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触发器、锁存器和寄存器
D 型锁存器

SN74ABT841A

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具有三态输出的 10 位总线接口 D 类锁存器

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SN74ABT841A

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产品详情

Number of channels 10 Technology family ABT Input type TTL-Compatible CMOS Output type 3-State Clock frequency (max) (MHz) 150 IOL (max) (mA) 64 IOH (max) (mA) -32 Supply current (max) (µA) 38000 Features Flow-through pinout, Partial power down (Ioff), Power up 3-state, Very high speed (tpd 5-10ns) Operating temperature range (°C) -40 to 85 Rating Catalog
Number of channels 10 Technology family ABT Input type TTL-Compatible CMOS Output type 3-State Clock frequency (max) (MHz) 150 IOL (max) (mA) 64 IOH (max) (mA) -32 Supply current (max) (µA) 38000 Features Flow-through pinout, Partial power down (Ioff), Power up 3-state, Very high speed (tpd 5-10ns) Operating temperature range (°C) -40 to 85 Rating Catalog
SOIC (DW) 24 159.65 mm² (15.5 mm × 10.3 mm) SSOP (DB) 24 63.96 mm² (8.2 mm × 7.8 mm) TSSOP (PW) 24 49.92 mm² (7.8 mm × 6.4 mm)
  • State-of-the-Art EPIC-II BTM BiCMOS Design Significantly Reduces Power Dissipation
  • ESD Protection Exceeds 2000 V Per MIL-STD-883, Method 3015; Exceeds 200 V Using Machine Model (C = 200 pF, R = 0)
  • 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-Impedance State During Power Up and Power Down
  • High-Drive Outputs (-32-mA IOH, 64-mA IOL)
  • Package Options Include Plastic Small-Outline (DW), Shrink Small-Outline (DB), and Thin Shrink Small-Outline (PW) 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.
  • State-of-the-Art EPIC-II BTM BiCMOS Design Significantly Reduces Power Dissipation
  • ESD Protection Exceeds 2000 V Per MIL-STD-883, Method 3015; Exceeds 200 V Using Machine Model (C = 200 pF, R = 0)
  • 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-Impedance State During Power Up and Power Down
  • High-Drive Outputs (-32-mA IOH, 64-mA IOL)
  • Package Options Include Plastic Small-Outline (DW), Shrink Small-Outline (DB), and Thin Shrink Small-Outline (PW) 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.

The SN54ABT841 and SN74ABT841A 10-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 ten transparent D-type latches provide true data at their outputs.

A buffered output-enable (OE\) input can be used to place the ten outputs in either a normal logic state (high or low logic levels) or a high-impedance state. 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.

When VCC is between 0 and 2.1 V, the device is in the high-impedance state during power up or power down. However, to ensure the high-impedance state above 2.1 V, 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 SN54ABT841 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ABT841A is characterized for operation from -40°C to 85°C.

The SN54ABT841 and SN74ABT841A 10-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 ten transparent D-type latches provide true data at their outputs.

A buffered output-enable (OE\) input can be used to place the ten outputs in either a normal logic state (high or low logic levels) or a high-impedance state. 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.

When VCC is between 0 and 2.1 V, the device is in the high-impedance state during power up or power down. However, to ensure the high-impedance state above 2.1 V, 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 SN54ABT841 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ABT841A is characterized for operation from -40°C to 85°C.

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顶层文档 类型 标题 格式选项 下载最新的英语版本 日期
* 数据表 10-Bit Bus-Interface D-Type Latches With 3-State Outputs 数据表 (Rev. D) 1997-5-1
应用手册 Power-Up Behavior of Clocked Devices (Rev. B) PDF | HTML 2022-12-15

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