Part A
8535AG-31LFT
компанией Renesas Electronics America Inc
- Lifecycle
- Active
- Stock
- 1316 ПКС
- Package
- TSSOP-20
- Series
- Часовое время - Часовые буферы, драйверы
Replacement verdict
Compatible functional replacement candidate
The 8535AGI-31LF is a functionally compatible replacement candidate for the 8535AG-31LFT, with identical core specifications across all four evaluated viewpoints. The only distinction is the industrial temperature range rating of the 8535AGI-31LF, which exceeds the standard temperature range of the 8535AG-31LFT. Both devices share the same package, pinout, output type, and supply voltage characteristics, making the 8535AGI-31LF a viable drop-in alternative where extended temperature operation is required or acceptable.
Output Type
High match
Package Type
High match
Supply Voltage
High match
Operating Temperature
High match
Parts at a glance
Part B
8535AGI-31LF
корпорации Renesas Electronics
- Lifecycle
- Active
- Stock
- 3551 ПКС
- Series
- Часовое время - Часовые буферы, драйверы
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-31LF | Why it matters |
|---|---|---|---|
| Manufacturer | Renesas Electronics America Inc | Renesas Electronics America Inc | Identical manufacturer ensures the same design, process, and quality standards, supporting direct substitutability. |
| Function / Type | Clock Generator, Fanout Distribution | Clock Generator, Fanout Distribution | Same functional category means both devices serve the same role in a clock tree, enabling functional replacement. |
| Package / Case | 20-TSSOP | 20-TSSOP | Identical package footprint allows drop-in replacement without PCB layout changes. |
| Number of Circuits | 1 | 1 | Same circuit count ensures equivalent channel capacity for the target application. |
| Input Type | LVCMOS, LVTTL, Crystal | LVCMOS, LVTTL, Crystal | Matching input compatibility allows the same reference source to drive either device. |
| Output Type | LVCMOS, LVTTL | LVCMOS, LVTTL | Same output signaling ensures downstream devices receive compatible logic levels. |
| Supply Voltage | 3.135V ~ 3.465V | 3.135V ~ 3.465V | Identical supply range means the same power rail can be used without redesign. |
| Operating Temperature | 0°C ~ 70°C | -40°C ~ 85°C | The industrial-grade temperature range of the AGI version supports harsher environments, while the AG version is limited to commercial conditions. |
| Mounting Type | Surface Mount | Surface Mount | Same mounting method ensures compatibility with the existing assembly process. |
| PLL | Yes | Yes | Both include a PLL, so frequency synthesis and jitter cleanup capabilities are equivalent. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | 8535AG-31LFT | 8535AGI-31LF |
|---|---|---|
| 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 |
| Base Product Number | - | 8535A |
Frequently asked questions
What are the 8535AG-31LFT and 8535AGI-31LF?
Both are 8535AG-series clock generators from Renesas (formerly IDT). The 8535AG-31LFT is the commercial temperature range version, while the 8535AGI-31LF is the industrial temperature range version. Both are offered in a 20-pin TSSOP package and are lead-free (LF suffix).
What is the difference between the 8535AG-31LFT and 8535AGI-31LF?
The primary difference is the operating temperature range. The 8535AG-31LFT is specified for the commercial temperature range (0°C to +70°C), while the 8535AGI-31LF is specified for the industrial temperature range (−40°C to +85°C). The "I" in the part number denotes the industrial temperature version. Functionally and pinout-wise, the two devices are identical.
Are the 8535AG-31LFT and 8535AGI-31LF pin-to-pin compatible?
Yes. Both devices are offered in the same 20-pin TSSOP package with identical pin assignments. They are pin-to-pin compatible, and the only difference is the temperature grade.
Can the 8535AG-31LFT and 8535AGI-31LF be used interchangeably?
In applications where the ambient temperature remains within 0°C to +70°C, the 8535AG-31LFT and 8535AGI-31LF are functionally interchangeable. However, for designs requiring operation below 0°C or above +70°C, only the 8535AGI-31LF (industrial grade) is specified. Always verify the target design's thermal requirements against the manufacturer datasheet before substituting.
What is the function of the 8535AG-31LFT and 8535AGI-31LF?
Both devices are clock generators designed to produce low-jitter clock outputs from a crystal or reference input. They are typically used in networking, telecommunications, and industrial applications requiring stable clock synthesis. For exact output frequency, jitter, and configuration details, refer to the Renesas 8535AG datasheet.
What package do the 8535AG-31LFT and 8535AGI-31LF use?
Both devices are packaged in a 20-pin TSSOP (Thin Shrink Small Outline Package). The "LF" suffix indicates lead-free (RoHS-compliant) construction. The "T" suffix on the 8535AG-31LFT indicates tape-and-reel packaging.
What is the difference between the "T" suffix on 8535AG-31LFT and the packaging of 8535AGI-31LF?
The "T" suffix on the 8535AG-31LFT denotes tape-and-reel packaging for automated assembly. The 8535AGI-31LF part number as listed does not include a "T" suffix, which typically indicates tube or tray packaging. Packaging differences do not affect device electrical performance or pinout.
Are the 8535AG-31LFT and 8535AGI-31LF RoHS compliant?
Yes. Both part numbers carry the "LF" suffix, which indicates lead-free, RoHS-compliant construction. Confirm current compliance status on the manufacturer's or authorized distributor's product page, as compliance declarations may be updated.