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CDC339DW 数据表(PDF) 1 Page - Texas Instruments |
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CDC339DW 数据表(HTML) 1 Page - Texas Instruments |
1 / 13 page CDC339 CLOCK DRIVER WITH 3STATE OUTPUTS SCAS331 − DECEMBER 1992 − REVISED MARCH 1994 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D Low Output Skew, Low Pulse Skew for Clock-Distribution and Clock-Generation Applications D TTL-Compatible Inputs and Outputs D Distributes One Clock Input to Eight Outputs − Four Same-Frequency Outputs − Four Half-Frequency Outputs D Distributed VCC and Ground Pins Reduce Switching Noise D High-Drive Outputs (−48-mA IOH, 48-mA IOL) D State-of-the-Art EPIC-ΙΙB BiCMOS Design Significantly Reduces Power Dissipation D Package Options Include Plastic Small-Outline (DW) and Shrink Small-Outline (DB) Packages description The CDC339 is a high-performance, low-skew clock driver. It is specifically designed for applications requiring synchronized output signals at both the primary clock frequency and one-half the primary clock frequency. The four Y outputs switch in phase and at the same frequency as the clock (CLK) input. The four Q outputs switch at one-half the frequency of CLK. When the output-enable (OE) input is low and the clear (CLR) input is high, the Y outputs follow CLK and the Q outputs toggle on low-to-high transitions of CLK. Taking CLR low asynchronously resets the Q outputs to the low level. When OE is high, the outputs are in the high-impedance state. The CDC339 is characterized for operation from − 40 °C to 85°C. FUNCTION TABLE INPUTS OUTPUTS OE CLR CLK Y1−Y4 Q1− Q4 H X X Z Z L LL L L L LH H L L HL L Q0† L H ↑ H Q0† † The level of the Q outputs before the indicated steady-state input conditions were established. Copyright 1994, Texas Instruments Incorporated PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. EPIC- ΙΙB is a trademark of Texas Instruments Incorporated. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 Y3 GND Y4 VCC OE CLR VCC Q4 GND Q3 Y2 GND Y1 VCC CLK GND VCC Q1 GND Q2 DB OR DW PACKAGE (TOP VIEW) |
类似零件编号 - CDC339DW |
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类似说明 - CDC339DW |
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