IDT74ALVCH162245
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
.EATURES:
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
IDT74ALVCH162245
DESCRIPTION:
This 16-bit bus transceiver is built using advanced dual metal CMOS
technology. The ALVCH162245 is designed for asynchronous commu-
nication between data buses. The control-function implementation mini-
mizes 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 ALVCH162245 has series resistors in the device out-put structure
of the 鈥淎鈥?port 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 鈥淏鈥?port has a 鹵24mA driver.
The ALVCH162245 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.
DRIVE .EATURES:
鈥?Balanced Output Drivers: 鹵12mA (A port)
鈥?High Output Drivers: 鹵24mA (B port)
APPLICATIONS:
鈥?3.3V high speed systems
鈥?3.3V and lower voltage computing systems
.UNCTIONAL BLOCK DIAGRAM
1
D IR
1
2
D IR
48
24
25
1
OE
1
A
1
47
2
46
3
44
5
43
6
41
8
40
9
38
11
2
OE
2
A
1
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
1
B
7
2
A
8
12
36
13
35
14
33
16
32
17
30
19
29
20
27
22
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
2
B
7
1
A
8
37
26
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.
APRIL 1999
DSC-4748/1
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