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PDF IDT74LVCH32245A Data sheet ( Hoja de datos )
| Número de pieza | IDT74LVCH32245A | |
| Descripción | 3.3V CMOS 32-BIT BUS TRANSCEIVER | |
| Fabricantes | Integrated Device Technology | |
| Logotipo |  |
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IDT74LVCH32245A
3.3V CMOS 32-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS
INDUSTRIALTEMPERATURERANGE
3.3V CMOS 32-BIT
IDT74LVCH32245A
BUS TRANSCEIVER
WITH 3-STATE OUTPUTS,
5 VOLT TOLERANT I/O, BUS-HOLD
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 (0.4µ W typ. static)
www.Data•ShAeellt4inUp.cuotsm, outputs, and I/O are 5V tolerant
• Supports hot insertion
• Available in 96-ball LFBGA package
DRIVE FEATURES:
• Balanced Output Drivers: ±24mA
• Reduced system switching noise
APPLICATIONS:
• 5V and 3.3V mixed voltage systems
• Data communication and telecommunication systems
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.
FUNCTIONAL BLOCK DIAGRAM
1DIR A3
1A1 A5
A4
1OE
A2
1B1
3DIR J3
3A1 J5
J4
3OE
J2 3B1
TO SEVEN OTHER CHANNNELS
H3
2DIR
E5
2A1
TO SEVEN OTHER CHANNNELS
H4
2OE
E2 2B1
4DIR T3
4A1 N5
T4
4OE
N2
4B1
TO SEVEN OTHER CHANNNELS
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
©2000 Integrated Device Technology, Inc.
1
TO SEVEN OTHER CHANNNELS
FEBRUARY 2000
DSC-4767/1
1 page  
IDT74LVCH32245A
3.3V CMOS 32-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS
INDUSTRIALTEMPERATURERANGE
OPERATING CHARACTERISTICS, VCC = 3.3V ± 0.3V, TA = 25°C
Symbol
CPD
CPD
Parameter
Power Dissipation Capacitance per Transceiver Outputs enabled
Power Dissipation Capacitance per Transceiver Outputs disabled
Test Conditions
CL = 0pF, f = 10Mhz
Typical
76
8
Unit
pF
www.DataSheet4U.com
SWITCHING CHARACTERISTICS(1)
Symbol
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
tPZH
tPZL
tPHZ
tPLZ
tSK(o)
Parameter
Propagation Delay
xAx to xBx, xBx to xAx
Output Enable Time
xOE to xAx or xBx
Output Disable Time
xOE to xAx or xBx
Output Enable Time
xDIR to xAx or xBx
Output Disable Time
xDIR to xAx or xBx
Output Skew(2)
VCC = 2.7V
Min. Max.
1.5 4.7
1.5 6.7
1.5 7.1
1.5 7
1.5 7.4
——
NOTES:
1. See TEST CIRCUITS AND WAVEFORMS. TA = – 40°C to + 85°C.
2. Skew between any two outputs of the same package and switching in the same direction.
VCC = 3.3V ± 0.3V
Min. Max.
14
1.5 5.5
1.5 6.6
1.5 5.5
1.5 6.6
— 500
Unit
ns
ns
ns
ns
ns
ps
5
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| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet IDT74LVCH32245A.PDF ] | |
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