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PAL16R4

AMD
Part Number PAL16R4
Manufacturer AMD
Description (PAL16xx) 20-Pin TTL Programmable Array Logic
Published Jun 10, 2007
Detailed Description FINAL COM’L: -4/5/7/B/B-2/A, D/2 PAL16R8 Family 20-Pin TTL Programmable Array Logic DISTINCTIVE CHARACTERISTICS s As f...
Datasheet PDF File PAL16R4 PDF File

PAL16R4
PAL16R4

Overview
FINAL COM’L: -4/5/7/B/B-2/A, D/2 PAL16R8 Family 20-Pin TTL Programmable Array Logic DISTINCTIVE CHARACTERISTICS s As fast as 4.
5 ns maximum propagation delay s Popular 20-pin architectures: 16L8, 16R8, 16R6, 16R4 s Programmable replacement for high-speed TTL logic s Register preload for testability s Power-up reset for initialization Advanced Micro Devices s Extensive third-party software and programmer support through FusionPLD partners s 20-Pin DIP and PLCC packages save space s 28-Pin PLCC-4 package provides ultra-clean high-speed signals GENERAL DESCRIPTION The PAL16R8 Family (PAL16L8, PAL16R8, PAL16R6, PAL16R4) includes the PAL16R8-5/4 Series which provides the highest speed in the 20-pin TTL PAL device family, making the series ideal for high-performance applications.
The PAL16R8 Family is provided with standard 20-pin DIP and PLCC pinouts and a 28-pin PLCC pinout.
The 28-pin PLCC pinout contains seven extra ground pins interleaved between the outputs to reduce noise and increase speed.
www.
DataSheet4U.
com The AND array is programmed to create custom product terms, while the OR array sums selected terms at the outputs.
In addition, the PAL device provides the following options: — Variable input/output pin ratio — Programmable three-state outputs — Registers with feedback Product terms with all connections opened assume the logical HIGH state; product terms connected to both true and complement of any single input assume the logical LOW state.
Registers consist of D-type flip-flops that are loaded on the LOW-to-HIGH transition of the clock.
Unused input pins should be tied to VCC or GND.
The entire PAL device family is supported by the FusionPLD partners.
The PAL family is programmed on conventional PAL device programmers with appropriate personality and socket adapter modules.
Once the PAL device is programmed and verified, an additional connection may be opened to prevent pattern readout.
This feature secures proprietary circuits.
The devices provide u...


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