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DS92CK16TMTC Datasheet(PDF) 1 Page - National Semiconductor (TI) |
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DS92CK16TMTC Datasheet(HTML) 1 Page - National Semiconductor (TI) |
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1 / 11 page  DS92CK16 3V BLVDS 1 to 6 Clock Buffer/Bus Transceiver General Description The DS92CK16 1 to 6 Clock Buffer/Bus Transceiver is a one to six CMOS differential clock distribution device utilizing Bus Low Voltage Differential Signaling (BLVDS) technology. This clock distribution device is designed for applications requir- ing ultra low power dissipation, low noise, and high data rates. The BLVDS side is a transceiver with a separate chan- nel acting as a return/source clock. The DS92CK16 accepts BLVDS (300 mV typical) differential input levels, and translates them to 3V CMOS output levels. An output enable pin OE , when high, forces all CLK OUT pins high. The device can be used a source synchronous driver. The selection of the source driving is controlled by the CrdCLK IN and DE pins. This device can be the master clock, driving the inputs of other clock I/O pins in a multipoint environment. Easy master/slave clock selection is achieved along a back- plane. Features n Master/Slave clock selection in a backplane application n 125 MHz operation (typical) n 100 ps duty cycle distortion (typical) n 50 ps channel to channel skew (typical) n 3.3V power supply design n Glitch-free power on at CLKI/O pins n Low Power design (20 mA @ 3.3V static) n Accepts small swing (300 mV typical) differential signal levels n Industrial temperature operating range (-40˚C to +85˚C) n Available in 24-pin TSSOP Packaging Function Diagram and Truth Table Receive Mode Truth Table INPUT OUTPUT OE DE CrdCLK IN (CLKI/O+)–(CLKI/O−) CLK OUT HH X X H L H X VID ≥ 0.07V H L H X VID ≤ −0.07V L L = Low Logic State H = High Logic State X = Irrelevant Z = TRI-STATE Driver Mode Truth Table INPUT OUTPUT OE DE CrdCLK IN CLK/I/O+ CLKI/O− CLK OUT LL L L H L LL H H L H HL L L H H HL H H L H HH X Z Z H TRI-STATE® is a registered trademark of National Semiconductor Corporation. DS101082-1 November 1999 © 1999 National Semiconductor Corporation DS101082 www.national.com |
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