SGS Thomson Microelectronics 74LVC245ATTR, 74LVC245AMTR, 74LVC245AM Datasheet
1/9February 2002
■ 5V TOLERANT INPUTS
■ HIGH SPEED: t
PD
= 6.3ns (MAX.) at VCC = 3V
■ POWER DOWN PROTECTION ON INPU T S
AND OUTPUTS
■ SYMMETRICAL OUTPUT IMPEDANCE:
|I
OH
| = IOL = 24mA (MIN) at VCC = 3V
■ PCI BUS LEVELS GUARANT EED AT 2 4 mA
■ BALANCED PROPAGATION DELAYS:
t
PLH
≅ t
PHL
■
OPERATING VOLTAGE RANGE:
V
CC
(OPR) = 1.65V to 3.6V (1.2V Data
Retention)
■ PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 245
■ LATCH-UP PERFORMANCE EXCEEDS
500mA (JESD 17)
■ ESD PERFORMANCE:
HBM > 2000V (MIL STD 883 method 3015);
MM > 200V
DESCRIPTION
The 74LVC245A is a lo w voltage CMOS OCTAL
BUS TRANSCEIVER (3-STATE) fabricated with
sub-micron silicon gate and double-layer metal
wiring C
2
MOS technology. It is ideal for 1.65 to 3.6
V
CC
operations and low power and low noise
applications.
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.
It has more speed performance at 3.3V than 5V
AC/ACT family, combined with a lower power
consumption.
All inputs are equipped with protection circuits
against static discharge, giving them 2KV ESD
immunity and transient excess voltage.
All floating bus terminals during High Z State must
be held HIGH or LOW.
74LVC245A
LOW VOLTAGE CMOS OCTAL BUS TRANSCEIVER
(NOT INVERTED) HIGH PERFORMANCE
.
PIN CONNECTION AND IEC LOGIC SYMBOLS
ORDER CODES
PACKAGE TUBE T & R
SOP 74LVC245AM 74LVC245AMTR
TSSOP 74LVC245ATTR
TSSOPSOP
74LVC245A
2/9
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION TRUTH TABLE
X : Don’t Care
Z : High Impedance
ABSOLUTE MAXIMUM RATINGS
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied
1) I
O
absolute ma xim um rating must be obse rved
2) V
O
< GND
PIN No SYMBOL NAME AND FUNCTION
1 DIR Directional Control
2, 3, 4, 5, 6,
7, 8, 9
A1 to A8 Data Inputs/Outputs
18, 17, 16,
15, 14, 13,
12, 11
B1 to B8 Data Inputs/Outputs
19 G
Output Enable Input
10 GND Ground (0V)
20 V
CC
Positive Supply Voltage
INPUTS FUNCTION OUTPUT
G
DIR A BUS B BUS Yn
L L OUTPUT INPUT A = B
L H INPUT OUTPUT B = A
HXZZZ
Symbol Parameter Value Unit
V
CC
Supply Voltage
-0.5 to +7.0 V
V
I
DC Input Voltage
-0.5 to +7.0 V
V
O
DC Output Voltage (High Impedance or VCC = 0V)
-0.5 to +7.0 V
V
O
DC Output Voltage (High or Low State) (note 1) -0.5 to VCC + 0.5
V
I
IK
DC Input Diode Current
- 50 mA
I
OK
DC Output Diode Current (note 2)
- 50 mA
I
O
DC Output Current
± 50 mA
I
CC
or I
GND
DC VCC or Ground Current per Supply Pin
± 100 mA
T
stg
Storage Temperature
-65 to +150 °C
T
L
Lead Temperature (10 sec)
300 °C
74LVC245A
3/9
RECOMMENDED OPERATING CONDITIONS
1) Truth T abl e guarante ed: 1.2V to 3.6 V
2) V
IN
from 0.8V to 2V at VCC = 3.0V
DC SPECIFICATIONS
Symbol Parameter Value Unit
V
CC
Supply Voltage (note 1)
1.65 to 3.6 V
V
I
Input Voltage
0 to 5.5 V
V
O
Output Voltage (High Impedance or VCC = 0V)
0 to 5.5 V
V
O
Output Voltage (High or Low State) 0 to V
CC
V
I
OH
, I
OL
High or Low Level Output Current (VCC = 3.0 to 3.6V)
± 24 mA
I
OH
, I
OL
High or Low Level Output Current (VCC = 2.7 to 3.0V)
± 12 mA
I
OH
, I
OL
High or Low Level Output Current (VCC = 2.3 to 2.7V)
± 8mA
I
OH
, I
OL
High or Low Level Output Current (VCC = 1.65 to 2.3V)
± 4mA
T
op
Operating Temperature
-55 to 125 °C
dt/dv Input Rise and Fall Time (note 2) 0 to 10 ns/V
Symbol Parameter
Test Condition Value
Unit
V
CC
(V)
-40 to 85 °C -55 to 125 °C
Min. Max. Min. Max.
V
IH
High Level Input
Voltage
1.65 to 1.95
0.65V
CC
0.65V
CC
V
2.3 to 2.7 1.7 1.7
2.7 to 3.6 2 2
V
IL
Low Level Input
Voltage
1.65 to 1.95
0.35V
CC
0.35V
CC
V
2.3 to 2.7 0.7 0.7
2.7 to 3.6 0.8 0.8
V
OH
High Level Output
Voltage
1.65 to 3.6
IO=-100 µAVCC-0.2 VCC-0.2
V
1.65
I
O
=-4 mA
1.2 1.2
2.3
I
O
=-8 mA
1.7 1.7
2.7
I
O
=-12 mA
2.2 2.2
3.0
I
O
=-18 mA
2.4 2.4
3.0
I
O
=-24 mA
2.2 2.2
V
OL
Low Level Output
Voltage
1.65 to 3.6
I
O
=100 µA
0.2 0.2
V
1.65
I
O
=4 mA
0.45 0.45
2.3
I
O
=8 mA
0.7 0.7
2.7
I
O
=12 mA
0.4 0.4
3.0
I
O
=24 mA
0.55 0.55
I
I
Input Leakage
Current
3.6
V
I
= 0 to 5.5V
± 5 ± 5 µA
I
off
Power Off Leakage
Current
0
V
I
or VO = 5.5V
10 10 µA
I
OZ
High Impedance
Output Leakage
Current
3.6 VI = VIH orVIL
V
O
= 0 to 5.5V
± 10 ± 10 µA
I
CC
Quiescent Supply
Current
3.6
VI = VCC or GND
10 10
µA
V
I
or VO = 3.6 to
5.5V
± 10 ± 10
∆I
CC
ICC incr. per Input
2.7 to 3.6
VIH = VCC-0.6V
500 500 µA
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