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參數(shù)資料
| 型號(hào)： | PI74ALVCH16271 |
| 廠商： | Pericom Semiconductor Corp. |
| 英文描述： | 12-Bit To 24-Bit Multiplexed Bus Exchanger with 3-State Outputs |
| 中文描述： | 12位到24位復(fù)用總線交換器與三態(tài)輸出 |
| 文件頁(yè)數(shù)： | 1/6頁(yè) |
| 文件大?。?/td> | 245K |
| 代理商： | PI74ALVCH16271 |
1
PS8360 02/02/99
Product Description
Pericom Semiconductor’s PI74AVC series of logic circuits are
produced using the Company’s advanced 0.35 micron CMOS
technology, achieving industry leading speed.
This 12-bit to 24-bit multiplexed bus exchanger is designed for 2.3V
to 3.6V V
CC
operation.
The PI74ALVCH16271is intended for applications in which two
separate data paths must be multiplexed onto, or demultiplexed
from, a single data path. This device is particularly suitable as an
interface between conventional DRAMs and high-speed
microprocessors
Data is stored in the internal A-to-B registers on the low-to-high
transition of the clock (CLK) input, provided clock-enable (CLKENA)
inputs are low. Proper control of these inputs allows two sequential
12-bit words to be presented as a 24-bit word on the B port.
To maximize memory access throughput, transparent latches in
the B-to-A path allow asynchronous operation. These latches
transfer data when the latch-enable (LE) inputs are low. The select
(SEL) line selects 1B or 2B data for the A outputs. Data flow is
controlled by the active-low output enables (OEA, OEB).
To ensure the high-impedance state during power up or power
down, OE should be tied to V
CC
through a pullup resistor, the
minimum value of the resistor is determined by the current-sinking
capability of the driver.
Active bus-hold circuitry is provided to hold unused or floating
data inputs at a valid logic level.
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12-Bit To 24-Bit Multiplexed Bus Exchanger
PI74ALVCH16271
with 3-State Outputs
Logic Block Diagram
Product Features
PI74ALVCH16271 is designed for low voltage operation,
V
CC
= 2.3V to 3.6V
Hysteresis on all inputs
Typical V
OLP
(Output Ground Bounce)
< 0.8V at V
CC
= 3.3V, T
A
= 25°C
Typical V
OHV
(Output V
OH
Undershoot)
< 2.0V at V
CC
= 3.3V, T
A
= 25°C
Bus Hold retains last active bus state during 3-State,
eliminating the need for external pullup resistors
Industrial operation at 40°C to +85°C
Packages available:
56-pin 240 mil wide plastic TSSOP (A56)
56-pin 300 mil wide plastic SSOP (V56)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PI74ALVCH162820 | 3.3V 10-Bit Flip-Flop with Dual Outputs and 3-State Outputs |
| PI74ALVCH162827 | 20-Bit Buffer Driver with 3-STATE Outputs |
| PI74ALVCH16823 | 18-Bit Bus-Interface Flip-Flop with 3-State Outputs |
| PI74ALVCH16952 | 16-Bit Registered Transceiver With 3-STATE Outputs |
| PI74ALVTC16240 | 16-Bit Buffer/Driver with 3-State Outputs |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PI74ALVCH16271A | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Bus Exchanger |
| PI74ALVCH16271V | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:Bus Exchanger |
| PI74ALVCH162820 | 制造商:PERICOM 制造商全稱(chēng):Pericom Semiconductor Corporation 功能描述:3.3V 10-Bit Flip-Flop with Dual Outputs and 3-State Outputs |
| PI74ALVCH162820A | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:10-Bit D-Type Flip-Flop |
| PI74ALVCH162820AX | 制造商:Pericom Semiconductor Corporation 功能描述:Flip Flop D-Type Bus Interface Pos-Edge 3-ST 1-Element 56-Pin TSSOP T/R |
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