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CD74HC123 Datasheet(PDF) 5 Page - Harris Corporation |
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CD74HC123 Datasheet(HTML) 5 Page - Harris Corporation |
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5 RtWL 2 100 - - 125 - - 150 - 150 ns 4.5 20 - - 25 - - 30 - 30 ns 6 17 - - 21 - - 26 - 26 ns A and B Hold Time tH 2 50 - - 65 - - 75 - 75 ns 4.5 10 - - 13 - - 15 - 15 ns 6 9 - - 11 - - 13 - 13 ns Reset Removal Time tREM 2 50 - - 65 - - 75 - 75 ns 4.5 10 - - 13 - - 15 - 15 ns 6 9 - - 11 - - 13 - 13 ns Retrigger Time Number trT 5- - - - - - - - - ns RX = 10KΩ, CX = 0 - 50 - - 63 - - 76 - ns Output Pulse Width tW 5 Q or Q RX = 10KΩ, CX = 10nF 40 - 50 38.7 - 51.3 38.2 - 51.8 µs HCT TYPES Minimum Input, Pulse Width tWL 5 - A20 - - 25 - - 30 - - ns BtWH 20 - - 25 - - 30 - - ns RtWL 20 - - 25 - - 30 - - ns A and B Hold Time tH 510 - - 13 - - 15 - - ns Reset Removal Time tREM 510 - - 13 - - 15 - ns Retrigger Time Number (Note 4) RX = 10KΩ, CX = 0 trT 5 - 50 - - 63 - - 76 - ns Output Pulse Width Q or Q tW 5 40 - 50 38.7 - 51.3 38.2 - 51.8 µs RX = 10KΩ, CX = 10nF NOTE: 4. Time to trigger depends on the values of RX and CX. The output pulse width can only be extended when the time between the active- going edges of the trigger input pulses meet the minimum retrigger time requirement. Prerequisite for Switching Specifications (Continued) PARAMETER SYMBOL VCC (V) 25oC -40oC TO 85oC -55oC TO 125oC UNITS MIN TYP MAX MIN TYP MAX MIN TYP MAX CD74HC123, CD74HCT123, CD74HC423, CD74HCT423 |
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