- 制造厂商：TI
- 产品类别：逻辑和电压转换
- 技术类目：触发器、锁存器和寄存器 - D 型锁存器
- 功能描述：具有三态输出的 9 位总线接口 D 类锁存器
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The 'ABT843 9-bit latches are 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 nine transparent D-type latches provide true data at the outputs.
A buffered output-enable (OE\) input can be used to place the nine outputs in either a normal logic state (high or low logic levels) or a high-impedance state. The outputs are also in the high-impedance state during power-up and power-down conditions. The outputs remain in the high-impedance state while the device is powered down. In the high-impedance state, the outputs neither load nor drive the bus lines significantly. The high-impedance state and increased drive provide the capability to drive bus lines without need for interface or pullup components.
OE\ does not affect the internal operations of the latch. Previously stored data can be retained or new data can be entered while the outputs are in the high-impedance state.
To ensure the high-impedance state during power up or power down, OE\ should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
The SN54ABT843 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ABT843 is characterized for operation from -40°C to 85°C.
- State-of-the-Art EPIC-II BTM BiCMOS Design Significantly Reduces Power Dissipation
- Latch-Up Performance Exceeds 500 mA Per JEDEC Standard JESD-17
- Typical VOLP (Output Ground Bounce) < 1 V at VCC = 5 V, TA = 25°C
- High-Drive Outputs (-32-mA IOH, 64-mA IOL)
- Package Options Include Plastic Small-Outline (DW) and Shrink Small-Outline (DB) Packages, Ceramic Chip Carriers (FK), Ceramic Flat (W) Package, and Plastic (NT) and Ceramic (JT) DIPs
EPIC-IIB is a trademark of Texas Instruments Incorporated.
- Number of channels (#)
- 9
- Technology Family
- ABT
- Supply voltage (Min) (V)
- 4.5
- Supply voltage (Max) (V)
- 5.5
- Input type
- TTL-Compatible CMOS
- Output type
- 3-State
- Clock Frequency (Max) (MHz)
- 150
- IOL (Max) (mA)
- 64
- IOH (Max) (mA)
- -32
- ICC (Max) (uA)
- 34000
- Features
- Very high speed (tpd 5-10ns), Partial power down (Ioff), Power up 3-state, Flow-through pinout
SN54ABT843的完整型号有：5962-9571201QLA、SNJ54ABT843JT，以下是这些产品的关键参数及官网采购报价：
5962-9571201QLA，工作温度：-55 to 125，封装：CDIP (JT)-24，包装数量MPQ：1个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：SNPB，TI官网5962-9571201QLA的批量USD价格：33.765（1000+）
SNJ54ABT843JT，工作温度：-55 to 125，封装：CDIP (JT)-24，包装数量MPQ：1个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：SNPB，TI官网SNJ54ABT843JT的批量USD价格：33.765（1000+）
5962-9571201QLA，工作温度：-55 to 125，封装：CDIP (JT)-24，包装数量MPQ：1个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：SNPB，TI官网5962-9571201QLA的批量USD价格：33.765（1000+）
SNJ54ABT843JT，工作温度：-55 to 125，封装：CDIP (JT)-24，包装数量MPQ：1个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：SNPB，TI官网SNJ54ABT843JT的批量USD价格：33.765（1000+）
