Overview
Description
The 542 is cost effective way to produce a high-quality clock output divided from a clock input. The chip accepts a clock input up to 156 MHz at 3.3 V and produces a divide by 2, 4, 6, 8, 12, or 16 of the input clock. There are two outputs on the chip, one being a low-skew divide by two of the other. For instance, if an 100 MHz input clock is used, the 542 can produce low-skew 50 MHz and 25 MHz clocks, or low skew 25 MHz and 12.5 MHz clocks. The chip has an all-chip power-down mode that stops the outputs low, and an OE pin that tri-states the outputs. See the 501, 502, 511, 512, and 525 for clock multipliers.
Features
- 8-pin SOIC package, Pb free
- Available in RoHS compliant package
- IDT's lowest cost clock divider
- Low skew (500 ps) outputs. One is /2 of the other
- Easy to use with other generators and buffers
- Input clock frequency up to 156 MHz
- Output clock duty cycle of 45/55
- Power-down turns off chip
- Output Enable
- Advanced, low-power CMOS process
- Operating voltage of 3.3 V or 5 V
- Does not degrade phase noise - no PLL
- Available in industrial and commercial temperature ranges
Comparison
Applications
Design & Development
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Recommendation or direct replacement for the 542MLFT
We have an old design that used the 542MLFT and I see that this device is obsolete.What do you recommend we use to replace this on new designs? [locked by: Sai (SWF) at 13:33 (GMT 0) on 16 Jun 2022]
May 11, 2022 -
RX261 - USB HID or CDC Peripherie (Sample for Windows)
Hello, we generate the USB HID Peripherie Code with the Smart Configurator. Now we need a communication with a windows PC, to send and receive some datas. Now we write a short Python Script to send USB Data to the RSKRX261 EVAL Board. We get all Information about the USB ...
May 12, 2025 -
GPIO_GP4_15 Input Not Detected Despite Correct Register Settings
Hello, We are facing an issue where GPIO input cannot be read correctly. We have configured the registers according to the documentation R19UH0161EJ0120, page 7-104. We are using GPIO_GP4_15 (CN40, pin 1). Our register settings are as follows: POSNEG4 = 0x00000000 IOINTSEL4 = 0x00000000 INOUTSEL4 = 0x00000000 However, no matter ...
May 19, 2025