1
EXTENDED COMMERCIAL TEMPERATURE RANGE
IDT74LVC157A
3.3V CMOS QUADRUPLE 2-LINE TO 1-LINE DATA SELECTOR
FEBRUARY 2000
1999 Integrated Device Technology, Inc. DSC-4721/-c
IDT74LVC157A
EXTENDED COMMERCIAL TEMPERATURE RANGE
DESCRIPTION:
This quadruple 2-line to 1-line data selector/multiplexer is built using
advanced dual metal CMOS technology. The LVC157A features a common
strobe (G) input. When the strobe is high, all outputs are low. When the
strobe is low, a 4-bit word is selected from one of two sources and is routed
to the four outputs. The device provides true data.
Inputs 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 LVC157A has been designed with a ±24mA output driver. This
driver is capable of driving a moderate to heavy load while maintaining
speed performance.
FUNCTIONAL BLOCK DIAGRAM
3.3V CMOS QUADRUPLE
2-LINE TO 1-LINE DATA
SELECTOR/MULTIPLEXER,
5 VOLT TOLERANT I/O
FEATURES:
– 0.5 MICRON CMOS Technology
– ESD > 2000V per MIL-STD-883, Method 3015;
> 200V using machine model (C = 200pF, R = 0)
– 1.27mm pitch SOIC, 0.635mm pitch QSOP,
0.65mm pitch SSOP, 0.65mm pitch TSSOP packages
– Extended commercial range of – 40°C to +85°C
–VCC = 3.3V ±0.3V, Normal Range
–VCC = 2.3V to 3.6V, Extended Range
– CMOS power levels (0.4µ W typ. static)
– Rail-to-Rail output swing for increased noise margin
– All inputs, outputs and I/O are 5 Volt tolerant
– Supports hot insertion
Drive Features for LVC157A:
– High Output Drivers: ±24mA
– Reduced system switching noise
1Y
4
1A
2Y
7
3Y
9
4Y
12
1B
2A
2B
3A
3B
4A
4B
2
3
5
6
11
10
14
13
G
A/B
1
15
APPLICATIONS:
• 5V and 3.3V mixed voltage systems
• Data communication and telecommunication systems