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74ALVCH245WM 반도체 회로 부품 판매점

Low Voltage Bidirectional Transceiver with Bushold



Fairchild Semiconductor 로고
Fairchild Semiconductor
74ALVCH245WM 데이터시트, 핀배열, 회로
September 2001
Revised February 2002
74ALVCH245
Low Voltage Bidirectional Transceiver with Bushold
General Description
The ALVCH245 contains eight non-inverting bidirectional
buffers with 3-STATE outputs and is intended for bus ori-
ented applications. The T/R input determines the direction
of data flow. The OE input disables both the A and B Ports
by placing them in a high impedance state. The ALVCH245
data inputs include active bushold circuitry, eliminating the
need for external pull-up resistors to hold unused or float-
ing data inputs at a valid logic level.
The 74ALVCH245 is designed for low voltage (1.65V to
3.6V) VCC applications.
The 74ALVCH245 is fabricated with an advanced CMOS
technology to achieve high-speed operation while main-
taining low CMOS power dissipation.
Features
s 1.65V to 3.6V VCC supply operation
s Bushold on data inputs eliminates the need for external
pull-up/pull-down resistors
s tPD
3.6 ns max for 3.0V to 3.6V VCC
4.2 ns max for 2.3V to 2.7V VCC
6 ns max for 1.65V to 1.95V VCC
s Uses patented Quiet Series noise/EMI reduction
circuitry
s Latchup conforms to JEDEC JED78
s ESD performance:
Human body model > 2000V
Machine model > 200V
Ordering Code:
Order Number Package Number
Package Description
74ALVCH245WM
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
74ALVCH245MTC
MTC20
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbol
Pin Descriptions
Pin Names
Description
OE
T/R
A0A7
B0B7
Output Enable Input (Active LOW)
Transmit/Receive Input
Side A Bushold Inputs or 3-STATE Outputs
Side B Bushold Inputs or 3-STATE Outputs
Quiet Seriesis a trademark of Fairchild Semiconductor Corporation.
© 2002 Fairchild Semiconductor Corporation DS500648
www.fairchildsemi.com


74ALVCH245WM 데이터시트, 핀배열, 회로
Connection Diagram
Logic Diagram
Truth Table
Inputs
Outputs
OE T/R
L L Bus B0B7 Data to Bus A0A7
L H Bus A0A7 Data to Bus B0B7
H X HIGH Z State on A0A7, B0B7
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
www.fairchildsemi.com
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74ALVCH245WM transceiver

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74ALVCH245WM

Low Voltage Bidirectional Transceiver with Bushold - Fairchild Semiconductor