參數(shù)資料
型號(hào)： 74LCXR2245WMX
廠商： FAIRCHILD SEMICONDUCTOR CORP
元件分類(lèi)： 通用總線功能
英文描述： Single 8-bit Bus Transceiver
中文描述： LVC/LCX/Z SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20
封裝： 0.300 INCH, MS-013, SOIC-20
文件頁(yè)數(shù)： 1/10頁(yè)
文件大?。?/td> 106K
代理商： 74LCXR2245WMX
2000 Fairchild Semiconductor Corporation
DS500361
www.fairchildsemi.com
October 2000
Revised October 2000
7
R
74LCXR2245
Low Voltage Bidirectional Transceiver with
5V Tolerant Inputs and Outputs and
26
Series Resistors on Both A and B Ports
General Description
The LCXR2245 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) V
CC
applications with capability of interfac-
ing to a 5V signal environment. The T/R input determines
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 26
series resistor helps reduce
output overshoot and undershoot.
The LCXR2245 is fabricated with an advanced CMOS
technology to achieve high speed operation while maintain-
ing CMOS low power dissipation.
Features
I
5V tolerant inputs and outputs
I
2.3V–3.6V V
CC
specifications provided
I
8.0 ns t
PD
max (V
CC
=
3.3V), 10
μ
A I
CC
max
I
Power down high impedance inputs and outputs
I
Supports live insertion/withdrawal (Note 1)
I
±
12 mA output drive (V
CC
=
3.0V)
I
Implements patented noise/EMI reduction circuitry
I
Latch-up performance exceeds 500 mA
I
Equivalent 26
series resistor on all outputs
I
ESD performance:
Human body model
>
2000V
Machine model
>
200V
Note 1:
To ensure the high-impedance state during power up or down, OE
should be tied to V
CC
through a pull-up resistor: the minimum value or the
resistor is determined by the current-sourcing capability of the driver.
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter
“
X
”
to the ordering code.
Logic Symbol
Pin Descriptions
Connection Diagram
Order Number
74LCXR2245WM
74LCXR2245SJ
74LCXR2245MSA
74LCXR2245MTC
Package Number
M20B
M20D
MSA20
MTC20
Package Description
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
20-Lead Shrink Small Outline Package (SSOP), EIAJ TYPE II, 5.3mm Wide
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Pin Names
Description
OE
T/R
A
0
–
A
7
B
0
–
B
7
Output Enable Input
Transmit/Receive Input
Side A Inputs or 3-STATE Outputs
Side B Inputs or 3-STATE Outputs
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