µF) placed near the input pins to establish VDD/2 common-mode voltage for reliable single-ended operation.

What is the purpose of the VBB pin on the 830S21AMILFT?

The VBB pin on the 830S21AMILFT outputs a stable reference voltage equal to VDD − 1.3V (typically 2.0V at 3.3V supply or 1.2V at 2.5V supply). This voltage serves as a bias point for external single-ended input configurations and helps maintain proper common-mode alignment when adapting non-differential clock sources to the differential CLK/nCLK inputs.

Is the 830S21AMILFT pin-compatible with earlier IDT versions like the ICS83021?

Yes, the 830S21AMILFT is pin-compatible and functionally identical to the IDT ICS83021AMI-01LF, including identical SOIC-8 pinout, DC/AC specifications, and thermal characteristics. This compatibility stems from Renesas' acquisition of IDT's timing business, with the 830S21AMILFT representing the post-acquisition branded continuation of the same silicon die and package.