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74HCT244DB Datasheet(PDF) 4 Page - NXP Semiconductors |
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74HCT244DB Datasheet(HTML) 4 Page - NXP Semiconductors |
4 / 22 page 74HC_HCT244_3 © Koninklijke Philips Electronics N.V. 2005. All rights reserved. Product data sheet Rev. 03 — 22 December 2005 4 of 22 Philips Semiconductors 74HC244; 74HCT244 Octal buffer/line driver; 3-state 6. Pinning information 6.1 Pinning 6.2 Pin description (1) The die substrate is attached to this pad using conductive die attach material. It can not be used as supply pin or input Fig 4. Pin configuration DIP20, SO20, SSOP20 and TSSOP20 Fig 5. Pin configuration DHVQFN20 74HC244 74HCT244 1OE VCC 1A0 2OE 2Y0 1Y0 1A1 2A0 2Y1 1Y1 1A2 2A1 2Y2 1Y2 1A3 2A2 2Y3 1Y3 GND 2A3 001aae011 1 2 3 4 5 6 7 8 9 10 12 11 14 13 16 15 18 17 20 19 001aae012 74HC244 74HCT244 Transparent top view 1Y3 1A3 2Y3 2A2 2Y2 1Y2 1A2 2A1 2Y1 1Y1 1A1 2A0 2Y0 1Y0 1A0 2OE 9 12 8 13 7 14 6 15 5 16 4 17 3 18 2 19 terminal 1 index area GND(1) Table 3: Pin description Symbol Pin Description 1OE 1 1 output enable input (active LOW) 1A0 2 1 data input 0 2Y0 3 2 bus output 0 1A1 4 1 data input 1 2Y1 5 2 bus output 1 1A2 6 1 data input 2 2Y2 7 2 bus output 2 1A3 8 1 data input 3 2Y3 9 2 bus output 3 GND 10 ground (0 V) 2A3 11 2 data input 3 1Y3 12 1 bus output 3 2A2 13 2 data input 2 1Y2 14 1 bus output 2 |
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