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 8535AG-31LF and 8535AG-31LFT are functionally equivalent clock fanout buffers from the same manufacturer, sharing identical electrical characteristics, package type, and operating conditions. The only distinction is the packing method, making the 8535AG-31LF a viable direct replacement for the 8535AG-31LFT in most applications.
Function Type
High match
Package Type
High match
Operating Voltage
High match
Packing Method
Validation required
Parts at a glance
Part B
8535AG-31LF
Renesas Electronics America Inc.
- Lifecycle
- Active
- Stock
- 4970 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 | 8535AG-31LF | Why it matters |
|---|---|---|---|
| Manufacturer | Renesas Electronics America Inc | Renesas Electronics America Inc | Identifies the original source of the device and ensures documentation and support compatibility. |
| Series | 8535 | 8535 | Confirms both parts belong to the same product family, indicating similar architecture and feature set. |
| Function | Clock Generator / Fanout Buffer | Clock Generator / Fanout Buffer | Defines the primary role of the IC in a system, which must match for functional substitutability. |
| Package / Case | 20-TSSOP | 20-TSSOP | Physical footprint and pinout must match for drop-in replacement on an existing PCB. |
| Mounting Type | Surface Mount | Surface Mount | Assembly method must be compatible with the board manufacturing process. |
| Supply Voltage | 3.135 V to 3.465 V | 3.135 V to 3.465 V | Operating voltage range must match the system power rail to ensure reliable operation. |
| Number of Outputs | 4 | 4 | Output count determines how many clock loads can be driven, affecting system design compatibility. |
| Output Type | LVCMOS / LVTTL | LVCMOS / LVTTL | Logic level compatibility with downstream devices is essential for signal integrity. |
| Packaging | Tape & Reel | Tube | Packaging affects handling, automated assembly, and minimum order quantities; the electrical part is otherwise the same. |
| Operating Temperature | -40°C to 85°C | -40°C to 85°C | Temperature range must cover the application environment for guaranteed performance. |
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 | 8535AG-31LFT | 8535AG-31LF |
|---|---|---|
| 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, 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 | 0°C ~ 70°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What is the difference between the 8535AG-31LFT and the 8535AG-31LF?
The 8535AG-31LFT and 8535AG-31LF are the same base device, the IDT (now Renesas) 8535AG-31 clock generator. The trailing "T" on 8535AG-31LFT denotes tape-and-reel packaging, while 8535AG-31LF is the tube or tray packaging option. Electrical and functional specifications are identical between the two orderable part numbers.
Are the 8535AG-31LFT and 8535AG-31LF electrically and functionally interchangeable?
Yes. Because both part numbers refer to the same silicon device and differ only in shipping packaging, they are electrically and functionally interchangeable. The "T" suffix indicates tape-and-reel, which is a packaging designation and does not change device performance, pinout, or specifications.
What function does the 8535AG-31LF device perform?
The 8535AG-31LF is a clock generator from Renesas (formerly IDT) designed to produce low-jitter clock outputs for networking, communications, and computing applications. It generates multiple output clocks from a single reference input and is used in systems requiring synchronized timing signals.
What package does the 8535AG-31LF use?
The 8535AG-31LF is offered in a 20-pin TSSOP (Thin Shrink Small Outline Package). The "LF" suffix in the part number indicates the package and ordering configuration. Designers should confirm the exact package drawing in the Renesas datasheet before finalizing PCB land patterns.
Can the 8535AG-31LFT be used as a drop-in replacement for the 8535AG-31LF?
Yes, provided the assembly process supports tape-and-reel feeding. Since both part numbers describe the same device with identical electrical characteristics and package type, the 8535AG-31LFT can replace the 8535AG-31LF in a design. The only practical difference is the shipping format, which affects pick-and-place equipment setup rather than board-level performance.
Which part number should be selected for high-volume automated assembly?
For high-volume automated assembly, the 8535AG-31LFT is typically preferred because the "T" suffix indicates tape-and-reel packaging, which is compatible with automated pick-and-place feeders. The 8535AG-31LF, supplied in tube or tray format, is more commonly used for prototyping or low-volume manual assembly.
Do the 8535AG-31LFT and 8535AG-31LF share the same datasheet and specifications?
Yes. Both orderable part numbers are covered by the same Renesas (formerly IDT) datasheet for the 8535AG-31 device family. Electrical parameters, timing characteristics, pinout, and operating conditions are identical. Only the packaging and ordering information differ between the two suffixes.