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參數資料
| 型號： | HD74ALVCH162270 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | Quadruple 1-Of-2 Data Selectors/Multiplexers 16-CFP -55 to 125 |
| 中文描述： | 12位至24位注冊總線交換器與三態輸出 |
| 文件頁數： | 1/14頁 |
| 文件大小： | 66K |
| 代理商： | HD74ALVCH162270 |
HD74ALVCH162270
12-bit to 24-bit Registered Bus Exchanger with 3-state Outputs
ADE-205-178A (Z)
2nd. Edition
March 1998
Description
The HD74ALVCH162270 is used in applications where data must be transferred from a narrow high speed
bus to a wide lower frequency bus. The device provides synchronous data exchange between the two ports.
Data is stored in the internal registers on the low to high transition of the clock (CLK) input when the
appropriate
CLKEN
inputs are low. The select (
SEL
) line selects 1B or 2B data for the A outputs. For data
transfer in the A to B direction, a two stage pipeline is provided in the A to 1B path, with a single storage
register in the A to 2B path. Proper control of the
CLKENA
inputs allows two sequential 12-bit words to
be presented synchronously as a 24-bit word on the B port. Data flow is controlled by the active low output
enables (
OEA
,
OEB
). The control terminals are registered to synchronize the bus direction changes with
CLK. Active bus hold circuitry is provided to hold unused or floating data inputs at a valid logic level. All
outputs, which are designed to sink up to 12 mA, include 26
resistors to reduce overshoot and
undershoot.
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 ±12 mA (@V
CC
= 3.0 V)
Bus hold on data inputs eliminates the need for external pullup / pulldown resistors
All outputs have equivalent 26
series resistors, so no external resistors are required.
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| HD74ALVCH162374 | Quadruple 1-Of-2 Data Selectors/Multiplexers 16-CFP -55 to 125 |
| HD74ALVCH16244 | Quadruple 1-Of-2 Data Selectors/Multiplexers 16-CDIP -55 to 125 |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| HD74ALVCH162334 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:16-bit Universal Bus Driver with 3-state Outputs |
| HD74ALVCH162373 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:16-bit Transparent D-type Latches with 3-state Outputs |
| HD74ALVCH162374 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:16-bit Edge triggered D-type Flip Flops with 3-state Outputs |
| HD74ALVCH16244 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:16-bit Buffers / Drivers with 3-state Outputs |
| HD74ALVCH16244-T(48P) | 制造商:Renesas Electronics Corporation 功能描述: |
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