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參數(shù)資料
| 型號： | HD74ALVCH16821 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | 3.3-V 20-bit Bus Interface Flip Flops with 3-state Outputs(三態(tài)輸出的3.3V20位總線接口D觸發(fā)器) |
| 中文描述： | 3.3 V的20位總線接口字拖與三態(tài)輸出（三態(tài)輸出的3.3V20位總線接口?觸發(fā)器） |
| 文件頁數(shù)： | 1/12頁 |
| 文件大小： | 51K |
| 代理商： | HD74ALVCH16821 |
HD74ALVCH16821
3.3-V 20-bit Bus Interface Flip Flops with 3-state Outputs
ADE-205-171B (Z)
3rd. Edition
December 1999
Description
The HD74ALVCH16821 can be used as two 10-bit flip flops or one 20-bit flip flop. The 20 flip flops are
edge triggered D-type flip flops. On the positive transition of the clock (CLK) input, the device provides
true data at the Q outputs. A buffered output enable (
OE
) input can be used to place the ten outputs in
either a normal logic state (high or low 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 line without need for interface or pullup components. The output enable
(
OE
) input does not affect the internal operations of the flip flops. Old data can be retained or new data can
be entered while the outputs are in the high impedance state. Active bus hold circuitry is provided to hold
unused or floating data inputs at a valid logic level.
Features
V
CC
= 2.3 V to 3.6 V
Typical V
OL
ground bounce < 0.8 V (@V
CC
= 3.3 V, Ta = 25
°
C)
Typical V
OH
undershoot > 2.0 V (@V
CC
= 3.3 V, Ta = 25
°
C)
High output current
±
24 mA (@V
CC
= 3.0 V)
Bus hold on data inputs eliminates the need for external pullup / pulldown resistors
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HD74ALVCH16825 | 18-bit Buffers / Drivers with 3-state Outputs(三態(tài)輸出的18位緩沖器/驅(qū)動器) |
| HD74ALVCH16827 | 20-bit Buffers / Drivers with 3-state Outputs(三態(tài)輸出的20位緩沖器/驅(qū)動器) |
| HD74ALVCH16830 | 1-bit to 2-bit Address Driver with 3-state Outputs(三態(tài)輸出1位-2位地址驅(qū)動器) |
| HD74ALVCH16831 | 1-to 4 Address Register / Driver with 3-state Outputs(三態(tài)輸出1-4地址寄存器/驅(qū)動器) |
| HD74ALVCH16835 | 18-bit Universal Bus Driver with 3-state Outputs(三態(tài)輸出的18位通用總線驅(qū)動器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HD74ALVCH16825 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:18-bit Buffers / Drivers with 3-state Outputs |
| HD74ALVCH16827 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:20-bit Buffers / Drivers with 3-state Outputs |
| HD74ALVCH16830 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:1-bit to 2-bit Address Driver with 3-state Outputs |
| HD74ALVCH16831 | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:1-to 4 Address Register / Driver with 3-state Outputs |
| HD74ALVCH16832 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
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