SGS Thomson Microelectronics 74LVX3245M, 74LVX3245TTR, 74LVX3245MTR Datasheet
74LVX324 5
OCTAL DUAL SUPPLY BUS TRANSCEIVER
■ HIGH SPEED :
t
= 8ns (MAX.) at TA=25°C
PD
V
= 3.3V V
CCA
■ LOW POWER DISSIPATION:
I
= I
CCA
■ LOW NOISE: V
■ SYMMETRICAL OUTPUT IMPEDANCE:
|I
| = IOL = 24mA (MIN)
OH
■ BALANCED PROPAGATION DELAYS:
t
≅ t
PLH
■ OPERATING VOLTAGE R ANGE:
V
CCA
V
CCB
= 5µA(MAX.) at TA=25°C
CCB
PHL
(OPR) = 2.7V to 3.6V (1.2V Data Retention)
(OPR) = 4.5V to 5.5V (1.2V Data Retention)
= 5.0V
CCB
=0.3V (TYP.) at VCC =3.3V
OLP
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 3245
■ IMPROVED LATCH-UP IMMUNITY
DESCRIPTION
The 74LVX3245 is a dual supply low voltage
CMOS OCTAL BUS TRANSCEIVER fabricated
with sub-micron silicon gate and double-layer
metal wi ri ng C
2
MOS technology. Designed for use
as an interface between a 5V bus and a 3.3V bus
in a mixed 5V/3.3V supply systems, it achieves
high speed operation while maintaining the CMOS
low power dissipation.
TSSOPSOP
ORDER CODES
PACKAGE TUBE T & R
SOP 74LVX3245M 74LVX3245MTR
TSSOP 74LVX3245TTR
This IC is intended for two-way asynchronous
communication between data buses and the
direction of data transmission is determined by
DIR input. The enable input G
can be used to
disable the device so that the buses are effectively
isolated.
The A-port interfaces with the 3V bus, the B-port
with the 5V bus.
All inputs are equipped with protection circuits
against static discharge, giving them 2KV ESD
immunity and transient excess voltage.
PIN CONNECTION AND IEC LOGIC SYMBOLS
1/10July 2001
74LVX3245
INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION
PIN No SYMBOL NAME QND FUNCTION
2 DIR Directional Control
3, 4, 5, 6, 7,
8, 9, 10
21, 20, 19,
18, 17, 16,
15, 14
22 G
11, 12, 13 GND Ground (0V)
23 NC Not Connected
1V
24 V
TRUTH TABLE
A1 to A8 Data Inputs/Outputs
B1 to B8 Data Inputs/Outputs
CCA
CCB
Output Enable Input
Positive Supply Voltage
Positive Supply Voltage
INPUTS FUNCTION
OUTPUT
G
DIR A BUS B BUS
L L OUTPUT INPUT A = B
L H INPUT OUTPUT B = A
HXZZZ
X : Don’t Care
Z : High Impedance
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
V
CCA
V
CCB
V
V
I/OA
V
I/OB
I
I
OK
I
OA
I
OB
I
CCA
I
CCB
P
T
T
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied
Supply Voltage
Supply Voltage
DC Input Voltage -0.5 to V
I
DC I/O Voltage -0.5 to V
DC I/O Voltage -0.5 to V
DC Input Diode Current
IK
DC Output Diode Current
DC Output Current
DC Output Current
DC VCC or Ground Current
DC VCC or Ground Current
Power Dissipation
d
Storage Temperature
stg
Lead Temperature (10 sec)
L
-0.5 to +7.0 V
-0.5 to +7.0 V
+ 0.5
CCA
+ 0.5
CCA
+ 0.5
CCB
± 20 mA
± 50 mA
± 50 mA
± 50 mA
± 200 mA
± 100 mA
180 mW
-65 to +150 °C
300 °C
V
V
V
2/10
74LVX3245
RECOMMENDED OPERATING CONDITIONS
Symbol Parameter Value Unit
V
CCA
V
CCB
V
V
I/OA
V
I/OB
T
dt/dv Input Rise and Fall Time (note 2) 0 to 10 ns/V
1) VIN from 30 % to 70% of V
2) V
CCA
Supply Voltage (note 1)
Supply Voltage (note 1)
Input Voltage 0 to V
I
I/O Voltage 0 to V
I/O Voltage 0 to V
Operating Temperature
op
= 2.7 to 3.6V; V
CC
= 4.5 to 5.5V;
CCB
2.7 to 3.6 V
4.5 to 5.5 V
CCA
CCA
CCB
-55 to 125 °C
V
V
V
DC SPECIFICATIONS FOR V
Symbol Parameter
V
V
V
I
High Level Input
IHA
Voltage
V
Low Level Input
ILA
Voltage
High Level
OHA
Output Voltage
Low Level Output
OLA
Voltage
I
Input Leakage
IA
Current
High Impedance
OZA
Output Leakage
Current
I
∆I
Quiescent Supply
CCtA
Current
Maximum
CCtA
Quiescent Supply
Current / Input
(An, DIR, G
V
CCA
(V)
3.6 5.0 2.0 2.0 2.0
2.7 5.0 2.0 2.0 2.0
3.6 5.0 0.8 0.8 0.8
2.7 5.0 0.8 0.8 0.8
3.0 4.5
3.0 4.5
2.7 4.5
2.7 4.5
3.0 4.5
3.0 4.5
2.7 4.5
2.7 4.5
3.6 5.5
3.6 5.5 VIA = V
3.6 5.5 VIA = V
3.6 5.5 V
)
CCA
Test Condition Value
= 25 °C
T
V
CCB
(V)
IO=-100 µA
I
=-24 mA
O
I
=-12 mA
O
I
=-24 mA
O
IO=100 µA
I
=24 mA
O
I
=12 mA
O
I
=24 mA
O
V
= VCC or GND
I
or V
IHA
VIB = V
V
I/OA
IHB
= V
or V
CCA
ILA
ILB
or
A
Min. Typ. Max. Min. Max. Min. Max.
2.9 2.99 2.9 2.9
2.35 2.65 2.25 2.25
2.3 2.5 2.2 2.2
2.1 2.3 2.0 2.0
0.002 0.1 0.1 0.1
0.21 0.36 0.44 0.44
0.11 0.36 0.44 0.44
0.22 0.42 0.5 0.5
± 0.1 ± 1 ± 1 µA
± 0.5 ± 5 ± 5 µA
GND
CCA
or
55050µA
GND
V
IB
= V
CCB
or
GND
IA
V
= V
IB
= V
CCA
- 0.6V
CCB
or
0.35 0.5 0.5 mA
GND
-40 to 85 °C -55 to 125°C
Unit
V
V
V
V
3/10
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