Part A
8535AG-31LFT
Renesas Electronics America Inc.
- Lifecycle
- Active
- Stock
- 1316 Stückzahl
- Package
- TSSOP-20
- Series
- Clock-Timing, Clock Buffers, Drivers
Replacement verdict
Compatible functional replacement candidate
The 8535AGI-31LFT is a functionally compatible replacement candidate for the 8535AG-31LFT, sharing identical core device specifications including function, package, supply voltage, and output characteristics. The only verified distinction is the operating temperature range, where the 8535AGI-31LFT offers an extended industrial temperature range. Designers should confirm that the target application's thermal environment aligns with the selected variant's rated temperature range before committing to a drop-in substitution.
Function
High match
Package Type
High match
Supply Voltage
High match
Operating Temperature
Validation required
Parts at a glance
Part B
8535AGI-31LFT
Renesas Electronics America Inc.
- Lifecycle
- Active
- Stock
- 3663 Stückzahl
- Package
- TSSOP-20
- Series
- Clock-Timing, Clock Buffers, Drivers
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | 8535AG-31LFT | 8535AGI-31LFT | Why it matters |
|---|---|---|---|
| Manufacturer | Renesas Electronics America Inc | Renesas Electronics America Inc | Identical manufacturer ensures consistent design, documentation, and supply chain support. |
| Function | Clock Fanout Buffer / Multiplexer | Clock Fanout Buffer / Multiplexer | Same core function confirms the parts are functionally interchangeable in clock distribution designs. |
| Number of Outputs | 4 | 4 | Matching output count ensures the same number of clock loads can be driven. |
| Input Type | Differential (LVDS, LVPECL, CML, SSTL, HSTL) | Differential (LVDS, LVPECL, CML, SSTL, HSTL) | Same input compatibility allows the parts to interface with identical upstream signal sources. |
| Output Type | LVPECL | LVPECL | Identical output signaling ensures downstream receivers see the same logic levels. |
| Supply Voltage | 3.3 V | 3.3 V | Same supply voltage means no power rail redesign is needed when substituting. |
| Maximum Operating Frequency | 700 MHz | 700 MHz | Equal frequency rating guarantees the same maximum clock rate can be supported. |
| Operating Temperature Range | 0°C to +70°C | -40°C to +85°C | The industrial-grade temperature range of the I-version allows use in harsher environments where the commercial version may not be reliable. |
| Package / Mounting | 20-TSSOP, Surface Mount | 20-TSSOP, Surface Mount | Same package and footprint enable drop-in replacement without PCB layout changes. |
| Packaging | Tape & Reel | Tape & Reel | Identical packaging supports the same automated assembly and reflow processes. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | 8535AG-31LFT | 8535AGI-31LFT |
|---|---|---|
| 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, Crystal |
| Output | LVPECL | LVPECL |
| Frequency - Max | 266 MHz | 266 MHz |
| Voltage - Supply | 3.135V ~ 3.465V | 3.135V ~ 3.465V |
| Operating Temperature | 0°C ~ 70°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What is the difference between the 8535AG-31LFT and the 8535AGI-31LFT?
The primary difference is the operating temperature range. The 8535AG-31LFT is specified for the commercial temperature range of 0°C to 70°C, while the 8535AGI-31LFT is specified for the industrial temperature range of -40°C to 85°C. Both devices are otherwise functionally identical clock generators in the same package.
Are the 8535AG-31LFT and 8535AGI-31LFT pin-to-pin compatible?
Yes. Both devices are offered in the same 20-pin TSSOP package and share the same pinout. The only difference is the temperature grade, so they are pin-to-pin compatible when the target application's thermal requirements are satisfied.
Can the 8535AGI-31LFT be used as a drop-in replacement for the 8535AG-31LFT?
In most cases yes, provided the application does not require operation below 0°C or above 70°C. The industrial-grade 8535AGI-31LFT covers a wider temperature range and is functionally equivalent, but the designer should verify all electrical specifications against the manufacturer datasheet for the specific operating conditions.
What is the function of the 8535AG-31LFT and 8535AGI-31LFT?
Both devices are clock generators / clock synthesizers designed to produce low-jitter output clocks from a reference input. They are typically used in networking, telecommunications, and industrial timing applications where stable clock generation is required.
What package do the 8535AG-31LFT and 8535AGI-31LFT use?
Both parts are supplied in a 20-pin TSSOP (Thin Shrink Small Outline Package). The "LFT" suffix indicates tape-and-reel packaging for automated assembly.
Do the 8535AG-31LFT and 8535AGI-31LFT have the same output frequency and configuration?
Yes. The "-31" designation indicates the same frequency configuration and output format for both parts. The only differentiating suffix is the temperature grade ("A" for commercial vs "AI" for industrial). Designers should confirm the exact output frequency and configuration from the manufacturer datasheet for their specific application.
Which part should be selected for an industrial application?
The 8535AGI-31LFT should be selected for industrial applications because its -40°C to 85°C operating temperature range meets industrial requirements. The 8535AG-31LFT, rated only for 0°C to 70°C, is not suitable for environments outside the commercial temperature range.