IDT74ALVCH32245
3.3V CMOS 32-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
3.3V CMOS 32-BIT
BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
AND BUS-HOLD
• 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)
• 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)
μ
• Rail-to-Rail output swing for increased noise margin
• Available in 96-ball LFBGA package
IDT74ALVCH32245
FEATURES:
DESCRIPTION:
DRIVE FEATURES:
• High Output Drivers: ±24mA
• Suitable for Heavy Loads
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.
APPLICATIONS:
• 3.3V high speed systems
• 3.3V and lower voltage computing systems
FUNCTIONAL BLOCK DIAGRAM
1
DIR
A3
A4
3
DIR
1
OE
J3
J4
3
OE
1
A
1
A5
A2
3
A
1
1
B
1
J5
J2
3
B
1
TO SEVEN OTHER CHANNELS
TO SEVEN OTHER CHANNELS
2
DIR
H3
H4
4
DIR
2
OE
T3
T4
4
OE
4
A
1
N5
N2
2
A
1
E5
E2
2
B
1
4
B
1
TO SEVEN OTHER CHANNELS
IDT and the IDT logo are registered trademarks of Integrated Device Technology, Inc.
TO SEVEN OTHER CHANNELS
INDUSTRIAL TEMPERATURE RANGE
1
©2016 Integrated Device Technology, Inc.
JUNE 2016
DSC-4907/7
IDT74ALVCH32245
3.3V CMOS 32-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS
INDUSTRIAL 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
GND
GND
1
B
3
V
CC
V
CC
GND
GND
V
CC
V
CC
GND
GND
2
OE
3
OE
GND
GND
3
B
3
V
CC
V
CC
3
B
5
GND
GND
3
B
7
GND
GND
4
B
1
V
CC
V
CC
4
B
3
GND
GND
4
B
5
4
OE
3 1
DIR
GND
1
B
7
GND
2
B
1
2
DIR
3
DIR
4
DIR
2
1
B
1
1
B
5
2
B
3
2
B
5
2
B
8
3
B
1
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
LFBGA
TOPVIEW
96 BALL LFBGA PACKAGE ATTRIBUTES
1.5mm Max.
1.4mm Nom.
1.3mm Min.
0.8mm
6
5
4
3
2
1
A
B
C
D
E
F
G
H
J
K
L
M
N
P
R
T
TOP VIEW
A
1
2
3
B
C
D
E
F
G
H
J
K
L
M
N
P
R
T
5.5mm
4
5
6
13.5mm
2
IDT74ALVCH32245
3.3V CMOS 32-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
ABSOLUTE MAXIMUM RATINGS
(1)
Symbol
Description
Max
V
TERM
(2)
T
STG
I
OUT
I
IK
I
OK
I
CC
I
SS
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
–0.5 to +4.6
–0.5 to V
CC
+0.5
–65 to +150
–50 to +50
±50
–50
±100
V
TERM
(3)
Terminal Voltage with Respect to GND
Unit
V
V
°C
mA
mA
mA
mA
CAPACITANCE
(T
A
= +25°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
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
.
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)
FUNCTION TABLE
(EACH 8-BIT SECTION)
(1)
Inputs
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
3
IDT74ALVCH32245
3.3V CMOS 32-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Operating Condition: T
A
= –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
ΔI
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
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
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
Test Conditions
Min.
1.7
2
—
—
—
—
—
—
—
—
—
Typ.
(1)
—
—
—
—
—
—
—
—
–0.7
100
0.1
Max.
—
—
0.7
0.8
±5
±5
±10
±10
–1.2
—
40
V
mV
μA
μA
μA
μA
V
Unit
V
Quiescent Power Supply Current
Variation
—
—
750
μA
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
NOTES:
1. Pins with Bus-Hold are identified in the pin description.
2. Typical values are at V
CC
= 3.3V, +25°C ambient.
Parameter
(1)
Bus-Hold Input Sustain Current
Bus-Hold Input Sustain Current
Bus-Hold Input Overdrive Current
V
CC
= 3V
V
CC
= 2.3V
V
CC
= 3.6V
Test Conditions
V
I
= 2V
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
4
IDT74ALVCH32245
3.3V CMOS 32-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
OUTPUT DRIVE CHARACTERISTICS
Symbol
V
OH
Parameter
Output HIGH Voltage
V
CC
= 2.3V
V
CC
= 2.3V
V
CC
= 2.7V
V
CC
= 3V
V
CC
= 3V
V
OL
Output LOW Voltage
V
CC
= 2.3V to 3.6V
V
CC
= 2.3V
V
CC
= 2.7V
V
CC
= 3V
I
OH
= – 24mA
I
OL
= 0.1mA
I
OL
= 6mA
I
OL
= 12mA
I
OL
= 12mA
I
OL
= 24mA
Test Conditions
(1)
V
CC
= 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
2
—
—
—
—
—
Max.
—
—
—
—
—
—
0.2
0.4
0.7
0.4
0.55
V
Unit
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°C
V
CC
= 2.5V ± 0.2V
Symbol
C
PD
C
PD
Parameter
Power Dissipation Capacitance per Driver Outputs enabled
Power Dissipation Capacitance per Driver Outputs disabled
Test Conditions
C
L
= 0pF, f = 10Mhz
Typical
44
8
V
CC
= 3.3V ± 0.3V
Typical
58
10
Unit
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 to xBx
Output Disable Time
xOE
to xAx to xBx
Output Skew
(2)
—
—
—
—
—
500
ps
1
5.2
—
4.6
1
4.1
ns
1
5.7
—
5.4
1
4.4
ns
Min.
1
Max.
3.7
V
CC
= 2.7V
Min.
—
Max.
3.6
V
CC
= 3.3V ± 0.3V
Min.
1
Max.
3
Unit
ns
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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