These 8-bit flip-flops feature 3-state outputs designed specifically for   driving highly capacitive or relatively low-impedance loads. They are   particularly suitable for implementing buffer registers, I/O ports,   bidirectional bus drivers, and working registers.
The eight flip-flops of the SN54ABT574 and SN74ABT574A are edge-triggered D-type flip-flops. On the positive transition of the clock (CLK) input, the Q outputs are set to the logic levels set up at the data (D) inputs.
A buffered output-enable (OE)\ input can be used to place the eight outputs in either a normal logic state (high or low logic levels) or the high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines significantly
| SN54ABT574 | |
| Voltage Nodes(V) | 5 | 
| Technology Family | ABT | 
| Rating | Military | 
| 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 | 
| SNJ54ABT574FK | ACTIVE | -55 to 125 | 9.75 | 1ku | LCCC (FK) | 20 | 1 | TUBE | |
| SNJ54ABT574J | ACTIVE | -55 to 125 | 5.95 | 1ku | CDIP (J) | 20 | 1 | TUBE | |
| SNJ54ABT574W | ACTIVE | -55 to 125 | 10.35 | 1ku | CFP (W) | 20 | 1 | TUBE | 
| 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 | 
| SNJ54ABT574FK | TBD | POST-PLATE | N/A for Pkg Type | SNJ54ABT574FK | SNJ54ABT574FK | 
| SNJ54ABT574J | TBD | A42 | N/A for Pkg Type | SNJ54ABT574J | SNJ54ABT574J | 
| SNJ54ABT574W | TBD | Call TI | N/A for Pkg Type | SNJ54ABT574W | SNJ54ABT574W |