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74LVC821ADB Datasheet(PDF) 6 Page - List of Unclassifed Manufacturers |
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74LVC821ADB Datasheet(HTML) 6 Page - List of Unclassifed Manufacturers |
6 / 20 page 9397 750 13276 © Koninklijke Philips Electronics N.V. 2004. All rights reserved. Product data sheet Rev. 03 — 11 May 2004 6 of 20 Philips Semiconductors 74LVC821A 10-bit D-type flip-flop with 5 V tolerant inputs/outputs 7. Functional description [1] H = HIGH voltage level; h = HIGH voltage level one set-up time prior to the LOW-to-HIGH CP transition; L = LOW voltage level; l = LOW voltage level one set-up time prior to the LOW-to-HIGH CP transition; Z = high-impedance OFF-state; l = LOW voltage level one set-up time prior to the LOW-to-HIGH CP transition; NC = no change; X = don’t care. 8. Limiting values GND 12 ground (0 V) CP 13 clock input (LOW-to-HIGH, edge-triggered) Q9 14 3-state flip-flop output Q8 15 3-state flip-flop output Q7 16 3-state flip-flop output Q6 17 3-state flip-flop output Q5 18 3-state flip-flop output Q4 19 3-state flip-flop output Q3 20 3-state flip-flop output Q2 21 3-state flip-flop output Q1 22 3-state flip-flop output Q0 23 3-state flip-flop output VCC 24 supply voltage Table 3: Pin description …continued Symbol Pin Description Table 4: Function table [1] Operating mode Input Internal flip-flops Output OE CP Dn Qn Load and read register L ↑ IL L L ↑ hH H Load register and disable outputs H ↑ IL Z H ↑ hH Z Hold L H or L X NC NC Table 5: Limiting values In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V). Symbol Parameter Conditions Min Max Unit VCC supply voltage −0.5 +6.5 V IIK input diode current VI <0 V - −50 mA VI input voltage [1] −0.5 +6.5 V IOK output diode current VO >VCC or VO <0 V - ±50 mA |
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