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74LVT2245 Datasheet(PDF) 1 Page - Fairchild Semiconductor

Part No. 74LVT2245
Description  Low Voltage Octal Bidirectional Transceiver with 3-STATE Inputs/Outputs and 25Ω Series Resistors in the B Port Outputs
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Maker  FAIRCHILD [Fairchild Semiconductor]
Homepage  http://www.fairchildsemi.com
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© 2005 Fairchild Semiconductor Corporation
DS012173
www.fairchildsemi.com
November 1999
Revised March 2005
74LVT2245 • 74LVTH2245
Low Voltage Octal Bidirectional Transceiver with
3-STATE Inputs/Outputs and 25
: Series Resistors
in the B Port Outputs
General Description
The LVT2245 and LVTH2245 contain eight non-inverting
bidirectional
buffers
with
3-STATE
outputs
and
are
intended for bus-oriented applications. The Transmit/
Receive (T/R) input determines the direction of data flow
through the bidirectional transceiver. Transmit (active-
HIGH) enables data from A Ports to B Ports; Receive
(active-LOW) enables data from B Ports to A Ports. The
Output Enable input, when HIGH, disables both A and B
Ports by placing them in a high impedance state. The
equivalent 25
:-series resistor in the B Port helps reduce
output overshoot and undershoot.
The LVTH2245 data inputs include bushold, eliminating the
need for external pull-up resistors to hold unused inputs.
These transceivers are designed for low voltage (3.3V)
VCC applications, but with the capability to provide a TTL
interface
to
a
5V environment.
The
LVT2245
and
LVTH2245 are fabricated with an advanced BiCMOS tech-
nology to achieve high speed operation similar to 5V ABT
while maintaining low power dissipation.
Features
s Input and output interface capability to systems at
5V VCC
s Equivalent 25
: series resistor on B Port outputs
s Bushold data inputs eliminate the need for external
pull-up resistors to hold unused inputs (74LVTH2245),
also available without bushold feature (74LVT2245)
s Live insertion/extraction permitted
s Power Up/Down high impedance provides glitch-free
bus loading
s Outputs source/sink
12 mA/12 mA on B Port,
32 mA/64 mA on A Port
s Latch-up performance exceeds 500 mA
s ESD performance:
Human-body model
! 2000V
Machine model
! 200V
Charged-device model
! 1000V
Ordering Code:
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.
Pb-Free package per JEDEC J-STD-020B.
Note 1: “_NL” indicates Pb-Free package (per JEDEC J-STD-020B). Device available in Tape and Reel only.
Order Number
Package
Package Description
Number
74LVT2245WM
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
74LVT2245SJ
M20D
Pb-Free 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74LVT2245MSA
MSA20
20-Lead Shrink Small Outline Package (SSOP), JEDEC MO-150, 5.3mm Wide
74LVT2245MTC
MTC20
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
74LVT2245MTCX_NL
(Note 1)
MTC20
Pb-Free 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm
Wide
74LVTH2245WM
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
74LVTH2245SJ
M20D
Pb-Free 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74LVTH2245MSA
MSA20
20-Lead Shrink Small Outline Package (SSOP), JEDEC MO-150, 5.3mm Wide
74LVTH2245MTC
MTC20
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
74LVTH2245MTCX_NL
(Note 1)
MTC20
Pb-Free 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm
Wide




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