Renesas 830S21AMILF

Overview

830S21AMILF 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 max output frequency, 525ps part-to-part skew, and dual 2.5V/3.3V supply operation - used in precision timing fanout for 1PPS distribution in telecom synchronization systems.

For engineers reviewing the 830S21AMILF datasheet, 830S21AMILF pinout, 830S21AMILF application, or 830S21AMILF equivalent, key selection criteria include input compatibility across five differential standards, additive phase jitter (0.11ps RMS), SOIC-8 footprint constraints, VBB reference voltage generation, and DC/AC specs validated at -40°C to +85°C.

Technical Context

The 830S21AMILF implements a single-output clock buffer with internal pullup/pulldown resistors (51kΩ) on CLK/nCLK inputs, enabling flexible termination for multiple differential standards without external biasing. Its VBB output provides a stable reference voltage (VDD − 1.3V) for input common-mode level setting.

It operates from either 2.5V ±5% or 3.3V ±5% supply, delivering LVCMOS/LVTTL-compatible Q output with 47–53% duty cycle up to 266MHz and propagation delay of 0.95–2.0ns depending on supply and load conditions.

Key Specifications

Pinout & Package

830S21AMILF uses an 8-lead SOIC package (M package, 3.9 × 4.9 × 1.375 mm body), RoHS-compliant and lead-free.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ICS83021AMI and 830S21AMILFT, the 830S21AMILF offers identical timing performance and pin compatibility in tube packaging - making it optimal for prototyping, low-volume builds, and manual assembly where reel handling is impractical.

Availability

830S21AMILF is available at Aetrix Electronics and suitable for telecom synchronization, GNSS timing distribution, and industrial PTP applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for 830S21AMILF 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 830S21AMILF belongs to Renesas' HiPerClockS family of high-performance clock translators, designed specifically for low-jitter, multi-standard differential clock fanout in telecom and precision timing systems.

FAQ

What is the maximum operating frequency supported by the 830S21AMILF?

The 830S21AMILF supports a maximum output frequency of 350MHz, verified under both 2.5V and 3.3V supply conditions across the full -40°C to +85°C temperature range. This rating applies to the Q output driving LVCMOS/LVTTL loads with specified rise/fall times and duty cycle limits. The device maintains 47–53% output duty cycle up to 266MHz, with guaranteed timing parameters documented in Tables 4A and 4B of the official datasheet.

Does the 830S21AMILF require external pull-up or pull-down resistors on its CLK and nCLK inputs?

No, the 830S21AMILF integrates internal 51kΩ pullup and pulldown resistors on both CLK and nCLK inputs, eliminating the need for external biasing components. This feature is explicitly confirmed in Table 2 (Pin Characteristics) of the datasheet and enables direct connection to LVPECL, LVDS, and other differential sources without additional termination networks - reducing PCB area and BOM cost.

What is the purpose of the VBB pin on the 830S21AMILF?

The VBB pin on the 830S21AMILF outputs a reference voltage equal to VDD − 1.3V (typical), used to set the common-mode level for the differential CLK/nCLK inputs. This internally generated bias point ensures proper input stage operation across all supported differential standards (LVPECL, LVDS, etc.) and removes dependency on external resistor dividers - simplifying layout and improving repeatability in high-density timing designs.

Can the 830S21AMILF operate from both 2.5V and 3.3V supplies?

Yes, the 830S21AMILF is fully specified to operate from either 2.5V ±5% (2.375V–2.625V) or 3.3V ±5% (3.135V–3.465V) supply voltages, with corresponding DC and AC characteristics validated across the full -40°C to +85°C ambient range. Power supply current is 11mA at 2.5V and 12mA at 3.3V, and output drive strength (ROUT) scales accordingly to 12Ω and 10Ω respectively.

Is the 830S21AMILF suitable for 1PPS signal distribution applications?

Yes, the 830S21AMILF is explicitly designed for the fanout of 1PPS signals, as stated in the "Features" section of its official datasheet. Its low additive phase jitter (0.11ps RMS), tight part-to-part skew (525ps max), and robust differential input compatibility make it ideal for distributing precise 1PPS timing pulses in telecom synchronization, GNSS receivers, and IEEE 1588 PTP systems where nanosecond-level alignment is critical.