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74VCX16501 数据表(PDF) 1 Page - Fairchild Semiconductor |
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74VCX16501 数据表(HTML) 1 Page - Fairchild Semiconductor |
1 / 10 page © 2004 Fairchild Semiconductor Corporation DS500125 www.fairchildsemi.com March 1998 Revised October 2004 74VCX16501 Low Voltage 18-Bit Universal Bus Transceivers with 3.6V Tolerant Inputs and Outputs General Description The VCX16501 is an 18-bit universal bus transceiver which combines D-type latches and D-type flip-flops to allow data flow in transparent, latched, and clocked modes. Data flow in each direction is controlled by output-enable (OEAB and OEBA), latch-enable (LEAB and LEBA), and clock (CLKAB and CLKBA) inputs. For A-to-B data flow, the device operates in the transparent mode when LEAB is HIGH. When LEAB is LOW, the A data is latched if CLKAB is held at a HIGH or LOW logic level. If LEAB is LOW, the A bus data is stored in the latch/flip-flop on the LOW-to-HIGH transition of CLKAB. When OEAB is HIGH, the outputs are active. When OEAB is LOW, the outputs are in a high- impedance state. Data flow for B to A is similar to that of A to B but uses OEBA, LEBA, and CLKBA. The output enables are com- plementary (OEAB is active HIGH and OEBA is active LOW). The VCX16501 is designed for low voltage (1.4V to 3.6V) VCC applications with I/O capability up to 3.6V. The VCX16501 is fabricated with an advanced CMOS technology to achieve high speed operation while maintain- ing low CMOS power dissipation. Features s 1.4V to 3.6V VCC supply operation s 3.6V tolerant inputs and outputs s tPD (A to B, B to A) 2.9 ns max for 3.0V to 3.6V VCC s Power-down high impedance inputs and outputs s Supports live insertion/withdrawal (Note 1) s Static Drive (IOH/IOL) ±24 mA @ 3.0V V CC s Uses patented noise/EMI reduction circuitry s Latchup performance exceeds 300 mA s ESD performance: Human body model > 2000V Machine model >200V Note 1: To ensure the high-impedance state during power up or power down, OEBA should be tied to VCC through a pull-up resistor and OEAB should be tied to GND through a pull-down resistor; the minimum value of the resistors is determined by the current-sourcing capability of the driver. Ordering Code: Devices also available on Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Order Number Package Number Package Description 74VCX16501MTD MTD56 56-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide |
类似零件编号 - 74VCX16501 |
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类似说明 - 74VCX16501 |
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