SGS Thomson Microelectronics 74LVX4245M, 74LVX4245TTR, 74LVX4245MTR Datasheet

74LVX424 5
OCTAL DUAL SUPPLY BUS TRANSCEIVER
HIGH SPEED:
t
= 8.5 ns (MAX.) at
PD
V
=5.0V V
CCA
LOW POWER DISSIPATION:
I
= I
CCA
LOW NOISE: V
V
SYMMETRICAL OUTPUT IMPEDANCE:
|I
BALANCED PROPAGATION DELAYS:
t
PLH
OPERATING VOLTAGE R ANGE:
V V
CCB
=5.5V V
CCA
| = IOL = 24mA (MIN)
OH
t
PHL
(OPR) = 4.5V to 5.5V (1.2V Data Retention)
CCA
(OPR) = 2.7V to 3.6V (1.2V Data Retention)
CCB
= 3.3V
=5µA(MAX.) at TA=25°C
=0.3V (TYP.) at
OLP
=3.3V
CCB
PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 4245
IMPROVED LATCH-UP IMMUNITY
DESCRIPTION
The 74LVX4245 is a dual supply low voltage CMOS OCTAL BUS TRANSCEIVER fabricated with sub-micron silicon gate and double-layer metal wiring 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 74LVX4245M 74LVX4245MTR
TSSOP 74LVX4245TTR
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 5V bus, the B-port with the 3.3V 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
1/11July 2001
74LVX4245
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
2/11
74LVX4245
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
= 4.5 to 5.5V; V
CC
= 2.7 to 3.6V;
CCB
4.5 to 5.5 V
2.7 to 3.6 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)
4.5 3.3 2.0 2.0 2.0
5.5 3.3 2.0 2.0 2.0
4.5 3.3 0.8 0.8 0.8
5.5 3.3 0.8 0.8 0.8
4.5 3.0
4.5 3.0
4.5 3.0
4.5 3.0
5.5 3.6
5.5 3.6 VIA = V
5.5 3.6 VIA = V
5.5 3.6 V
)
CCA
Test Condition Value
T
= 25 °C
V
CCB
(V)
IO=-100 µA
=-24 mA
I
O
IO=100 µA
I
=24 mA
O
= VCC or GND
V
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.
4.4 4.5 4.4 4.4
3.86 3.76 3.76 0 0.1 0.1 0.1
0.36 0.44 0.44
± 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
- 2.1V
CCB
or
1.35 1.5 1.5 mA
GND
-40 to 85 °C -55 to 125°C
Unit
V
V
V
V
3/11
74LVX4245
DC SPECIFICATIONS FOR V
Symbol Parameter
V
V
V
I
High Level Input
IHB
Voltage
V
Low Level Input
ILB
Voltage High Level
OHB
Output Voltage
Low Level Output
OLB
Voltage
I
Input Leakage
IB
Current High Impedance
OZB
Output Leakage Current
I
I
Quiescent Supply
CCtB
Current
Maximum
CCtB
Quiescent Supply Current / Input
V
CCA
(V)
5.0 3.6 2.0 2.0 2.0
5.0 2.7 2.0 2.0 2.0
5.0 3.6 0.8 0.8 0.8
5.0 2.7 0.8 0.8 0.8
4.5 3.0
4.5 2.7
4.5 3.0
4.5 2.7
5.5 3.6
5.5 3.6 VIA = V
5.5 3.6 VIA = V
5.5 3.6 VIA = V
CCB
Test Condition Value
T
= 25 °C
V
CCB
(V)
IO=-100 µA
I
=-12 mA
O
I
O
=100 µA
I
O
I
O
I
O
= V
V
I
V
I/Ob
=-8 mA
=12 mA
=8 mA
or GND
CCA
or V
IHA
= V
CCb
ILA
or
A
Min. Typ. Max. Min. Max. Min. Max.
2.9 3.0 2.9 2.9
2.48 2.4 2.4
2.26 2.2 2.2
0.0 0.1 0.1 0.1
0.31 0.40 0.40
0.31 0.40 0.40
± 0.1 ± 1 ± 1 µA ± 0.5 ± 5 ± 5 µA
GND
CCA
or
5505µA
GND
V
IB
= V
CCB
or
GND
CCA
or
0.35 0.5 0.35 mA
GND
V
IB
= V
CCB
- 0.6V
-40 to 85 °C -55 to 125°C
Unit
V
V
V4.5 3.0
V4.5 3.0
4/11
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