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74LCXZ2245WM Arkusz danych(PDF) 1 Page - Fairchild Semiconductor

Numer części 74LCXZ2245WM
Szczegółowy opis  Low Voltage Bidirectional Transceiver with 5V Tolerant Inputs and Outputs and 26ohm Series Resistors in B Outputs
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Producent  FAIRCHILD [Fairchild Semiconductor]
Strona internetowa  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

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© 2005 Fairchild Semiconductor Corporation
DS500410
www.fairchildsemi.com
October 2000
Revised March 2005
74LCXZ2245
Low Voltage Bidirectional Transceiver
with 5V Tolerant Inputs and Outputs
and 26
: Series Resistors in B Outputs
General Description
The LCXZ2245 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
(2.7V and 3.3V) VCC 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 in the B Port out-
put helps reduce output overshoot and undershoot.
The LCXZ2245 is fabricated with an advanced CMOS
technology to achieve high speed operation while maintain-
ing CMOS low power dissipation.
When VCC is between 0 and 1.5V, the LCXZ2245 is on the
high impedance state during power up or power down. This
places the outputs in the high impedance (Z) state prevent-
ing intermittent low impedance loading or glitching in bus
oriented applications.
Features
s 5V tolerant inputs and outputs
s 2.7V–3.6V VCC specifications provided
s 7.0 ns tPD max (VCC 3.3V), 10 PA ICC max
s Power down high impedance inputs and outputs
s Supports live insertion/withdrawal (Note 1)
s
r12 mA output drive on the B Port (VCC 3.0V)
s Implements patented noise/EMI reduction circuitry
s Latch-up performance exceeds 500 mA
s Equivalent 26
: series resistor on all B Port outputs
s 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 VCC 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.
Pb-Free package per JEDEC J-STD-020B.
Logic Symbol
Pin Descriptions
Connection Diagram
Order Number
Package Number
Package Description
74LCXZ2245WM
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
74LCXZ2245SJ
M20D
Pb-Free 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74LCXZ2245MSA
MSA20
20-Lead Shrink Small Outline Package (SSOP), JEDEC MO-150, 5.3mm Wide
74LCXZ2245MTC
MTC20
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Pin Names
Description
OE
Output Enable Input
T/R
Transmit/Receive Input
A0–A7
Side A Inputs or 3-STATE Outputs
B0–B7
Side B Inputs or 3-STATE Outputs


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