CY7C344B

Features:

•High-performance, high-density replacement for TTL, 74HC, and custom logic
•32 macrocells, 64 expander product terms in one LAB
•8 dedicated inputs, 16 I/O pins
•0.8-micron double-metal CMOS EPROM technology
•28-pin, 300-mil DIP, cerDIP or 28-pin HLCC, PLCC package


Pinout




Specifications

(Above which the useful life may be impaired. For user guide-lines, not tested.)
Storage Temperature .................................65°C to +150°C
Ambient Temperature with
Power Applied...................................................0°C to +70°C
Maximum Junction Temperature (Under Bias).............150°C
Supply Voltage to Ground Potential...............2.0V to +7.0V
Maximum Power Dissipation...................................1500 mW
DC VCC or GND Current............................................500 mA

Static Discharge Voltage
(per MIL-STD-883, Method 3015).............................>2001V
DC Output Current, per Pin......................25 mA to +25 mA
DC Input Voltage[2].........................................3.0V to +7.0V
DC Program Voltage...................................................+13.0V

Description

   Available in a 28-pin, 300-mil DIP or windowed J-leaded ceramic chip carrier (HLCC), the CY7C344 represents thedensest EPLD of this size. Eight dedicated inputs and 16 bidirectional I/O pins communicate to one logic array block. In the CY7C344 LAB there are 32 macrocells and 64 expander product terms. When an I/O macroc ell is used as an input, two expanders are used to create an input path. Even if all of the I/O pins are driven by macroc ell registers, there are still 16 "buried" registers available. All inputs, macrocells, and I/O pins are interconnected within the LAB.

   The speed and density of the CY 7C344 makes it a natural for all types of applications. With just the CY7C344, the designer can implement complex state machines, registered logic, and combinatorial "glue" logic, without using multiple chips. This architectural flexibility allows the CY7C344 to replace multichip TTL solutions, whether they are synchronous,asynchronous, combinatorial, or all three.