Rev.2.00 Oct. 21, 2004 page 1 of 10
HD74LVCC3245A
Octal Bus Transceiver with adjustable output voltage
and 3-state Outputs
REJ03D0379–0200
Rev.2.00
Oct. 21, 2004
Description
The HD74LVCC3245 A has ei ght bu s tra ns cei vers 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. This 8-bit non-inverting bus transceiver contains two
separate power-supply rails.
And this product has two terminals (V
CCA
, V
CCB
), V
CCA
is connected with control input an d A bus side, V
CCB
is
connected with B bus side. V
CCA
and V
CCB
are isolated.
The B port is designed to track V
CCB
, which accepts voltage from 3 V to 5.5 V, and the A port is designed to track V
CCA
,
which operates at 2.3 V to 3.6 V. This allows for translation from a 3.3 V to a 5 V system environment and vice versa,
or from a 2.5 V to a 3.3 V system 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 V
CCA
input level to V
CCB
output level, V
CCB
input level to
V
CCA
output level by providing different supp ly voltage to V
CCA
and V
CCB
.
• This product is able to the power management : Turn on and off the supply on V
CCB
side with providing the supply
of V
CCA
(Enable input (OE) : High level)
• V
CCA
= 2.3 V to 3.6 V, V
CCB
= 3.0 V to 5.5 V
• All control input V
I
(max) = 5.5 V (@V
CCA
= 0 V to 5.5 V)
• All A bus side input outputs V
I/O
(max) = 5.5 V
(@V
CCA
= 0 V or output off state)
• All B bus side input outputs V
I/O
(max) = 5.5 V
(@V
CCB
= 0 V or output off state)
• Hi gh output cu rrent
A bus side: ±8 mA (@V
CCA
= 2.3 V)
±12 mA (@V
CCA
= 2.7 V)
±24 mA (@V
CCA
= 3.0 V)
B bus side: ±24 mA (@V
CCB
= 3.0 V)
• Ordering Information
Part Name Package Type Package Code
Package
Abbreviation
Taping Abbreviation
(Quantity)
HD74LVCC3245ATEL TSSOP–24 pin TTP–24DBV T EL (1,000 pcs/reel)
