Part A
5PB1110NDGI
Renesas Electronics America Inc.
- Lifecycle
- Active
- Stock
- 7570 PCS
- Package
- QFN-20
- Series
- Horário-Horário - Clock Buffers, Drivers
Replacement verdict
Compatible functional replacement candidate
The 5PB1110NDGI and 5PB1108CMGK8 are both 1-to-10 LVCMOS clock fanout buffers from Renesas with matching 1.8V to 3.3V supply range, 10 outputs, and 8-pin packages, making the 5PB1108CMGK8 a viable functional replacement candidate for the 5PB1110NDGI. Designers should validate the output-to-output skew, additive phase jitter, and maximum operating frequency against the specific system timing budget before committing to the substitution.
Output Type
High match
Channel Count
High match
Maximum Frequency
Validation required
Package Type
Validation required
Parts at a glance
Part B
5PB1108CMGK8
Renesas Electronics America Inc.
- Lifecycle
- Active
- Stock
- 2472 PCS
- Package
- UFQFN-16
- Series
- Horário-Horário - 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 | 5PB1110NDGI | 5PB1108CMGK8 | Why it matters |
|---|---|---|---|
| Manufacturer | Renesas Electronics | Renesas Electronics | Same manufacturer ensures consistent quality and support ecosystem. |
| Function | Clock fanout buffer | Clock fanout buffer | Both serve the same core function, enabling direct functional substitution. |
| Number of Outputs | 10 | 8 | Output count determines how many clock loads can be driven; fewer outputs may require additional buffers. |
| Input Type | Differential | Differential | Input compatibility must match the upstream clock source for proper signal integrity. |
| Output Type | LVCMOS | LVCMOS | Output signaling standard must match downstream device requirements. |
| Supply Voltage | 3.3 V | 3.3 V | Supply voltage must be compatible with the system power rail. |
| Package | TSSOP-20 | TSSOP-16 | Different package footprints affect PCB layout and may require board redesign. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | Temperature range must cover the application's environmental conditions. |
| Maximum Output Frequency | 200 MHz | 200 MHz | Frequency capability must meet or exceed the system clock requirements. |
Need help validating a replacement?
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | 5PB1110NDGI | 5PB1108CMGK8 |
|---|---|---|
| Supplier | - | Renesas Electronics America Inc |
| Part Status | Active | Active |
| Type | Fanout Buffer (Distribution) | Fanout Buffer (Distribution) |
| Number of Circuits | 1 | 1 |
| Ratio - Input: Output | 1:10 | 1:8 |
| Differential - Input: Output | No/No | No/No |
| Input | LVCMOS | LVCMOS |
| Output | LVCMOS | LVCMOS |
| Frequency - Max | 200 MHz | 200 MHz |
| Voltage - Supply | 1.71V ~ 3.465V | 1.71V ~ 1.89V, 2.375V ~ 2.625V, 3.135V ~ 3.465V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 105°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the 5PB1110NDGI and 5PB1108CMGK8?
The 5PB1110NDGI and 5PB1108CMGK8 are Renesas (formerly IDT) 5PB series clock fanout buffers. The 5PB1110NDGI is a 1:10 LVCMOS clock buffer in a 20-pin QFN package, while the 5PB1108CMGK8 is a 1:8 LVCMOS clock buffer in an 8-pin DFN package. Both are designed for low-skew clock distribution in applications such as networking, computing, and industrial systems.
What is the difference in fanout between the 5PB1110NDGI and 5PB1108CMGK8?
The 5PB1110NDGI provides 10 outputs (1:10 fanout), whereas the 5PB1108CMGK8 provides 8 outputs (1:8 fanout). This difference affects the number of clock loads each device can drive and the total additive jitter and skew performance in a system.
Are the 5PB1110NDGI and 5PB1108CMGK8 pin-compatible?
No. The 5PB1110NDGI uses a 20-pin QFN package, while the 5PB1108CMGK8 uses an 8-pin DFN package. They have different pin counts, pin assignments, and PCB land patterns, so they are not pin-compatible and cannot be interchanged without a board redesign.
What supply voltage do the 5PB1110NDGI and 5PB1108CMGK8 operate at?
Both devices operate from a 3.3 V or 2.5 V supply, depending on the specific ordering option and configuration. Designers should consult the respective Renesas datasheets for the exact recommended operating conditions and any voltage-specific performance characteristics.
Can the 5PB1110NDGI and 5PB1108CMGK8 be used in the same clock tree?
Yes, they can be used together in a clock tree if the system requires different fanout levels at different stages. For example, the 5PB1110NDGI can distribute a clock to 10 destinations, and one of those outputs can drive the 5PB1108CMGK8 to further distribute to 8 additional loads, provided the input and output voltage levels and jitter budgets are compatible.
What is the typical additive jitter performance of these clock buffers?
Both the 5PB1110NDGI and 5PB1108CMGK8 are designed for low additive phase jitter, typically specified in the datasheets as a low picosecond RMS value over a defined integration range. Exact jitter performance depends on the output frequency, supply voltage, and load conditions, so the specific datasheet curves and tables must be consulted for each part.
Which package types are used for the 5PB1110NDGI and 5PB1108CMGK8?
The 5PB1110NDGI is offered in a 20-pin QFN package, and the 5PB1108CMGK8 is offered in an 8-pin DFN package. These package differences influence thermal performance, PCB footprint, and routing density in the target application.
Are the 5PB1110NDGI and 5PB1108CMGK8 suitable for automotive or industrial temperature ranges?
Temperature grade depends on the specific ordering part number. Some 5PB series devices are available in industrial temperature range versions, while others are commercial. The 5PB1110NDGI and 5PB1108CMGK8 should be selected based on the operating temperature range specified in the Renesas datasheet and the application requirements. Automotive-qualified versions, if available, are identified by distinct part numbers and qualification documentation.