PLS153A

Philips Semiconductors Programmable Logic Devices Product specification Programmable logic arrays (18 × 42 × 10) PLS153/A DESCRIPTION The PLS153 and PLS153A are two-level logic elements, consisting of 42 AND gates and 10 OR gates with fusible link connections for programming I/O polarity and direction. All AND gates are linked to 8 inputs (I) and 10 bidirectional I/O lines (B). These yield variable I/O gate configurations via 10 direction control gates (D), ranging from 18 inputs to 10 outputs. On-chip T/C buffers couple either True (I, B) or Complement (I, B) input polarities to all AND gates, whose outputs can be optionally linked to all OR gates. Their output polarity, in turn, is individually programmable through a set of EX-OR gates for implementing AND/OR or AND/NOR logic functions. The PLS153 and PLS153A are field-programmable, enabling the user to quickly generate custom patterns using standard programming equipment. FEATURES Field-Programmable (Ni-Cr links) 8 inputs 42 AND gates 10 OR gates 10 bidirectional I/O lines Active-High or -Low outputs 42 product terms: – 32 logic terms – 10 control terms PIN CONFIGURATIONS N Package I0 I1 I2 I3 I4 I5 I6 I7 B0 1 2 3 4 5 6 7 8 9 20 19 18 17 16 15 14 13 12 11 VCC B9 B8 B7 B6 B5 B4 B3 B2 B1 I/O propagation delay: – PLS153: 40ns (max) – PLS153A: 30ns (max) GND 10 Input loading: –100µA (max) Power dissipation: 650mW (typ) 3-State outputs TTL compatible APPLICATIONS N = Plastic DIP (300mil-wide) ...