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HD74LVC4245A_05 Datasheet, PDF (1/9 Pages) Renesas Technology Corp – Octal Bus Transceiver and 3.3 V to 5 V shifters with 3-state Outputs
HD74LVC4245A
Octal Bus Transceiver and 3.3 V to 5 V shifters
with 3-state Outputs
REJ03D0378–0101
Rev.1.01
Apr. 13, 2005
Description
The HD74LVC4245A has eight bus transceivers with three state outputs in a 24 pin package. When (DIR) is high, data
flows from the A inputs to the B outputs, and when (DIR) is low, data flows from the B inputs to the A outputs. A and
B bus are separated by making enable input (OE) high level. And this product has two terminals (VCCA, VCCB), VCCA
(5V) is connected with control input and A bus side, VCCB (3.3V) connected with B bus side. VCCA and VCCB are
isolated. This allows for translation from a 3.3 V to a 5 V environment, and vice versa. Low voltage and high-speed
operation is suitable at the battery drive product (note type personal computer) and low power consumption extends the
life of a battery for long time operation.
Features
• This product function as level shift transceiver that change VCCA input level to VCCB output level, VCCB input level to
VCCA output level by providing different supply voltage to VCCA and VCCB.
• This product is able to the power management: Turn on and off the supply on VCCB side with providing the supply
of VCCA. (Enable input (OE): High level )
• VCCA = 4.5 V to 5.5 V, VCCB = 2.7 V to 3.6 V
• All control input VI (max) = 5.5 V (@VCCA = 0 V to 5.5 V)
• All A bus side input outputs VI/O (max) = 5.5 V
(@VCCA = 0 V or output off state)
• All B bus side input outputs VI/O (max) = 3.6 V
(@VCCB = 0 V or output off state)
• High output current
A bus side : ±24 mA (@VCCA = 4.5 V to 5.5 V)
B bus side : ±12 mA (@VCCB = 2.7 V)
±24 mA (@VCCB = 3.0 V to 3.6 V)
• Ordering Information
Part Name
Package Type
Package Code
Package
Taping Abbreviation
(Previous Code)
Abbreviation
(Quantity)
HD74LVC4245ATEL
TSSOP–24 pin
PTSP0024JB–A
T
EL (1,000 pcs/reel)
(TTP–24DBV)
Function Table
Inputs
OE
DIR
L
L
L
H
H
X
H: High level
L: Low level
X: Immaterial
Z: High impedance
Operation
B data to A bus
A data to B bus
Z
Rev.1.01 Apr. 13, 2005 page 1 of 8
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