SGS Thomson Microelectronics 74ALVCH32245LBR, 74ALVCH32245LB Datasheet
74ALVCH32245
LOW VOLTAGE CMOS 32-BIT BUS TRANSCEIVER
(3-STATE) WIT H 3.6V TOLERANTAT INPUTS AND OUTPUTS
■ 3.6V TOLERANT INPUTS AND OUTPUTS
■ HIGH SPEED:
= 3.0ns (MAX.) at VCC = 3.0 to 3.6V
t
PD
t
= 3.7ns (MAX.) at VCC = 2.3 to 2.7V
PD
■ POWER DOWN PROTECTION ON INPUT S
AND OUTPUTS
■ SYMMETRICAL OUTPUT IMPEDANCE:
|I
| = IOL = 24mA (MIN) at VCC = 3V
OH
| = IOL = 8mA (MIN) at VCC = 2.3V
|I
OH
■ OPERATING VOLTAGE RANGE:
V
(OPR) = 1.65V to 3.6V
CC
■ PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 32245
■ BUS HOLD PROVIDED ON BOTH SIDE
■ LATCH-UP PERFORMANCE EXCEEDS
300mA
■ ESD PERFORMANCE:
HBM > 2000V (MIL STD 883 method 3015);
MM > 200V
DESCRIPTION
The 74ALVCH32245 is a low voltage CMOS
32-BIT BUS TRANSCEIVER (3-STATE)
fabricated with sub-micron silicon gate and
five-layer metal wiring C
2
MOS technology. It is
ideal for 1.65 to 3.6 V applications; it can be
interfaced to 3.6V signal enviroment for both
inputs and outputs.
LFBGA96
(Top and Bottom view)
ORDER CODES
PACKAGE TRAY T & R
LFBGA96 74ALVCH32245LB 74ALVCH32245LBR
This IC is intended for two-ways asynchronous
communication between data buses: the direction
of data trasmission is determined by DIR input.
Any nG
TRANSCEIVE RS. Output Enable input (nG
together gives full 32-bit operation. When nG
LOW, the output are en abled. W hen nG
contol output governs eight BUS
) tied
is
is HIGH,
the output are in high impedance state so that the
buses are effectively isolated. Bus hold on data
inputs is provided in order to eliminate the need for
external pull-up or pull-down resistor.
All inputs and outputs are equipped with
protection circuits against stat ic discharge, giving
them 2KV ESD immunity and transient excess
voltage.
LOGIC DIAGRAM
1/9February 2002
74ALVCH32245
PIN CONNECTION (Top view)
TERMINAL ASSIGNMENT
ABCDEFGHJKLMNPRT
61A2 1A4 1A6 1A 8 2A2 2A4 2A6 2A7 3A2 3A4 3A6 3A8 4A2 4A4 4A6 4A 7
5 1A1 1 A3 1A5 1A7 2A1 2A3 2A5 2A8 3A1 3A3 3A5 3A7 4A1 4A3 4A5 4A 8
4 1G
3 1DIR G ND
GND
V
CC
V
CC
GND GND
GND GND
2 1B1 1 B3 1B5 1B7 2B1 2B3 2B5 2B8 3B1 3B3 3B5 3B7 4B1 4B3 4B5 4B 8
V
GND 2G 3G GND
CC
V
GND 2DIR 3DIR G ND
CC
V
CC
V
CC
GND GND
GND GND
V
CC
V
CC
GND 4G
GND 4DI R
1 1B2 1 B4 1B6 1B8 2B2 2B4 2B6 2B7 3B2 3B4 3B6 3B8 4B2 4B4 4B6 4B 7
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION TRUTH TABLE
SYMBOL NAME AND FUNCTION
nDIR Directional Control
nA1 to nA8 Data Inputs/Outputs
nB1 to nB8 Data Inputs/Outputs
nG
Output Enable Inputs
GND Ground (0V)
V
CC
Positive Supply Voltage
2/9
INPUTS FUNCTION OUTPUT
nG
nDIR A BUS B BUS Yn
L L OUTPUT INPUT A = B
L H INPUT OUTPUT B = A
HXZZZ
X : Don‘t Ca re
Z : High Impedance
74ALVCH32245
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
V
V
V
V
I
I
OK
I
I
or I
CC
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
1) I
absolute ma xim um rating must be obse rved
O
< GND
2) V
O
RECOMMENDED OPERATING CONDITIONS
Supply Voltage
CC
DC Input Voltage
I
DC Output Voltage (VCC = 0V)
O
DC Output Voltage (High or Low State) (note 1) -0.5 to VCC + 0.5
O
DC Input Diode Current
IK
DC Output Diode Current (note 2)
DC Output Current
O
DC VCC or Ground Current per Supply Pin
GND
Power Dissipation
D
Storage Temperature
stg
Lead Temperature (10 sec)
L
-0.5 to +4.6 V
-0.5 to +4.6 V
-0.5 to +4.6 V
V
- 50 mA
- 50 mA
± 50 mA
± 100 mA
400 mW
-65 to +150 °C
300 °C
Symbol Parameter Value Unit
V
V
V
V
I
OH
I
OH
I
OH
T
Supply Voltage (note 1)
CC
Input Voltage
I
Output Voltage (VCC = 0V)
O
Output Voltage (High or Low State) 0 to V
O
, I
High or Low Level Output Current (VCC = 3.0 to 3.6V)
OL
, I
High or Low Level Output Current (VCC =2.7V)
OL
, I
High or Low Level Output Current (VCC = 2.3 to 2.5V)
OL
Operating Temperature
op
1.65 to 3.6 V
0 to 3.6 V
0 to 3.6 V
CC
± 24 mA
± 12 mA
± 8mA
-40 to +85 °C
dt/dv Input Rise and Fall Time (note 2) 0 to 10 ns/V
1) Truth T abl e guarante ed: 1.2V to 3.6 V
from 0.8V to 2V at VCC = 3.0V
2) V
IN
V
3/9
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