Overview
The LMK1C1104DQFT is a high-performance, low-skew, general-purpose clock buffer IC from Texas Instruments. It is part of the LMK1C110x family, which is designed with a modular approach, offering fan-out variations of 1:2, 1:3, and 1:4. This device is particularly suited for applications requiring accurate and reliable clocking functionality across various industries.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Series | LMK1C1104 |
| Number of Outputs | 4 Output |
| Maximum Input Frequency | 250 MHz (at 3.3 V), 200 MHz (at 2.5 V and 1.8 V) |
| Supply Voltage - Max | 3.465 V |
| Supply Voltage - Min | 1.71 V |
| Propagation Delay - Max | 2 ns |
| Minimum Operating Temperature | -40°C |
| Maximum Operating Temperature | +125°C |
| Mounting Style | SMD/SMT |
| Input Type | LVCMOS |
| Output Type | LVCMOS |
| Package | 8-pin WSON (DQF) |
Key Features
- High-performance 1:4 LVCMOS clock buffer with very low output skew (< 50 ps) and extremely low additive jitter (< 50 fs maximum)
- Synchronous output enable control (1G) to switch outputs into a low state when 1G is low
- Fail-safe inputs to prevent oscillation at the outputs in the absence of an input signal and allow for input signals before VDD is supplied
- Supply voltage options: 3.3 V, 2.5 V, or 1.8 V
- 3.3-V tolerant input at all supply voltages
- Low power consumption
- Wide operating temperature range: –40°C to 125°C
Applications
The LMK1C1104DQFT is versatile and can be used in various industries, including:
- Factory automation and control
- Telecommunications equipment
- Data center and enterprise computing
- Grid infrastructure
- Motor drives
- Medical imaging
Q & A
- What is the maximum input frequency of the LMK1C1104DQFT?
The maximum input frequency is 250 MHz at 3.3 V and 200 MHz at 2.5 V and 1.8 V. - What are the supply voltage options for the LMK1C1104DQFT?
The device operates at 3.3 V, 2.5 V, or 1.8 V. - What is the output skew of the LMK1C1104DQFT?
The output skew is less than 50 ps. - Does the LMK1C1104DQFT have fail-safe inputs?
Yes, it has fail-safe inputs that prevent oscillation at the outputs in the absence of an input signal and allow for input signals before VDD is supplied. - What is the operating temperature range of the LMK1C1104DQFT?
The operating temperature range is –40°C to 125°C. - What package types are available for the LMK1C1104DQFT?
The device is available in an 8-pin WSON (DQF) package. - Can the outputs of the LMK1C1104DQFT be disabled?
Yes, the outputs can be disabled by driving the synchronous output enable pin (1G) low. - Is the LMK1C1104DQFT compatible with other devices in the LMK1C110x family?
Yes, all devices in the LMK1C110x family are pin-compatible and backwards compatible to the CDCLVC110x family. - What is the typical additive jitter of the LMK1C1104DQFT?
The typical additive jitter is 7.5 fs at VDD = 3.3 V, 10 fs at VDD = 2.5 V, and 19.2 fs at VDD = 1.8 V. - What is the propagation delay of the LMK1C1104DQFT?
The propagation delay is less than 3 ns.
