參數(shù)資料
型號(hào): PI74ALVCH16244A
廠(chǎng)商: Pericom
文件頁(yè)數(shù): 1/5頁(yè)
文件大小: 0K
描述: IC BUFF DVR TRI-ST 16BIT 48TSSOP
產(chǎn)品變化通告: Product Discontinuation 08/Jul/2005
標(biāo)準(zhǔn)包裝: 39
系列: 74ALVCH
邏輯類(lèi)型: 緩沖器/線(xiàn)路驅(qū)動(dòng)器,非反相
元件數(shù): 4
每個(gè)元件的位元數(shù): 4
輸出電流高,低: 24mA,24mA
電源電壓: 2.3 V ~ 3.6 V
工作溫度: -40°C ~ 85°C
安裝類(lèi)型: 表面貼裝
封裝/外殼: 48-TFSOP(0.240",6.10mm 寬)
供應(yīng)商設(shè)備封裝: 48-TSSOP
包裝: 管件
1
PS8087C
10/05/04
Description
Pericom Semiconductor’s PI74ALVCH16244 is an non-inverting
16-bit buffer/driver designed for low-voltage 2.3V to 3.6V VCC
operation.
The buffer/driver is designed specifically to improve both the
performance and density of 3-State memory address drivers, clock
drivers, and bus-oriented receivers and transmitters.
The device can be used as four 4-bit buffers, two 8-bit buffers, or
one 16-bit buffer. It provides non-inverting outputs and symmetri-
cal active-low output-enable (OE) inputs.
To ensure the high-impedance state during power up or power
down, OE should be tied to VCC through a pullup resistor in which
the minimum value is determined by the current-sinking capability
of the driver.
The PI74ALVCH16244 has “Bus Hold” which retains the data
input’s last state whenever the data input goes to high-impedance
preventing “floating” inputs and eliminating the need for pullup/
down resistors.
Features
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
Packaging:
– 48-pin 240-mil wide plastic TSSOP (A)
Block Diagram
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
16-Bit Buffer Driver
with 3-State Outputs
PI74ALVCH16244
1OE
1A1
1Y1
1A2
1Y2
1A3
1Y3
1A4
1
47
46
44
43
48
41
40
38
37
25
36
35
33
32
24
30
29
27
26
1Y4
2
3
5
6
8
9
11
12
13
14
16
17
19
20
22
23
3OE
3A1
3Y1
3A2
3Y2
3A3
3Y3
3A4
3Y4
2OE
2A1
2Y1
2A2
2Y2
2A3
2Y3
2A4
2Y4
4OE
4A1
4Y1
4A2
4Y2
4A3
4Y3
4A4
4Y4
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