Renesas 830154AGI-08LF

Overview

830154AGI-08LF from Renesas Electronics (formerly IDT) is an over-voltage tolerant LVCMOS 1:4 clock fanout buffer optimized for low-skew distribution in telecom, networking, and computing systems. It supports 1.5V–3.3V supplies, delivers ≤250 ps output skew, operates up to 160 MHz, and features a 3.6V-tolerant CLK_IN/OE input with high-impedance output disable - enabling mixed-voltage clock tree design.

For engineers reviewing the 830154AGI-08LF datasheet, 830154AGI-08LF pinout, 830154AGI-08LF application, or 830154AGI-08LF equivalent, key selection criteria include guaranteed output skew (≤250 ps), multi-supply compatibility (1.5V/1.8V/2.5V/3.3V), over-voltage tolerance (3.6V on control/clock inputs), enable timing (≤10 ns enable/disable), and thermal performance in 8-TSSOP (θ_JA = 121.5°C/W).

Technical Context

The 830154AGI-08LF implements a single-ended LVCMOS input stage with internal 51 kΩ pullup (OE) and pulldown (CLK_IN) resistors, driving four matched LVCMOS outputs via low-impedance buffers (9–15 Ω depending on V_DD). Its asynchronous OE control enables deterministic high-impedance state transitions with ≤10 ns enable/disable times.

Skew performance is rigorously characterized: output-to-output skew (t_sk(o)) is ≤250 ps under matched load and supply conditions; part-to-part skew (t_sk(pp)) is ≤800 ps across devices at identical V_DD, temperature, frequency, and loading - critical for synchronous system timing closure.

Key Specifications

Pinout & Package

830154AGI-08LF is packaged in a lead-free, RoHS-compliant 8-TSSOP (G-package) measuring 4.4 mm × 3.0 mm × 0.925 mm, with 0.65 mm pitch and exposed pad not electrically connected.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar clock fanout buffer applications.

Compared with 830154AMI-08LF, the 830154AGI-08LF saves board space and improves thermal response in dense layouts; compared with PI6C557-03LEX, it adds critical over-voltage protection and tighter skew control at the cost of slightly higher unit price - making it the preferred choice for telecom and high-reliability embedded timing.

Availability

830154AGI-08LF is available at Aetrix Electronics and suitable for telecom infrastructure, network switch timing, and server memory subsystems requiring stable component supply, long-term lifecycle support, and guaranteed skew performance.

Supply support for 830154AGI-08LF 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 delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT applications.

The 830154AGI-08LF belongs to Renesas' high-performance clock buffer family, designed specifically for low-skew, multi-supply clock distribution in next-generation communication and computing platforms.

FAQ

What is the maximum clock frequency supported by the 830154AGI-08LF?

The 830154AGI-08LF supports output frequencies up to 160 MHz across all valid supply voltages (1.5V–3.3V). This is verified per AC Electrical Characteristics tables in the datasheet, with propagation delay and skew parameters guaranteed at this frequency. The device maintains ≤250 ps output skew and <0.3 ns propagation delay even at 160 MHz, making it suitable for DDR4/5 memory clocks and 10G/25G SerDes reference timing. Operation beyond 160 MHz is not characterized or guaranteed.

Does the 830154AGI-08LF require external pull-up or pull-down resistors on CLK_IN or OE?

No, the 830154AGI-08LF integrates internal termination: a 51 kΩ pulldown resistor on CLK_IN and a 51 kΩ pullup resistor on OE. These eliminate the need for external biasing components in standard configurations. The datasheet explicitly states these values in Table 2 (Pin Characteristics), and the Function Table confirms OE defaults to logic high (enabled) when left floating - confirming internal pullup functionality. External resistors are only needed if specific timing or noise immunity requirements override the internal values.

Can the 830154AGI-08LF operate with a 1.5V supply while accepting a 3.3V input clock signal?

Yes, the 830154AGI-08LF can operate with V_DD = 1.5V while accepting a 3.3V clock signal on CLK_IN. Its inputs are over-voltage tolerant up to 3.6V regardless of supply voltage - a key feature confirmed in the General Description and Absolute Maximum Ratings. This allows direct interfacing with higher-voltage clock sources in mixed-supply systems without level shifters or clamping diodes, preserving signal integrity and reducing component count.

What is the thermal performance of the 830154AGI-08LF in its 8-TSSOP package?

The 830154AGI-08LF in 8-TSSOP has a junction-to-ambient thermal resistance (θ_JA) of 121.5°C/W under zero airflow on a multilayer PCB. At worst-case conditions (V_DD = 3.465V, all outputs switching at 160 MHz), total power dissipation is ~111 mW, resulting in a calculated junction temperature of 98.5°C at 85°C ambient - well below the 125°C maximum rating. This confirms suitability for industrial-temperature applications without forced cooling.

How does the 830154AGI-08LF handle unused output pins?

Per the Applications Information section of the datasheet, all unused LVCMOS outputs (Q1–Q4) on the 830154AGI-08LF may be left floating with no trace attached. The device does not require termination or grounding of idle outputs, simplifying layout and reducing BOM overhead. This behavior is consistent with standard LVCMOS buffer design and is explicitly validated in the manufacturer's application guidance - no additional circuitry or configuration is needed for unconnected outputs.