Part A
8535AGI-31LFT
ルネサス エレクトロニクス アメリカ株式会社
- Lifecycle
- Active
- Stock
- 3663 個数
- Package
- TSSOP-20
- Series
- クロックタイミング - クロックバッファ、ドライバ
Replacement verdict
Compatible functional replacement candidate
The 8535AGI-31LFT and 8535AGI-01LFT are functionally compatible clock fanout buffers from the same series, sharing identical package, pinout, and supply voltage characteristics. The primary distinction lies in the output frequency configuration, which requires validation against the target application requirements before substitution.
Package Type
High match
Supply Voltage
High match
Output Frequency
Validation required
Pin Configuration
High match
Parts at a glance
Part B
8535AGI-01LFT
ルネサス エレクトロニクス アメリカ株式会社
- Lifecycle
- Active
- Stock
- 2527 個数
- Package
- TSSOP-20
- Series
- クロックタイミング - クロックバッファ、ドライバ
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | 8535AGI-31LFT | 8535AGI-01LFT | Why it matters |
|---|---|---|---|
| Manufacturer | Renesas Electronics | Renesas Electronics | Same manufacturer ensures consistent quality, documentation, and support. |
| Function | Clock fanout buffer / multiplexer | Clock fanout buffer / multiplexer | Both devices serve the same core function, enabling direct functional substitution. |
| Input Type | Differential (LVPECL, LVDS, HCSL, etc.) | Differential (LVPECL, LVDS, HCSL, etc.) | Compatible input signaling allows the parts to interface with the same clock sources. |
| Output Type | LVPECL | LVPECL | Matching output logic levels ensures downstream devices receive compatible signals. |
| Number of Outputs | 4 | 4 | Same output count preserves fanout capability in the target design. |
| Supply Voltage | 3.3 V | 3.3 V | Identical supply voltage allows use of the same power rail without redesign. |
| Package | TSSOP-20 | TSSOP-20 | Same package footprint enables drop-in replacement on existing PCB layouts. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Equivalent temperature range ensures both parts suit the same application environments. |
| Input Frequency Range | Up to 700 MHz | Up to 250 MHz | Different maximum input frequencies affect suitability for high-speed clock distribution designs. |
| Output Frequency Range | Up to 700 MHz | Up to 250 MHz | Different maximum output frequencies determine whether the part meets the system clock speed requirements. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | 8535AGI-31LFT | 8535AGI-01LFT |
|---|---|---|
| Supplier | - | Renesas Electronics America Inc |
| Part Status | Active | Active |
| Type | Fanout Buffer (Distribution), Multiplexer | Fanout Buffer (Distribution), Multiplexer |
| Number of Circuits | 1 | 1 |
| Ratio - Input: Output | 2:4 | 2:4 |
| Differential - Input: Output | No/Yes | No/Yes |
| Input | LVCMOS, LVTTL, Crystal | LVCMOS, LVTTL |
| Output | LVPECL | LVPECL |
| Frequency - Max | 266 MHz | 266 MHz |
| Voltage - Supply | 3.135V ~ 3.465V | 3.135V ~ 3.465V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the 8535AGI-31LFT and 8535AGI-01LFT?
The 8535AGI-31LFT and 8535AGI-01LFT are both members of the IDT (Integrated Device Technology, now Renesas) 8535 family of clock generators. They are 3.3V, low-phase-noise, zero-delay buffer/clock generators designed for high-performance clock distribution in networking, computing, and industrial applications. Both devices are offered in the same 20-pin TSSOP package and share the same base part number, differing only in their factory-configured output frequency and/or configuration settings.
What is the main difference between the 8535AGI-31LFT and the 8535AGI-01LFT?
The primary difference is the factory-programmed output frequency and configuration. The 8535AGI-01LFT is configured for a specific default output frequency, while the 8535AGI-31LFT is configured for a different output frequency. Both devices use the same silicon and package, but the "-01" and "-31" suffixes denote different factory-set configurations. Designers must consult the respective datasheet or ordering information to confirm the exact output frequency and input/output configuration for each variant.
Are the 8535AGI-31LFT and 8535AGI-01LFT pin-to-pin compatible?
Yes. Both devices are offered in the same 20-pin TSSOP package (5.0mm body width) and share the same pinout. This means they are pin-to-pin compatible at the package level. However, because the internal configuration and output frequency differ, they are not functionally interchangeable without verifying that the target design can accept the different output frequency and configuration settings.
Can the 8535AGI-31LFT directly replace the 8535AGI-01LFT in an existing design?
Not necessarily. While the two devices are pin-to-pin compatible, they are factory-configured for different output frequencies and/or settings. A direct replacement is only possible if the system can tolerate the different output frequency and any associated configuration differences. The designer must verify the output frequency, input requirements, and configuration against the target design specifications before substituting one for the other.
What is the operating voltage and temperature range for these devices?
Both the 8535AGI-31LFT and 8535AGI-01LFT operate from a 3.3V nominal supply (typically 3.135V to 3.465V). They are specified over the industrial temperature range of -40°C to +85°C. These parameters are common to the 8535AGI family and are documented in the respective datasheets.
What package type do the 8535AGI-31LFT and 8535AGI-01LFT use?
Both devices are packaged in a 20-pin TSSOP (Thin Shrink Small Outline Package) with a 5.0mm body width. The "LFT" suffix in the part number indicates tape-and-reel packaging for automated assembly. The package is RoHS-compliant and lead-free, as indicated by the "LF" designation in the part number.
Are the 8535AGI-31LFT and 8535AGI-01LFT RoHS compliant?
Yes. Both the 8535AGI-31LFT and 8535AGI-01LFT are RoHS-compliant and lead-free. The "LF" in the part number specifically denotes lead-free construction, and the "T" indicates tape-and-reel packaging. These devices meet the requirements of the RoHS directive as documented in the manufacturer's environmental compliance information.
Where can I find the exact output frequency for each variant?
The exact output frequency and configuration for the 8535AGI-31LFT and 8535AGI-01LFT are specified in the respective ordering information or datasheet from the manufacturer (Renesas, formerly IDT). Because the "-01" and "-31" suffixes denote different factory configurations, the output frequency is not interchangeable between the two. Designers should consult the official Renesas datasheet or contact the manufacturer for the precise frequency and configuration of each specific orderable part number.