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邏輯和電壓轉換
正反器、鎖存器和暫存器
D 型鎖存器

SN74LVC841A

現行

具有 3 態輸出的 10 位元匯流排介面 D 型鎖存器

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產品規格表

SN74LVC841A

現行
產品規格表 立即訂購

產品詳細資料

Number of channels 10 Technology family LVC Supply voltage (min) (V) 1.65 Supply voltage (max) (V) 3.6 Input type Standard CMOS Output type 3-State Clock frequency (max) (MHz) 100 IOL (max) (mA) 24 IOH (max) (mA) -24 Supply current (max) (µA) 10 Features Balanced outputs, Flow-through pinout, Over-voltage tolerant inputs, Partial power down (Ioff), Very high speed (tpd 5-10ns) Operating temperature range (°C) -40 to 85 Rating Catalog
Number of channels 10 Technology family LVC Supply voltage (min) (V) 1.65 Supply voltage (max) (V) 3.6 Input type Standard CMOS Output type 3-State Clock frequency (max) (MHz) 100 IOL (max) (mA) 24 IOH (max) (mA) -24 Supply current (max) (µA) 10 Features Balanced outputs, Flow-through pinout, Over-voltage tolerant inputs, Partial power down (Ioff), Very high speed (tpd 5-10ns) Operating temperature range (°C) -40 to 85 Rating Catalog
SOIC (DW) 24 159.65 mm² 15.5 x 10.3 SSOP (DB) 24 63.96 mm² 8.2 x 7.8 TSSOP (PW) 24 49.92 mm² 7.8 x 6.4
  • Operates From 1.65 V to 3.6 V
  • Inputs Accept Voltages to 5.5 V
  • Max tpd of 6.7 ns at 3.3 V
  • Typical VOLP (Output Ground Bounce)
       <0.8 V at VCC = 3.3 V, TA = 25°C
  • Typical VOHV (Output VOH Undershoot)
       >2 V at VCC = 3.3 V, TA = 25°C
  • Ioff Supports Partial-Power-Down Mode Operation
  • Supports Mixed-Mode Signal Operation on All Ports (5-V Input/Output Voltage With 3.3-V VCC)
  • Latch-Up Performance Exceeds 250 mA Per JESD 17
  • ESD Protection Exceeds JESD 22
    • 2000-V Human-Body Model (A114-A)
    • 200-V Machine Model (A115-A)
    • 1000-V Charged-Device Model (C101)
  • Operates From 1.65 V to 3.6 V
  • Inputs Accept Voltages to 5.5 V
  • Max tpd of 6.7 ns at 3.3 V
  • Typical VOLP (Output Ground Bounce)
       <0.8 V at VCC = 3.3 V, TA = 25°C
  • Typical VOHV (Output VOH Undershoot)
       >2 V at VCC = 3.3 V, TA = 25°C
  • Ioff Supports Partial-Power-Down Mode Operation
  • Supports Mixed-Mode Signal Operation on All Ports (5-V Input/Output Voltage With 3.3-V VCC)
  • Latch-Up Performance Exceeds 250 mA Per JESD 17
  • ESD Protection Exceeds JESD 22
    • 2000-V Human-Body Model (A114-A)
    • 200-V Machine Model (A115-A)
    • 1000-V Charged-Device Model (C101)

This 10-bit bus-interface D-type latch is designed for 1.65-V to 3.6-V VCC operation.

The SN74LVC841A is designed specifically for driving highly capacitive or relatively low-impedance loads. It is particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.

The ten latches are transparent D-type latches. The device has noninverting data (D) inputs and provides true data at its 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 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.

Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of these devices as translators in a mixed 3.3-V/5-V system environment.

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.

This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.

This 10-bit bus-interface D-type latch is designed for 1.65-V to 3.6-V VCC operation.

The SN74LVC841A is designed specifically for driving highly capacitive or relatively low-impedance loads. It is particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.

The ten latches are transparent D-type latches. The device has noninverting data (D) inputs and provides true data at its 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 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.

Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of these devices as translators in a mixed 3.3-V/5-V system environment.

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.

This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.
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類型 標題 日期
* Data sheet SN74LVC841A datasheet (Rev. J) 2003年 7月 31日
Application note Power-Up Behavior of Clocked Devices (Rev. B) PDF | HTML 2022年 12月 15日
Application note Implications of Slow or Floating CMOS Inputs (Rev. E) 2021年 7月 26日
Selection guide Little Logic Guide 2018 (Rev. G) 2018年 7月 6日
Selection guide Logic Guide (Rev. AB) 2017年 6月 12日
Application note How to Select Little Logic (Rev. A) 2016年 7月 26日
Application note Understanding and Interpreting Standard-Logic Data Sheets (Rev. C) 2015年 12月 2日
User guide LOGIC Pocket Data Book (Rev. B) 2007年 1月 16日
Product overview Design Summary for WCSP Little Logic (Rev. B) 2004年 11月 4日
Application note Semiconductor Packing Material Electrostatic Discharge (ESD) Protection 2004年 7月 8日
Application note Selecting the Right Level Translation Solution (Rev. A) 2004年 6月 22日
User guide Signal Switch Data Book (Rev. A) 2003年 11月 14日
Application note Use of the CMOS Unbuffered Inverter in Oscillator Circuits 2003年 11月 6日
User guide LVC and LV Low-Voltage CMOS Logic Data Book (Rev. B) 2002年 12月 18日
Application note Texas Instruments Little Logic Application Report 2002年 11月 1日
Application note TI IBIS File Creation, Validation, and Distribution Processes 2002年 8月 29日
More literature Standard Linear & Logic for PCs, Servers & Motherboards 2002年 6月 13日
Application note 16-Bit Widebus Logic Families in 56-Ball, 0.65-mm Pitch Very Thin Fine-Pitch BGA (Rev. B) 2002年 5月 22日
Application note Power-Up 3-State (PU3S) Circuits in TI Standard Logic Devices 2002年 5月 10日
More literature STANDARD LINEAR AND LOGIC FOR DVD/VCD PLAYERS 2002年 3月 27日
Application note Migration From 3.3-V To 2.5-V Power Supplies For Logic Devices 1997年 12月 1日
Application note Bus-Interface Devices With Output-Damping Resistors Or Reduced-Drive Outputs (Rev. A) 1997年 8月 1日
Application note CMOS Power Consumption and CPD Calculation (Rev. B) 1997年 6月 1日
Application note LVC Characterization Information 1996年 12月 1日
Application note Input and Output Characteristics of Digital Integrated Circuits 1996年 10月 1日
Application note Live Insertion 1996年 10月 1日
Design guide Low-Voltage Logic (LVC) Designer's Guide 1996年 9月 1日
Application note Understanding Advanced Bus-Interface Products Design Guide 1996年 5月 1日

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