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IP4251CZ16-8 Datasheet(PDF) 10 Page - NXP Semiconductors |
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IP4251CZ16-8 Datasheet(HTML) 10 Page - NXP Semiconductors |
10 / 16 page IP4251_52_53_54_3 © NXP B.V. 2009. All rights reserved. Product data sheet Rev. 03 — 6 May 2009 10 of 16 NXP Semiconductors IP4251/52/53/54 Integrated 4-, 6- and 8-channel passive filter network To generate SDHC- and MMC-compliant digital signals, the driver strength should not significantly undercut 8 mA. 7.2.2 LCD interfaces, medium-speed interfaces For digital interfaces such as LCD display interfaces running at clock speeds between 10 MHz and 25 MHz or more, IP4251, IP4252, or IP4254 can be used in dependency of the sink load, clock speed, driver strength and rise and fall time requirements. Also the minimum EMI filter requirements may be a decision-making factor. 7.2.3 Keypad, low-speed interfaces Especially for lower-speed interfaces such as keypads, low-speed serial interfaces (e.g. RS232) and low-speed control signals, IP4253 (Rs(ch) = 200 Ω, Cch = 30 pF at Vbias(DC) = 2.5 V) offers a very robust ESD protection and strong suppression of unwanted frequencies (EMI-filtering). Fig 8. Example of IP4252 in an MMC interface 001aaj309 IP4252CZ12-6 IP4252CZ8-4 DAT1 pull-up resistors 50 k Ω - 100 kΩ CMD pull-up 4.7 k Ω - 100 kΩ DAT1 C8 e.g. RSMMC HOST INTERFACE DAT0 C7 DAT7 C13 VSS2 C6 DAT6 C12 CLK C5 VCC(VMMC) VCC(VMMC) C4 VSS1 C3 DAT5 C11 CMD C2 DAT4 C10 DAT3 C1 DAT2 CMD DAT4 DAT3 DAT2 C9 DAT0 DAT7 DAT6 CLK DAT5 |
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