參數(shù)資料
型號(hào): PI74ALVCH16260A
廠商: Pericom
文件頁(yè)數(shù): 1/6頁(yè)
文件大?。?/td> 0K
描述: IC 12/14-BIT MUX/LATCH 56-TSSOP
產(chǎn)品變化通告: Product Discontinuation 17/Feb/2006
標(biāo)準(zhǔn)包裝: 35
系列: 74ALVCH
邏輯類型: D 型,可尋址
電路: 12:24
輸出類型: 三態(tài)
電源電壓: 2.3 V ~ 3.6 V
獨(dú)立電路: 1
延遲時(shí)間 - 傳輸: 1ns
輸出電流高,低: 24mA,24mA
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 56-TFSOP(0.240",6.10mm 寬)
供應(yīng)商設(shè)備封裝: 56-TSSOP
包裝: 管件
1
PS8089D
05/24/06
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12-Bit To 24-Bit Multiplexed D-Type Latch
with 3-State Outputs
Logic Block Diagram
G1
OE2B
C1
1D
1B1
TO 11 OTHER CHANNELS
OE1B
OEA
A1
LE1B
LE2B
LEA1B
LEA2B
SEL
1
C1
1D
C1
1D
C1
1D
2B1
23
6
28
8
1
29
56
55
30
27
2
Product Features
PI74ALVCH16260 is designed for low voltage operation
VCC = 2.3V to 3.6V
Hysteresis on all inputs
Typical VOLP (Output Ground Bounce)
< 0.8V at VCC = 3.3V, TA = 25°C
Typical VOHV (Output VOH Undershoot)
< 2.0V at VCC = 3.3V, TA = 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 (A)
PI74ALVCH16260
Product Description
ThePI74ALVCH16260isa12-bitto24-bitmultiplexedD-typelatch
designed for 2.3V to 3.6 VCC operation. It is used in applications
where two separate datapaths must be multiplexed onto, or
demultiplexed from, a single data path.
Typical applications include multiplexing and/or demultiplexing
address and data information in microprocessor or bus-interface
and in memory-interleaving.
Three12-bitI/Oports(A1-A12,1B1-1B12,and2B1-2B12)areavailable
for address and/or data transfer. The output-enable (OE1B, OE2B,
and OEA) inputs control bus transceiver functions. The OE1B and
OE2BcontrolsignalsalsoallowbankcontrolintheA-to-Bdirection.
Address and/or data information can be stored using the internal
storagelatches.Thelatch-enable(LE1B,LE2B,LEA1B,andLEA2B)
inputs are used to control data storage. When the latch-enable input
is HIGH, the latch is transparent. When the latch-enable input goes
LOW, the data present at the inputs is latched and remains latched
until the latch-enable input is returned HIGH.
To ensure high-impedance state during power up or power down,
OE should be tied to VCC through a pullup resistor whose minimum
value 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.
06-0132
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