74HC(T)390: Dual decade ripple counter (Based on PIP 74HC_HCT390_CNV)
The 74HC390; 74HCT390 is a dual 4-bit decade ripple counter divided into four separately clocked sections. The counters have two divide-by-2 sections and two divide-by-5 sections. These sections share an asynchronous master reset input (nMR) and can be used in a BCD decade or bi-quinary configuration. If master reset inputs 1MR and 2MR are used to clear all 8 bits of the counter simultaneously, numerous counting configurations are possible within one package. Section clocks nCP0 and nCP1, allow ripple counter or frequency division applications of divide-by-2, 4, 5, 10, 20, 25, 50 or 100.
The HIGH-to-LOW transition of the clock inputs nCP0 and nCP1 trigger each section. For BCD decade operation, the nQ0 output is connected to the nCP1 input of the divide-by-5 section. For bi-quinary decade operation, the nQ3 output is connected to the nCP0 input and nQ0 becomes the decade output. A HIGH on the nMR input overrides the clocks and sets the four outputs LOW. Inputs include clamp diodes. It enables the use of current limiting resistors to interface inputs to voltages in excess of VCC
74HC_T_390: Product Block Diagram
Outline 3d SOT338-1
Data Sheets (1)
Application Notes (2)
Users Guides (1)
| Name/Description | Modified Date |
|---|
| HC/T User Guide (REV 1.0) PDF (508.0 kB) HCT_USER_GUIDE [English] | 01 Nov 1997 |
Selector Guides (2)
Package Information (3)
Packing (1)
Supporting Information (4)
Ordering Information
| Product | Status |
|---|
| 74HC390DB | Active |
| 74HC390PW | Active |
| 74HC390D | Active |
| 74HCT390D | Active |
| 74HCT390DB | Active |
Package Information
| Product ID | Package Description | Outline Version | Reflow/Wave Soldering | Packing | Product Status | Part NumberOrdering code(12NC) | Marking | Chemical Content | RoHS / Pb Free / RHF | LeadFree Conversion Date | EFR | IFR(FIT) | MTBF(hour) | MSL | MSL LF |
|---|
| 74HCT390D |  | SOT109-1 | SO-SOJ-REFLOW
SO-SOJ-WAVE
SO-SOJ-REFLOW
SO-SOJ-WAVE | Reel 13" Q1/T1 CECC | Active | 74HCT390D,653
(9337 152 00653) | 74HCT390D | 74HCT390D |    | week 6, 2004 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
| Bulk Pack, CECC | Active | 74HCT390D,652
(9337 152 00652) | 74HCT390D | 74HCT390D | | week 6, 2004 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
| 74HC390PW |  | SOT403-1 | SSOP-TSSOP-VSO-WAVE | Reel 13" Q1/T1 | Active | 74HC390PW,118
(9351 890 60118) | HC390 | 74HC390PW | | week 10, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
| Bulk Pack | Active | 74HC390PW,112
(9351 890 60112) | HC390 | 74HC390PW | | week 10, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
| 74HCT390DB | | SOT338-1 | SSOP-TSSOP-VSO-REFLOW
SSOP-TSSOP-VSO-WAVE
SSOP-TSSOP-VSO-REFLOW
SSOP-TSSOP-VSO-WAVE | Reel 13" Q1/T1 | Active | 74HCT390DB,118
(9351 899 30118) | HCT390 | 74HCT390DB |  | week 12, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
| Bulk Pack | Active | 74HCT390DB,112
(9351 899 30112) | HCT390 | 74HCT390DB | | week 12, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
| 74HC390D | | SOT109-1 | SO-SOJ-REFLOW
SO-SOJ-WAVE
SO-SOJ-REFLOW
SO-SOJ-WAVE | Reel 13" Q1/T1 CECC | Active | 74HC390D,653
(9337 147 20653) | 74HC390D | 74HC390D | | week 6, 2004 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
| Bulk Pack, CECC | Active | 74HC390D,652
(9337 147 20652) | 74HC390D | 74HC390D | | week 6, 2004 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
| 74HC390DB | | SOT338-1 | SSOP-TSSOP-VSO-REFLOW
SSOP-TSSOP-VSO-WAVE
SSOP-TSSOP-VSO-REFLOW
SSOP-TSSOP-VSO-WAVE | Reel 13" Q1/T1 | Active | 74HC390DB,118
(9351 893 30118) | HC390 | 74HC390DB | | week 12, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
| Bulk Pack | Active | 74HC390DB,112
(9351 893 30112) | HC390 | 74HC390DB | | week 12, 2005 | 84.9 | 6.62 | 1.51E8 | 1 | 1 |
