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74LVCH32245ABFG8

P1-P3P4-P6P7-P7
INDUSTRIAL TEMPERATURE RANGE
IDT74LVCH32245A
3.3V CMOS 32-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS
1
FEBRUARY 2016INDUSTRIAL TEMPERATURE RANGE
IDT and the IDT logo are registered trademarks of Integrated Device Technology, Inc.
©2016 Integrated Device Technology, Inc. DSC-4767/5
FEATURES:
• Typical tSK(o) (Output Skew) < 250ps
• ESD > 2000V per MIL-STD-883, Method 3015; > 200V using
machine model (C = 200pF, R = 0)
•VCC = 3.3V ± 0.3V, Normal Range
•VCC = 2.7V to 3.6V, Extended Range
• CMOS power levels (0.4
μμ
μμ
μ W typ. static)
• All inputs, outputs, and I/O are 5V tolerant
• Supports hot insertion
• Available in 96-ball LFBGA package
FUNCTIONAL BLOCK DIAGRAM
DRIVE FEATURES:
• Balanced Output Drivers: ±24mA
• Reduced system switching noise
APPLICATIONS:
• 5V and 3.3V mixed voltage systems
• Data communication and telecommunication systems
IDT74LVCH32245A
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.
All pins can be driven from either 3.3V or 5V devices. This feature allows
the use of this device as a translator in a mixed 3.3V/5V supply system.
The LVCH32245A has been designed with a ±24mA output driver. This
driver is capable of driving a moderate to heavy load while maintaining
speed performance
The LVCH32245A has “bus-hold” which retains the inputs’ last state
whenever the input goes to a high impedance. This prevents floating inputs
and eliminates the need for pull-up/down resistors.
3.3V CMOS 32-BIT
BUS TRANSCEIVER
WITH 3-STATE OUTPUTS,
5 VOLT TOLERANT I/O, BUS-HOLD
1
DIR
1
A
1
1
B
1
1
OE
TO SEVEN OTHER CHANNNELS
3
DIR
3
A
1
3
B
1
3
OE
TO SEVEN OTHER CHANNNELS
2
DIR
2
A
1
2
B
1
2
OE
TO SEVEN OTHER CHANNNELS
4
DIR
4
A
1
4
B
1
4
OE
TO SEVEN OTHER CHANNNELS
A3
A5
H3
E5
A4
A2
H4
E2
J3
J5
J4
J2
T3
N5
T4
N2
INDUSTRIAL TEMPERATURE RANGE
2
IDT74LVCH32245A
3.3V CMOS 32-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS
TOP VIEW
1.5 mm Max.
1.4 mm Nom.
1.3 mm Min.
0.8mm
A B C D E F G H J K L M N P R T
A B C D E F G H J K L M N P R T
5.5mm
1
2
3
4
5
6
1
3
2
4
5
6
13.5mm
LFBGA
TOPVIEW
96 BALL LFBGA PACKAGE ATTRIBUTES
PIN CONFIGURATION
A
B
C
E
F
G
H
J
K
L
M
N
P
D
R
T
6
5
4
3
2
1
1
A6
1
A8
2
A1
2
A2
2
A4
2
A7
1
A4
1
A5
1
A7
2
A6
2
A8
2
A3
2
A5
1
A2
1
A3
1
A1
VCC
GND
3A8
3
A2
3
A4
4
A1
4
A3
4
A2
3
A3
3
A5
4
A4
3
A1
4
A6
VCC
1
B1
GND
GND
V
CC
1
B2
1
B3
4
B6
4
B7
GND
2B2
2
B4
1
B4
1
B5
1
B7
2B6
2
B8
3
B7
4
B2
3
B3
3
B5
4
B4
3
B1
1
B6
1
B8
2
B1
2
B7
2
B3
2
B5
3
B6
3
B8
3
B2
3
B4
4
B1
4
B3
GND
V
CC
GND
VCC
GND
GND
V
CC
GND
GND
GND
3A7
3
A6
GND
1OE
3OE
4A5
4
A7
4
A8
4
OE
4B8
4
B5
VCC
GND
2DIR
1DIR
VCC
GND
GND
GND
2OE
3DIR
4DIR
INDUSTRIAL TEMPERATURE RANGE
IDT74LVCH32245A
3.3V CMOS 32-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS
3
Pin Names Description
xOE Output Enable Input (Active LOW)
xDIR Direction Control Input
xAx Side A Inputs or 3-State Outputs
(1)
xBx Side B Inputs or 3-State Outputs
(1)
PIN DESCRIPTION
Symbol Description Max Unit
VTERM Terminal Voltage with Respect to GND –0.5 to +6.5 V
TSTG Storage Temperature –65 to +150 °C
IOUT DC Output Current –50 to +50 mA
I
IK Continuous Clamp Current, –50 mA
IOK VI < 0 or VO < 0
I
CC Continuous Current through each ±100 mA
ISS VCC or GND
ABSOLUTE MAXIMUM RATINGS
(1)
NOTE:
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.
NOTE:
1. These pins have "Bus-Hold". All other pins are standard inputs, outputs, or I/Os.
FUNCTION TABLE
(1)
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don’t Care
Z = High Impedance
Inputs
xOE xDIR Outputs
L L Bus B data to Bus A
L H Bus A data to Bus B
HX Z
NOTE:
1. As applicable to the device type.
Symbol Parameter
(1)
Conditions Typ. Max. Unit
CIN Input Capacitance VIN = 0V 4.5 6 pF
COUT Output Capacitance VOUT = 0V 6.5 8 pF
C
I/O I/O Port Capacitance VIN = 0V 6.5 8 pF
CAPACITANCE (TA = +25°C, F = 1.0MHz)
BUS-HOLD CHARACTERISTICS
Symbol Parameter
(1)
Test Conditions Min. Typ.
(2)
Max. Unit
IBHH Bus-Hold Input Sustain Current VCC = 3V VI = 2V – 75 — — μA
IBHL VI = 0.8V 75 — —
IBHH Bus-Hold Input Sustain Current VCC = 2.3V VI = 1.7V — — — μA
IBHL VI = 0.7V — — —
IBHHO Bus-Hold Input Overdrive Current VCC = 3.6V VI = 0 to 3.6V — — ±500 μA
IBHLO
NOTES:
1. Pins with Bus-Hold are identified in the pin description.
2. Typical values are at VCC = 3.3V, +25°C ambient.
P1-P3P4-P6P7-P7

74LVCH32245ABFG8

Mfr. #:
Buy 74LVCH32245ABFG8
Manufacturer:
IDT
Description:
Bus Transceivers 32-bit Bus Transceiver
Lifecycle:
New from this manufacturer.
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