IDT74LVCH16244A
3.3V CMOS 16-BIT BUFFER/DRIVER WITH 3-STATE OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
3.3V CMOS
IDT74LVCH16244A
16-BIT BUFFER/DRIVER
WITH 3-STATE OUTPUTS,
5 VOLT TOLERANT I/O AND BUS-HOLD
FEATURES:
DESCRIPTION:
• 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)
μ
• All inputs, outputs, and I/O are 5V tolerant
• Available in SSOP and TSSOP packages
The LVCH16244A 16-bit buffer/driver is built using advanced dual metal
CMOS technology. The LVCH16244A is designed specifically to improve
the performance and density of 3-state memory address drivers, clock
drivers, and bus-oriented receivers and transmitters. The device can be
used as four 4-bit buffers, two 8-bit buffers, or one 16-bit buffer. This device
provides true outputs and symmetrical active-low output-enable (OE)
inputs.
All pins of this 16-bit buffer/driver can be driven from either 3.3V or 5V
devices. This feature allows the use of this device a translator in a mixed
3.3V/5V supply system.
The LVCH16244A has been designed with a ±24mA output driver. The
driver is capable of driving a moderate to heavy load while maintaining
speed performance.
The LVCH16244A 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.
DRIVE FEATURES:
• High Output Drivers: ±24mA
• Reduced system switching noise
APPLICATIONS:
• 5V and 3.3V mixed voltage systems
• Data communication and telecommunication systems
FUNCTIONAL BLOCK DIAGRAM
1OE
1
1A1
47
2
1A2
46
3
1A3
44
5
1A4
43
6
2OE
48
2A1
41
8
2A2
40
9
2A3
38
11
2A4
37
12
3OE
25
1Y1
3A1
36
13
3Y1
1Y2
3A2
35
14
3Y2
1Y3
3A3
33
16
1Y4
3A4
32
17
3Y4
4OE
24
2Y1
4A1
30
19
4Y1
2Y2
4A2
29
20
4Y2
2Y3
4A3
27
22
2Y4
4A4
26
23
3Y3
4Y3
4Y4
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
MARCH 1999
1
© 1999 Integrated Device Technology, Inc.
DSC-4728/2
