IDT74ALVCH245 查看數據表（PDF） - Integrated Device Technology
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IDT74ALVCH245
Integrated Device Technology
IDT74ALVCH245 Datasheet PDF : 6 Pages
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IDT74ALVCH245
3.3V CMOS OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS
3.3V CMOS OCTAL
BUS TRANSCEIVER WITH
3-STATE OUTPUTS
AND BUS-HOLD
INDUSTRIAL TEMPERATURE RANGE
IDT74ALVCH245
FEATURES:
• 0.5 MICRON CMOS Technology
• 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
• VCC = 2.5V ± 0.2V
• CMOS power levels (0.4µ W typ. static)
• Rail-to-Rail output swing for increased noise margin
• Available in QSOP, SOIC, SSOP, and TSSOP packages
DRIVE FEATURES:
• High Output Drivers: ±24mA
• Suitable for Heavy Loads
DESCRIPTION:
This octal bus transceiver is built using advanced dual metal CMOS
technology. The three-state controls are designed to operate this device
in a single-byte mode. All inputs are designed with hysteresis for improved
noise margin.
The ALVCH245 is designed for asynchronous communication between
data buses. The device transmits data from the A bus to the B bus or from
the B bus to the A bus, depending on the logic level at the direction-control
(DIR) input.
The ALVCH245 has been designed with a ±24mA output driver. This
driver is capable of driving a moderate to heavy load while maintaining
speed performance.
The ALVCH245 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
DIR 1
19
OE
A1 2
18 B1
TO SEVEN OTHER CHANNELS
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
1
©2000 Integrated Device Technology, Inc.
SEPTEMBER 2000
DSC-4471/2
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