74VCX16821MTD
74VCX16821MTD Datasheet
74VCX16821 Low Voltage 20-Bit D-Type Flip-Flops with 3.6V Tolerant Inputs and Outputs
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74VCX16821MTD |
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74VCX16821MTDX |
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| 74VCX16821 Low Voltage 20-Bit D-Type Flip-Flops with 3.6V Tolerant Inputs and Outputs 74VCX16821 Low Voltage 20-Bit D-Type Flip-Flops with 3.6V Tolerant Inputs and Outputs The VCX16821 contains twenty non-inverting D-type flipflops with 3-STATE outputs and is intended for bus oriented applications. The 74VCX16821 is designed for low voltage 1.4V to 3.6V VCC applications with I/O compatibility up to 3.6V. The 74VCX16821 is fabricated with an advanced CMOS technology to achieve high speed operation while maintaining low CMOS power dissipation. s 1.4V to 3.6V VCC supply operation s 3.6V tolerant inputs and outputs s tPD ns max for 3.0V to 3.6V VCC s Power-off high impedance inputs and outputs s Supports live insertion and withdrawal Note 1 s Static Drive IOH/IOL ±24 mA 3.0V VCC s Uses patented noise/EMI reduction circuitry s Latch-up 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, OE should be tied to VCC through a pull-up resistor the minimum value of the resistor is determined by the current-sourcing capability of the driver. Ordering Code: Order Number Package Number Package Descriptions 74VCX16821MTD MTD56 56-Lead Thin Shrink Small Outline Package TSSOP , JEDEC MO-153, 6.1mm Wide Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code. Logic Symbol Pin Descriptions Pin Names OEn CLKn Output Enable Input Active LOW Clock Input Inputs Outputs 2004 Fairchild Semiconductor Corporation DS500130 74VCX16821 Connection Diagram Logic Diagrams Truth Tables Inputs Outputs CLK1 L or H Inputs Outputs CLK2 L or H H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial HIGH or LOW, inputs may not float Z = High Impedance = Previous O0 before LOW-to-HIGH transition of Clock = LOW-to-HIGH transition Functional Description The VCX16821 contains twenty D-type flip-flops with 3-STATE standard outputs. The device is byte controlled with each byte functioning identically, but independent of each other. Control pins can be shorted together to obtain full 20-bit operation. The following description applies to each byte. The twenty flip-flops will store the state of their individual D-type inputs that meet the setup and hold time requirements on the LOW-to-HIGH Clock CLK transition. The 3-STATE standard outputs are controlled by the Output Enable OEn input. When OEn is HIGH, the standard outputs are in the high impedance mode but this does not interfere with entering new data into the flip-flops. Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays. 74VCX16821 Absolute Maximum Ratings Note 2 Supply Voltage VCC DC Input Voltage VI Output Voltage VO Outputs 3-STATE Outputs Active Note 3 DC Input Diode Current IIK VI < 0V DC Output Diode Current IOK VO < 0V VO > VCC DC Output Source/Sink Current IOH/IOL DC VCC or GND Current per Supply Pin ICC or GND Storage Temperature Range TSTG −0.5V to +4.6V −0.5V to +4.6V −0.5V to +4.6V −0.5V to VCC + 0.5V −50 mA −50 mA +50 mA ±50 mA ±100 mA −65°C to +150°C Recommended Operating Conditions Note 4 Power Supply Operating |
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