SGS Thomson Microelectronics 74LVXC3245TTR, 74LVXC3245MTR, 74LVXC3245M Datasheet
1/12July 2001
■ HIGH SPEED :
t
PD
= 8ns (MAX.) at TA=25°C
V
CCA
= 3.3V, V
CCB
= 5.0V
■ LOW POWER DISSIPATION:
I
CCA
= I
CCB
= 5µA(MAX.) at TA=25°C
■ LOW NOISE: V
OLP
=0.3V (TYP.) at
V
CCA
=3.3V
■ SYMMETRICAL OUTPUT IMPEDANCE:
|I
OH
| = IOL = 24mA (MIN)
■ BALANCED PROPAGATION DELAYS:
t
PLH
≅ t
PHL
■ OPERATING VOLTAGE R ANGE:
V
CCA
(OPR) = 2.7V to 3.6V (1.2V Data Retention)
V
CCB
(OPR) = 2.7V to 5.5V (1.2V Data Retention)
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES C3245
■ IMPROVED LATCH-UP IMMUNITY
DESCRIPTION
The 74LVXC3245 is a dual supply 8 bit
configurable 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 3.3V bus and a 3.3V to 5V bus in a
mixed 3.3V/5V supply systems, it achieves high
speed operation while m aintaini ng the CMOS low
power dissipation.
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.
74LVXC3245
OCTAL DUAL SUPPLY BUS TRANSCEIVER
PIN CONNECTION AND IEC LOGIC SYMBOLS
ORDER CODES
PACKAGE TUBE T & R
SOP 74LVXC3245M 74LVXC3245MTR
TSSOP 74LVXC3245TTR
TSSOPSOP
74LVXC3245
2/12
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
PIN No SYMBOL NAME AND FUNCTION
2 DIR Directional Control
3, 4, 5, 6, 7,
8, 9, 10
A1 to A8 Data Inputs/Outputs
21, 20, 19,
18, 17, 16,
15, 14
B1 to B8 Data Inputs/Outputs
22 G
Output Enable Input
11, 12, 13 GND Ground (0V)
23 NC Not Connected
1V
CCA
Positive Supply Voltage
24 V
CCB
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
Symbol Parameter Value Unit
V
CCA
Supply Voltage
-0.5 to +7.0 V
V
CCB
Supply Voltage
-0.5 to +7.0 V
V
I
DC Input Voltage -0.5 to V
CCA
+ 0.5
V
V
I/OA
DC I/O Voltage -0.5 to V
CCA
+ 0.5
V
V
I/OB
DC I/O Voltage -0.5 to V
CCB
+ 0.5
V
I
IK
DC Input Diode Current
± 20 mA
I
OK
DC Output Diode Current
± 50 mA
I
OA
DC Output Current
± 50 mA
I
OB
DC Output Current
± 50 mA
I
CCA
DC VCC or Ground Current
± 200 mA
I
CCB
DC VCC or Ground Current
± 100 mA
P
d
Power Dissipation
180 mW
T
stg
Storage Temperature
-65 to +150 °C
T
L
Lead Temperature (10 sec)
300 °C
74LVXC3245
3/12
RECOMMENDED OPERATING CONDITIONS
1) VIN from 30 % to 70% of V
CC
2) V
CCA
= 2.7 to 3.6V; V
CCB
= 2.7 to 5.5V;
Symbol Parameter Value Unit
V
CCA
Supply Voltage (note 1)
2.7 to 3.6 V
V
CCB
Supply Voltage (note 1)
2.7 to 5.5 V
V
I
Input Voltage 0 to V
CCA
V
V
I/OA
I/O Voltage 0 to V
CCA
V
V
I/OB
I/O Voltage 0 to V
CCB
V
T
op
Operating Temperature
-55 to 125 °C
dt/dv Input Rise and Fall Time (note 2) 0 to 10 ns/V
74LVXC3245
4/12
DC SPECIFICATIONS FOR V
CCA
Symbol Parameter
Test Condition Value
Unit
V
CCA
(V)
V
CCB
(V)
T
A
= 25 °C
-40 to 85 °C -55 to 125°C
Min. Typ. Max. Min. Max. Min. Max.
V
IHA
High Level Input
Voltage
2.7 3.0 2.0 2.0 2.0
V3.0 3.6 2.0 2.0 2.0
3.6 5.5 2.0 2.0 2.0
V
ILA
Low Level Input
Voltage
2.7 3.0 0.8 0.8 0.8
V3.0 3.6 0.8 0.8 0.8
3.6 5.5 0.8 0.8 0.8
V
OHA
High Level
Output Voltage
3.0 3.0
IO=-100 µA
2.9 2.99 2.9 2.9
V
3.0 3.0
I
O
=-12 mA
2.56 2.85 2.46 2.46
3.0 3.0
I
O
=-24 mA
2.35 2.65 2.25 2.25
2.7 3.0
I
O
=-12 mA
2.3 2.5 2.2 2.2
2.7 4.5
I
O
=-24 mA
2.1 2.3 2.0 2.0
V
OLA
Low Level Output
Voltage
3.0 3.0
IO=100 µA
0.0 0.1 0.1 0.1
V
3.0 3.0
I
O
=24 mA
0.21 0.36 0.44 0.44
2.7 3.0
I
O
=12 mA
0.11 0.36 0.44 0.44
2.7 4.5
I
O
=24 mA
0.22 0.42 0.5 0.5
I
IA
Input Leakage
Current
3.6 5.5
V
I
= VCC or GND
± 0.1 ± 1 ± 1 µA
I
OZA
High Impedance
Output Leakage
Current
3.6 5.5 VIA = V
IHA
or V
ILA
VIB = V
IHB
or V
ILB
V
I/OA
= V
CCA
or
GND
± 0.5 ± 5 ± 5 µA
I
CCtA
Quiescent Supply
Current
3.6 5.5 VIA = V
CCA
or
GND
V
IB
= V
CCB
or
GND
55050µA
I
CCtAF
Quiescent V
CCA
Supply Current
as B Port Floats
3.6 Open VIA = V
CCA
or
GND G
= DIR =
V
CCA
VIB = Open
55050µA
∆I
CCtA
Maximum
Quiescent Supply
Current / Input
(An, DIR, G
)
3.6 5.5 V
IA
= V
CCA
- 0.6V
V
IB
= V
CCB
or
GND
0.35 0.5 0.5 mA
Loading...