IDT74ALVCH32245
3.3V CMOS 32-BIT BUS TRANSCEIVER W/ 3-STATE OUTPUTS
EXTENDED COMMERCIAL TEMPERATURE RANGE
3.3V CMOS 32-BIT
BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
AND BUS-HOLD
FEATURES:
–
–
–
–
–
–
–
–
–
–
0.5 MICRON CMOS Technology
Typical t
SK
(o) (Output Skew) < 250ps
ESD > 2000V per MIL-STD-883, Method 3015;
> 200V using machine model (C = 200pF, R = 0)
0.8mm pitch LFBGA package, 96 balls
Extended commercial range of -40°C to +85°C
V
CC
= 3.3V ± 0.3V, Normal Range
V
CC
= 2.7V to 3.6V, Extended Range
V
CC
= 2.5V ± 0.2V
CMOS power levels (0.4µ W typ. static)
Rail-to-Rail output swing for increased noise margin
IDT74ALVCH32245
DESCRIPTION:
This 32-bit bus transceiver is built using advanced dual metal CMOS
technology. This high-speed, low power transceiver is ideal for asynchro-
nous communication between two busses (A and B). The Direction and
Output Enable controls are designed to operate the device as either four
independent 8-bit transceivers or one 32-bit transceiver. The direction
control pins (DIR) control the direction of data flow. The output enable pins
(OE) override the direction control and disable both ports. All inputs are
designed with hysteresis for improved noise margin.
The ALVCH32245 has been designed with a ±24mA output driver. This
driver is capable of driving a moderate to heavy load while maintaining
speed performance.
The ALVCH32245 has “bus-hold” which retains the inputs’ last state
whenever the input bus goes to a high impedance. This prevents floating
inputs and eliminates the need for pull-up/down resistors.
Drive Features for ALVCH32245:
– High Output Drivers: ±24mA
– Suitable for heavy loads
APPLICATIONS:
• 3.3V High Speed Systems
• 3.3V and lower voltage computing systems
FUNCTIONAL BLOCK DIAGRAM
A3
A4
J3
1
DIR
3
DIR
1
OE
J4
3
OE
3
A
1
J5
J2
1
A
1
A5
A2
1
B
1
3
B
1
TO SEVEN OTHER CHANNELS
TO SEVEN OTHER CHANNELS
2
DIR
H3
4
DIR
H4
T3
T4
2
OE
2
A
1
E5
E2
4
OE
4
A
1
N5
N2
2
B
1
4
B
1
TO SEVEN OTHER CHANNELS
TO SEVEN OTHER CHANNELS
EXTENDED COMMERCIAL TEMPERATURE RANGE
1
c
1999 Integrated Device Technology, Inc.
FEBRUARY 2000
DSC-4907/-
IDT74ALVCH32245
3.3V CMOS 32-BIT BUS TRANSCEIVER W/ 3-STATE OUTPUTS
EXTENDED COMMERCIAL TEMPERATURE RANGE
PIN CONFIGURATION
6
1
A
2
1
A
4
1
A
6
1
A
8
2
A
2
2
A
4
2
A
6
2
A
7
3
A
2
3
A
4
3
A
6
3
A
8
4
A
2
4
A
4
4
A
6
4
A
7
5
1
A
1
1
A
3
1
A
5
1
A
7
2
A
1
2
A
3
2
A
5
2
A
8
3
A
1
3
A
3
3
A
5
3
A
7
4
A
1
4
A
3
4
A
5
4
A
8
4
1
OE
GN D
V
CC
GN D
GN D
V
CC
GN D
2
OE
3
OE
GN D
V
CC
GN D
GN D
V
CC
GN D
4
OE
3
1
DIR
GN D
V
CC
GN D
GN D
V
CC
GN D
2
DIR
3
DIR
GN D
V
CC
GN D
GN D
V
CC
GN D
4
DIR
2
1
B
1
1
B
3
1
B
5
1
B
7
2
B
1
2
B
3
2
B
5
2
B
8
3
B
1
3
B
3
3
B
5
3
B
7
4
B
1
4
B
3
4
B
5
4
B
8
1
1
B
2
A
1
B
4
B
1
B
6
C
1
B
8
D
2
B
2
E
2
B
4
F
2
B
6
G
2
B
7
H
3
B
2
J
3
B
4
K
3
B
6
L
3
B
8
M
4
B
2
N
4
B
4
P
4
B
6
R
4
B
7
T
32245
LFBGA
TOPVIEW
96 BALL LFBGA PACKAGE ATTRIBUTES
1.5 m m M a x.
1.4m m N o m .
1.3 m m M in .
0.8 m m
6
5
4
3
2
1
A
B
C
D
E
F
G
H
J
K
L
M
N
P
R
T
TO P VIEW
A
1
2
3
B
C
D
E
F
G
H
J
K
L
M
N
P
R
T
5.5 m m
4
5
6
13 .5m m
2
IDT74ALVCH32245
3.3V CMOS 32-BIT BUS TRANSCEIVER W/ 3-STATE OUTPUTS
EXTENDED COMMERCIAL TEMPERATURE RANGE
ABSOLUTE MAXIMUM RATING
Symbol
V
TERM(2)
V
TERM(3)
T
STG
I
OUT
I
IK
I
OK
I
CC
I
SS
Description
Terminal Voltage
with Respect to GND
Terminal Voltage
with Respect to GND
Storage Temperature
DC Output Current
Continuous Clamp Current,
V
I
< 0 or V
I
>
V
CC
Continuous Clamp Current, V
O
< 0
Continuous Current through
each V
CC
or GND
(1)
Unit
V
V
°C
mA
mA
mA
mA
NEW16link
CAPACITANCE
(T
A
= +25
o
C, f = 1.0MHz)
Symbol
C
IN
C
OUT
C
I/O
Parameter
(1)
Input Capacitance
Output
Capacitance
I/O Port
Capacitance
Conditions
V
IN
= 0V
V
OUT
= 0V
V
IN
= 0V
Typ.
5
7
7
Max.
7
9
9
Unit
pF
pF
pF
NEW16link
Max.
– 0.5 to + 4.6
– 0.5 to
V
CC
+ 0.5
– 65 to + 150
– 50 to + 50
± 50
– 50
±100
NOTE:
1. As applicable to the device type.
NOTES:
1. Stresses greater than those listed under ABSOLUTE MAXIMUM
RATINGS may cause permanent damage to the device. This is a
stress rating only and functional operation of the device at these or
any other conditions above those indicated in the operational sections
of this specification is not implied. Exposure to absolute maximum
rating conditions for extended periods may affect reliability.
2. V
CC
terminals.
3. All terminals except V
CC
.
FUNCTION TABLE
(each 8-bit section)
(1)
Inputs
PIN DESCRIPTION
Pin Names
xOE
xDIR
xAx
xBx
Description
Output Enable Inputs (Active LOW)
Direction Control Inputs
Side A Inputs or 3-State Outputs
(1)
Side B Inputs or 3-State Outputs
(1)
xOE
L
L
H
xDIR
L
H
X
Outputs
Bus B Data to Bus A
Bus A Data to Bus B
High Z State
NOTE:
1. These pins have “Bus-Hold.” All other pins are standard inputs,
outputs, or I/Os.
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don’t Care
Z = High-Impedance
c 1998 Integrated Device Technology, Inc.
3
DSC-123456
IDT74ALVCH32245
3.3V CMOS 32-BIT BUS TRANSCEIVER W/ 3-STATE OUTPUTS
EXTENDED COMMERCIAL TEMPERATURE RANGE
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Operating Condition: TA = – 40°C to +85°C
Symbol
V
IH
V
IL
I
IH
I
IL
I
OZH
I
OZL
V
IK
V
H
I
CCL
I
CCH
I
CCZ
∆I
CC
Parameter
Input HIGH Voltage Level
Input LOW Voltage Level
Input HIGH Current
Input LOW Current
High Impedance Output Current
(3-State Output pins)
Clamp Diode Voltage
Input Hysteresis
Quiescent Power Supply Current
Quiescent Power Supply
Current Variation
V
CC
= 2.3V, I
IN
= – 18mA
V
CC
= 3.3V
V
CC
= 3.6V
V
IN
= GND or V
CC
One input at V
CC
−
0.6V,
other inputs at V
CC
or GND
Test Conditions
V
CC
= 2.3V to 2.7V
V
CC
= 2.7V to 3.6V
V
CC
= 2.3V to 2.7V
V
CC
= 2.7V to 3.6V
V
CC
= 3.6V
V
CC
= 3.6V
V
CC
= 3.6V
V
I
= V
CC
V
I
= GND
V
O
= V
CC
V
O
= GND
Min.
1.7
2
—
—
—
—
—
—
—
—
—
Typ.
(1)
—
—
—
—
—
—
—
—
– 0.7
100
0.1
Max.
—
—
0.7
0.8
±5
±5
± 10
± 10
– 1.2
—
40
µA
µA
V
mV
µA
µA
V
Unit
V
—
—
750
µA
NEW16link
NOTE:
1. Typical values are at V
CC
= 3.3V, +25°C ambient.
BUS-HOLD CHARACTERISTICS
Symbol
I
BHH
I
BHL
I
BHH
I
BHL
I
BHHO
I
BHLO
NEW16link
Parameter
(1)
Bus-Hold Input Sustain Current
Bus-Hold Input Sustain Current
Bus-Hold Input Overdrive Current
V
CC
= 3.0V
V
CC
= 2.3V
V
CC
= 3.6V
Test Conditions
V
I
= 2.0V
V
I
= 0.8V
V
I
= 1.7V
V
I
= 0.7V
V
I
= 0 to 3.6V
Min.
– 75
75
– 45
45
—
Typ.
(2)
—
—
—
—
—
Max.
—
—
—
—
± 500
Unit
µA
µA
µA
NOTES:
1. Pins with Bus-hold are identified in the pin description.
2. Typical values are at V
CC
= 3.3V, +25°C ambient.
4
IDT74ALVCH32245
3.3V CMOS 32-BIT BUS TRANSCEIVER W/ 3-STATE OUTPUTS
EXTENDED COMMERCIAL TEMPERATURE RANGE
OUTPUT DRIVE CHARACTERISTICS
Symbol
V
OH
Parameter
Output HIGH Voltage
V
CC
Test Conditions
(1)
= 2.3V to 3.6V
I
OH
= – 0.1mA
I
OH
= – 6mA
I
OH
= – 12mA
Min.
V
CC
– 0.2
2
1.7
2.2
2.4
I
OH
= – 24mA
I
OL
= 0.1mA
I
OL
= 6mA
I
OL
= 12mA
V
CC
= 2.7V
V
CC
= 3.0V
I
OL
= 12mA
I
OL
= 24mA
2
—
—
—
—
—
Max.
—
—
—
—
—
—
0.2
0.4
0.7
0.4
0.55
NEW16link
Unit
V
V
CC
= 2.3V
V
CC
= 2.3V
V
CC
= 2.7V
V
CC
= 3.0V
V
CC
= 3.0V
V
OL
Output LOW Voltage
V
CC
= 2.3V to 3.6V
V
CC
= 2.3V
V
NOTE:
1. V
IH
and V
IL
must be within the min. or max. range shown in the DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE table for the
appropriate V
CC
range. T
A
= – 40°C to + 85°C.
OPERATING CHARACTERISTICS, T
A
= 25
o
C
V
CC
= 2.5V ± 0.2V
Symbol
C
PD
C
PD
Parameter
Power Dissipation Capacitance
Outputs enabled
Power Dissipation Capacitance
Outputs disabled
Test Conditions
C
L
= 0pF, f = 10Mhz
Typical
44
8
V
CC
= 3.3V ± 0.3V
Typical
58
10
Unit
pF
pF
SWITCHING CHARACTERISTICS
(1)
V
CC
= 2.5V ± 0.2V
Symbol
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
SK
(o)
Parameter
Propagation Delay
xAx to xBx or xBx to xAx
Output Enable Time
xOE to xAx or xBx
Output Disable Time
xOE to xAx or xBx
Output Skew
(2)
Min.
1
1
1
—
Max.
3.7
5.7
5.2
—
Min.
—
—
—
—
V
CC
= 2.7V
Max.
3.6
5.4
4.6
—
V
CC
= 3.3V ± 0.3V
Min.
1
1
1
—
Max.
3
4.4
4.1
500
Unit
ns
ns
ns
ps
NOTES:
1. See test circuits and waveforms. T
A
= – 40°C to + 85°C.
2. Skew between any two outputs of the same package and switching in the same direction.
5
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