Datasheet 74HC590 - 2

NXP Semiconductors 74HC590 8-bit binary counter with output register; 3-state 4. Functional diagram
12 CE 11 CPC 8-BIT BINARY COUNTER 10 MRC 13 CPR RCO 9 8-BIT STORAGE REGISTER Q0 15 Q1 1 Q2 2 Q3 3 14 OE 3-STATE OUTPUTS Q4 4 Q5 5 Q6 6 Q7 7 001aac542
Fig 1. Functional diagram
14 OE EN3 13 CPR C2 11 13 12 CE G1 CTR8 CPC CPR 11 9 9 CPC 1+ (CT=255)Z4 RCO RCO 10 15 MRC CT=0 Q0 1 Q1 15 1D 2D 3 Q0 2 Q2 1 Q1 12 3 CE Q3 2 Q2 4 Q4 3 Q3 5 Q5 4 Q4 6 Q6 5 Q5 7 Q7 6 Q6 MRC OE 7 2D 3 Q7 10 14 001aac544 001aac545
Fig 2. Logic symbol Fig 3. IEC logic symbol
74HC590_2 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 02 — 28 April 2009 2 of 21
Document Outline 1. General description 2. Features 3. Ordering information 4. Functional diagram 5. Pinning information 5.1 Pinning 5.2 Pin description 6. Functional description 7. Limiting values 8. Recommended operating conditions 9. Static characteristics 10. Dynamic characteristics 11. Waveforms 12. Package outline 13. Abbreviations 14. Revision history 15. Legal information 15.1 Data sheet status 15.2 Definitions 15.3 Disclaimers 15.4 Trademarks 16. Contact information 17. Contents