The ’AHCT574 devices are octal edge-triggered D-type flip-flops that feature 3-state outputs designed specifically for driving highly capacitive or relatively low-impedance loads. These devices are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.
On the positive transition of the clock (CLK) input, the Q outputs are set to the logic levels of the data (D) inputs.
A buffered output-enable (OE)\ input places the eight outputs in either a normal logic state (high or low) or the high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines significantly. The high-impedance state and the increased drive provide the capability to drive bus lines without interface or pullup components
| SN74AHCT574 | |
| Voltage Nodes(V) | 5 |
| Rating | Catalog |
| 器件 | 状态 | 温度 | 价格（美元） | 封装 | 引脚 | 封装数量 | 封装载体 | 丝印标记 |
| SN74AHCT574DBLE | OBSOLETE | -40 to 85 | SSOP (DB) | 20 | |||
| SN74AHCT574DBR | ACTIVE | -40 to 85 | 0.44 | 1ku | SSOP (DB) | 20 | 2000 | LARGE T&R | |
| SN74AHCT574DBRE4 | ACTIVE | -40 to 85 | 0.44 | 1ku | SSOP (DB) | 20 | 2000 | LARGE T&R | |
| SN74AHCT574DBRG4 | ACTIVE | -40 to 85 | 0.44 | 1ku | SSOP (DB) | 20 | 2000 | LARGE T&R | |
| SN74AHCT574DW | ACTIVE | -40 to 85 | 0.48 | 1ku | SOIC (DW) | 20 | 25 | TUBE | |
| SN74AHCT574DWE4 | ACTIVE | -40 to 85 | 0.48 | 1ku | SOIC (DW) | 20 | 25 | TUBE | |
| SN74AHCT574DWG4 | ACTIVE | -40 to 85 | 0.48 | 1ku | SOIC (DW) | 20 | 25 | TUBE | |
| SN74AHCT574DWR | ACTIVE | -40 to 85 | 0.40 | 1ku | SOIC (DW) | 20 | 2000 | LARGE T&R | |
| SN74AHCT574DWRE4 | ACTIVE | -40 to 85 | 0.40 | 1ku | SOIC (DW) | 20 | 2000 | LARGE T&R | |
| SN74AHCT574DWRG4 | ACTIVE | -40 to 85 | 0.40 | 1ku | SOIC (DW) | 20 | 2000 | LARGE T&R | |
| SN74AHCT574N | ACTIVE | -40 to 85 | 0.44 | 1ku | PDIP (N) | 20 | 20 | TUBE | |
| SN74AHCT574NE4 | ACTIVE | -40 to 85 | 0.44 | 1ku | PDIP (N) | 20 | 20 | TUBE | |
| SN74AHCT574NSR | ACTIVE | -40 to 85 | 0.44 | 1ku | SO (NS) | 20 | 2000 | LARGE T&R | |
| SN74AHCT574NSRE4 | ACTIVE | -40 to 85 | 0.44 | 1ku | SO (NS) | 20 | 2000 | LARGE T&R | |
| SN74AHCT574NSRG4 | ACTIVE | -40 to 85 | 0.44 | 1ku | SO (NS) | 20 | 2000 | LARGE T&R | |
| SN74AHCT574PW | ACTIVE | -40 to 85 | 0.48 | 1ku | TSSOP (PW) | 20 | 70 | TUBE | |
| SN74AHCT574PWE4 | ACTIVE | -40 to 85 | 0.48 | 1ku | TSSOP (PW) | 20 | 70 | TUBE | |
| SN74AHCT574PWG4 | ACTIVE | -40 to 85 | 0.48 | 1ku | TSSOP (PW) | 20 | 70 | TUBE | |
| SN74AHCT574PWLE | OBSOLETE | -40 to 85 | TSSOP (PW) | 20 | |||
| SN74AHCT574PWR | ACTIVE | -40 to 85 | 0.40 | 1ku | TSSOP (PW) | 20 | 2000 | LARGE T&R | |
| SN74AHCT574PWRE4 | ACTIVE | -40 to 85 | 0.40 | 1ku | TSSOP (PW) | 20 | 2000 | LARGE T&R | |
| SN74AHCT574PWRG4 | ACTIVE | -40 to 85 | 0.40 | 1ku | TSSOP (PW) | 20 | 2000 | LARGE T&R |
| 器件 | 环保计划* | 铅/焊球涂层 | MSL 等级/回流焊峰 | 环保信息与无铅 (Pb-free) | DPPM / MTBF / FIT 率 |
| SN74AHCT574DBR | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74AHCT574DBR | SN74AHCT574DBR |
| SN74AHCT574DBRE4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74AHCT574DBRE4 | SN74AHCT574DBRE4 |
| SN74AHCT574DBRG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74AHCT574DBRG4 | SN74AHCT574DBRG4 |
| SN74AHCT574DW | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74AHCT574DW | SN74AHCT574DW |
| SN74AHCT574DWE4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74AHCT574DWE4 | SN74AHCT574DWE4 |
| SN74AHCT574DWG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74AHCT574DWG4 | SN74AHCT574DWG4 |
| SN74AHCT574DWR | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74AHCT574DWR | SN74AHCT574DWR |
| SN74AHCT574DWRE4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74AHCT574DWRE4 | SN74AHCT574DWRE4 |
| SN74AHCT574DWRG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74AHCT574DWRG4 | SN74AHCT574DWRG4 |
| SN74AHCT574N | Pb-Free (RoHS) | CU NIPDAU | N/A for Pkg Type | SN74AHCT574N | SN74AHCT574N |
| SN74AHCT574NE4 | Pb-Free (RoHS) | CU NIPDAU | N/A for Pkg Type | SN74AHCT574NE4 | SN74AHCT574NE4 |
| SN74AHCT574NSR | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74AHCT574NSR | SN74AHCT574NSR |
| SN74AHCT574NSRE4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74AHCT574NSRE4 | SN74AHCT574NSRE4 |
| SN74AHCT574NSRG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74AHCT574NSRG4 | SN74AHCT574NSRG4 |
| SN74AHCT574PW | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74AHCT574PW | SN74AHCT574PW |
| SN74AHCT574PWE4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74AHCT574PWE4 | SN74AHCT574PWE4 |
| SN74AHCT574PWG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74AHCT574PWG4 | SN74AHCT574PWG4 |
| SN74AHCT574PWR | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74AHCT574PWR | SN74AHCT574PWR |
| SN74AHCT574PWRE4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74AHCT574PWRE4 | SN74AHCT574PWRE4 |
| SN74AHCT574PWRG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | SN74AHCT574PWRG4 | SN74AHCT574PWRG4 |
