New Packaging for Low Voltage Logic: DQFN (75% smaller than TSSOP)
Industry's smallest quad, hex and octal logic packages. Small packaging for low voltage
logic facilitates feature additions in ultra-portables. Picture below shows relative
size of DQFN versus TSSOP. Diagram shows the 74LCX138 - now available in
DQFN - used for processor port expansion in an MP3 player.
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IBIS Models
HSPICE Models
Packaging
DQFN Packaging
Logic
Technical support
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Known also as CROSSVOLTTM, the series consists of 5 low voltage product families
tailored to specific requirements for speed and drive.
VCXTM - Optimized for 2.5V, specified for
operation from 1.65V to 3.6V
Fairchild Semiconductor low voltage VCX logic with
speeds of 1.8ns is the first 2.5V logic standard capable
of operating at voltage ranges from 3.6V to 1.65V. VCX is ideal for designs in
low voltage 3.3V, 2.5V, 1.8, and mixed-voltage system applications. Current drive is 24mA.
List all VCX products
ALVC
Similar to VCX, specified as alternate industry family.
List all ALVC products
LCX – the 3.3V logic industry standard
Introduced in 1994, the LCX family has become the logic industry standard for
3.3V applications. Provides 4.5ns speed while operating at 3V. Over-voltage
tolerance allows the designer to use 5V components in conjunction with LCX.
Output current is 24mA.
List all LCX products
LVX – 3.3V CMOS
The LVX family operates in mixed
voltage systems between 3V and 5V systems. The 3.3V performance
of the LVX gates, MSI functions, and octals match or surpass the performance
of the 5V HC family.
List all LVX products
LVT – 3.3V BiCMOS
Fairchild Semiconductor’s Low Voltage Technology (LVT) is a 3.3V
family designed to perform similar to ABT (at 5V) with the advantages
of 3.3V. LVT is a BiCMOS product that provides bus hold inputs, live
insertion and extraction, and power up and power down 3-STATE. The
series provides 64mA drive.
List all LVT products
Low voltage family specification comparison
| TinyLogic® ULP *** |
CMOS |
0.9 / 1.2 / 1.5 / 1.8 / 2.5 / 3.3V |
7ns |
-2.6mA / 2.6mA |
0.9µA |
| TinyLogic® ULP-A *** |
CMOS |
0.9 / 1.2 / 1.5 / 1.8 / 2.5 / 3.3V |
3ns |
-24mA / 24mA |
5µA |
| VCX **** |
CMOS |
1.2 / 1.5 / 1.8 / 2.5 / 3.3V |
2.5 / 3.2ns |
-24mA / 24mA |
20µA |
| ALVC |
CMOS |
1.8 / 2.5 / 3.3V |
3.0ns |
-24mA / 24mA |
40µA |
| TinyLogic® UHS *** |
CMOS |
1.65 / 2.5 / 3.3 / 5V |
4.5ns |
-32mA / 32mA |
20mA |
| LCX (8) |
LCX (8) |
2.5 / 3.3V |
6.5ns |
-24mA / 24mA |
10mA |
| LCX (16) |
CMOS |
2.5 / 3.3V |
4.5ns |
-24mA / 24mA |
20mA |
| LVT (8) |
BiCMOS |
3.3V |
3.5ns |
-32mA / 64mA |
5mA |
| LVT (16) |
BiCMOS |
3.3V |
3.5ns |
-32mA / 64mA |
5mA |
| LVX (8) |
CMOS |
3.3V |
12.0ns |
-4mA / 4mA |
40µA |
* maximum specification at maximum specified VCC
** at maximum specified VCC
*** NAND Gate (00) for data
**** CLOAD = 30pF
Package availablity for low voltage logic
| Tiny ULP, ULP-A |
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| Tiny UHS |
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| LVX |
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| LCX |
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| ALVC |
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| VCX™ |
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| LVT |
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Low voltage product portfolio
| Buffers / Line Drivers |
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| Transceivers |
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| Registers / Flip-Flops |
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| Latches |
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| Counters |
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| Multiplexers |
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| Decoders / Demultiplexers |
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| Gates |
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| Voltage Translators |
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| 25 ohm Series Resistor |
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| 16- 18- 32-bit Functions |
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| 8- 10- 12-bit Functions |
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