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74LCXH245MSA 반도체 회로 부품 판매점

Low Voltage Bidirectional Transceiver with Bushold



Fairchild Semiconductor 로고
Fairchild Semiconductor
74LCXH245MSA 데이터시트, 핀배열, 회로
October 2000
Revised September 2001
74LCXH245
Low Voltage Bidirectional Transceiver with Bushold
General Description
The LCXH245 contains eight non-inverting bidirectional
buffers with 3-STATE outputs and is intended for bus ori-
ented applications. The device is designed for low voltage
(2.5V and 3.3V) VCC applications. The T/R input deter-
mines the direction of data flow through the device. The OE
input disables both the A and B ports by placing them in a
high impedance state.
The LCXH245 is fabricated with an advanced CMOS tech-
nology to achieve high speed operation while maintaining
CMOS low power dissipation. The LCXH16244 data inputs
include active bushold circuitry, eliminating the need for
external pull-up resistors to hold unused or floating data
inputs at a valid logic level.
Features
s 5V tolerant control inputs
s 2.3V–3.6V VCC specifications provided
s 7.0 ns tPD max (VCC = 3.3V), 10 µA ICC max
s Power down high impedance outputs
s ±24 mA output drive (VCC = 3.0V)
s Implements patented noise/EMI reduction circuitry
s Latch-up performance exceeds 500 mA
s Bushold on inputs eliminates the need for external
pull-up/pull-down resistors
s ESD performance:
Human body model > 2000V
Machine model > 200V
Ordering Code:
Order Number Package Number
Package Description
74LCXH245WM
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
74LCXH245SJ
M20D
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74LCXH245MSA
MSA20
20-Lead Shrink Small Outline Package (SSOP), EIAJ TYPE II, 5.3mm Wide
74LCXH245MTC
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 Xto the ordering code.
Logic Symbol
Connection Diagram
Pin Descriptions
Pin Names
Description
OE
T/R
A0A7
B0B7
Output Enable Input
Transmit/Receive Input
Side A Inputs or 3-STATE Outputs (Bushold)
Side B Inputs or 3-STATE Outputs (Bushold)
GTOis a trademark of Fairchild Semiconductor Corporation.
© 2001 Fairchild Semiconductor Corporation DS500363
www.fairchildsemi.com


74LCXH245MSA 데이터시트, 핀배열, 회로
Truth Table
Inputs
OE T/R
Outputs
L L Bus B0 B7 Data to Bus A0 A7
L H Bus A0 A7 Data to Bus B0 B7
H X HIGH Z State on A0 A7, B0 B7 (Note 1)
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
Note 1: Unused bus terminals during HIGH Z State must be held HIGH or LOW.
Logic Diagram
www.fairchildsemi.com
2




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74LCXH245MSA transceiver

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74LCXH245MSA

Low Voltage Bidirectional Transceiver with Bushold - Fairchild Semiconductor