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Renesas Electronics Components Datasheet

HD74LVCC4245A Datasheet

Octal Dual-supply Bus Transceiver

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HD74LVCC4245A
Octal Dual-supply Bus Transceiver with configurable
output voltage with 3-state Outputs
REJ03D0380–0101
Rev.1.01
Apr. 13, 2005
Description
The HD74LVCC4245A 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. This 8-bit non-inverting bus transceiver uses two
separate power-supply rails.
And this product has two terminals (VCCA, VCCB), VCCA is connected with control input and a bus side, VCCB is
connected with B bus side. VCCA and VCCB are isolated.
The A port, VCCA, is dedicated to accept a 5 V supply level, and the configurable B port, which is designed to track
VCCB, accepts voltages from 3 V to 5 V. 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 5.5 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) = 5.5 V
(@VCCB = 0 V or output off state)
High output current
A bus side: ±24 mA (@VCCA = 4.5 V)
B bus side: ±24 mA (@VCCB = 2.7 V to 4.5 V)
Ordering Information
Part Name
Package Type
Package Code
Package
Taping Abbreviation
(Previous Package)
Abbreviation
(Quantity)
HD74LVCC4245ATEL 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


Renesas Electronics Components Datasheet

HD74LVCC4245A Datasheet

Octal Dual-supply Bus Transceiver

No Preview Available !

HD74LVCC4245A
Pin Arrangement
VCCA 1
DIR 2
A1 3
A2 4
A3 5
A4 6
A5 7
A6 8
A7 9
A8 10
GND 11
GND 12
(Top view)
24 VCCB
23 NC
22 OE
21 B1
20 B2
19 B3
18 B4
17 B5
16 B6
15 B7
14 B8
13 GND
Absolute Maximum Ratings
Item
Symbol
Ratings
Unit
Conditions
Supply voltage
Input voltage*1
Input / output voltage
VCCA, VCCB
VI
VI/O
Input diode current
Output diode current
Output current
VCCA, VCCB, GND current
Maximum power dissipation
at Ta = 25°C (in still air)*2
IIK
IOK
IO
ICCA, ICCB, IGND
PT
–0.5 to 6.0
–0.5 to 6.0
–0.5 to VCCA+0.5
–0.5 to 6.0
–0.5 to VCCB+0.5
–0.5 to 6.0
–50
–50
50
±50
100
862
V
V DIR, OE
V A port output “H” or “L”
A port output “Z” or VCCA: OFF
B port output “H” or “L”
B port output “Z” or VCCB: OFF
mA VI < 0
mA VO < 0
VO > VCC+0.5
mA
mA
mW TSSOP
Storage temperature
Tstg
–65 to 150
°C
Notes: The absolute maximum ratings are values, which must not individually be exceeded, and furthermore, no two of
which may be realized at the same time.
1. The input and output voltage ratings may be exceeded even if the input and output clamp-current ratings are
observed.
2. The maximum package power dissipation was calculated using a junction temperature of 150°C.
Rev.1.01 Apr. 13, 2005 page 2 of 8


Part Number HD74LVCC4245A
Description Octal Dual-supply Bus Transceiver
Maker Renesas
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