IDT74ALVCHR162245
3.3V CMOS 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
3.3V CMOS 16-BIT
BUS TRANSCIEVER
WITH 3-STATE OUTPUTS
AND BUS-HOLD
鈥?0.5 MICRON CMOS Technology
鈥?Typical t
SK(o)
(Output Skew) < 250ps
鈥?ESD > 2000V per MIL-STD-883, Method 3015; > 200V using
machine model (C = 200pF, R = 0)
鈥?V
CC
= 3.3V 鹵 0.3V, Normal Range
鈥?V
CC
= 2.7V to 3.6V, Extended Range
鈥?V
CC
= 2.5V 鹵 0.2V
鈥?CMOS power levels (0.4碌 W typ. static)
碌
鈥?Rail-to-Rail output swing for increased noise margin
鈥?Available in SSOP, TSSOP, and TVSOP packages
IDT74ALVCHR162245
FEATURES:
DESCRIPTION:
DRIVE FEATURES:
APPLICATIONS:
鈥?Balanced Output Drivers: 鹵12mA
鈥?Low Switching Noise
This 16-bit bus transceiver is built using advanced dual metal CMOS
technology. The ALVCHR162245 device is designed for asynchronous
communication between data buses. The control-function implementation
minimizes external timing requirements.
This device can be used as two 8-bit transceivers or one 16-bit
transceiver. It allows data transmission 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 output-enable (OE) input can be used to disable the
device so that the buses are effectively isolated.
The ALVCHR162245 has series resistors in the device output structure
which will significantly reduce line noise when used with light loads. This
driver has been designed to drive 鹵12mA at the designated threshold
levels.
The ALVCHR162245 has 鈥渂us-hold鈥?which retains the inputs鈥?last state
whenever the input bus goes to a high impedance. This prevents floating
inputs and eliminates the need for pull-up/down resistors.
鈥?3.3V high speed systems
鈥?3.3V and lower voltage computing systems
FUNCTIONAL BLOCK DIAGRAM
1
DIR
1
2
DIR
48
24
25
36
13
35
14
33
16
32
17
30
19
29
20
1
O E
2
A
1
2
OE
1
A
1
47
2
46
3
44
5
43
6
41
8
40
9
38
11
1
B
1
2
A
2
1
B
2
2
A
3
1
B
3
2
A
4
1
B
4
2
A
5
1
B
5
2
A
6
1
B
6
2
A
7
27
1
B
7
2
A
8
26
2
B
1
1
A
2
2
B
2
1
A
3
2
B
3
1
A
4
2
B
4
1
A
5
2
B
5
1
A
6
2
B
6
1
A
7
22
2
B
7
1
A
8
37
12
1
B
8
23
2
B
8
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
1
漏 1999 Integrated Device Technology, Inc.
MARCH 1999
DSC-4606/1
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