SN54ALS29821

AKTIV

10-Bit-Bus-Schnittstellen-Flipflops mit Tri-State-Ausgängen

Produktdetails

Number of channels 10 Technology family ALS Supply voltage (min) (V) 4.75 Supply voltage (max) (V) 5.25 Input type Bipolar Output type 3-State Clock frequency (max) (MHz) 75 IOL (max) (mA) 48 IOH (max) (mA) -24 Supply current (max) (µA) 15000 Features High speed (tpd 10-50ns) Operating temperature range (°C) -55 to 125 Rating Military
Number of channels 10 Technology family ALS Supply voltage (min) (V) 4.75 Supply voltage (max) (V) 5.25 Input type Bipolar Output type 3-State Clock frequency (max) (MHz) 75 IOL (max) (mA) 48 IOH (max) (mA) -24 Supply current (max) (µA) 15000 Features High speed (tpd 10-50ns) Operating temperature range (°C) -55 to 125 Rating Military
CDIP (JT) 24 221.44 mm² 32 x 6.92
  • Functionally Equivalent to AMD's AM29821
  • Provide Extra Data Width Necessary for Wider Address/Data Paths or Buses With Parity
  • Outputs Have Undershoot-Protection Circuitry
  • Power-Up High-Impedance State
  • Buffered Control Inputs Reduce dc Loading Effects
  • Package Options Include Plastic Small-Outline (DW) Packages and Standard Plastic (NT) and Ceramic (JT) 300-mil DIPs

 

  • Functionally Equivalent to AMD's AM29821
  • Provide Extra Data Width Necessary for Wider Address/Data Paths or Buses With Parity
  • Outputs Have Undershoot-Protection Circuitry
  • Power-Up High-Impedance State
  • Buffered Control Inputs Reduce dc Loading Effects
  • Package Options Include Plastic Small-Outline (DW) Packages and Standard Plastic (NT) and Ceramic (JT) 300-mil DIPs

 

These 10-bit edge-triggered D-type flip-flops feature 3-state outputs designed specifically for driving highly capacitive or relatively low-impedance loads. These devices are particularly suitable for implementing wider buffer registers, I/O ports, bidirectional bus drivers with parity, and working registers.

On the positive transition of the clock (CLK) input, the Q outputs are true to the data (D) input.

A buffered output-enable () input can place the ten outputs in either a normal logic state (high or low logic levels) or a high-impedance state. The outputs also are 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 interface or pullup components.

does not affect the internal operation of the flip-flops. Old data can be retained or new data can be entered while the outputs are in the high-impedance state.

The SN54ALS29821 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS29821 is characterized for operation from 0°C to 70°C.

 

 

These 10-bit edge-triggered D-type flip-flops feature 3-state outputs designed specifically for driving highly capacitive or relatively low-impedance loads. These devices are particularly suitable for implementing wider buffer registers, I/O ports, bidirectional bus drivers with parity, and working registers.

On the positive transition of the clock (CLK) input, the Q outputs are true to the data (D) input.

A buffered output-enable () input can place the ten outputs in either a normal logic state (high or low logic levels) or a high-impedance state. The outputs also are 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 interface or pullup components.

does not affect the internal operation of the flip-flops. Old data can be retained or new data can be entered while the outputs are in the high-impedance state.

The SN54ALS29821 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS29821 is characterized for operation from 0°C to 70°C.

 

 

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Technische Dokumentation

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Typ Titel Datum
* Data sheet 10-Bit Bus Interface Flip-Flops With 3-State Outputs datasheet (Rev. B) 01 Jan 1995
* SMD SN54ALS29821 SMD 5962-90616 21 Jun 2016
Application note Power-Up Behavior of Clocked Devices (Rev. B) PDF | HTML 15 Dez 2022
Selection guide Logic Guide (Rev. AB) 12 Jun 2017
Application note Understanding and Interpreting Standard-Logic Data Sheets (Rev. C) 02 Dez 2015
User guide LOGIC Pocket Data Book (Rev. B) 16 Jan 2007
Application note Semiconductor Packing Material Electrostatic Discharge (ESD) Protection 08 Jul 2004
Application note TI IBIS File Creation, Validation, and Distribution Processes 29 Aug 2002
Application note Bus-Interface Devices With Output-Damping Resistors Or Reduced-Drive Outputs (Rev. A) 01 Aug 1997
Application note Designing With Logic (Rev. C) 01 Jun 1997
Application note Input and Output Characteristics of Digital Integrated Circuits 01 Okt 1996
Application note Live Insertion 01 Okt 1996
Application note Advanced Schottky (ALS and AS) Logic Families 01 Aug 1995

Design und Entwicklung

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CDIP (JT) 24 Ultra Librarian

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