82S123 - NXP

82S123 256-bit TTL bipolar PROM

The 82S23 and 82S123 are field programmable, which means that custom patterns are immediately available by following the Signetics Generic I fusing procedure. The 82S23 and 82S123 devices are supplied with all outputs at logical Low. Outputs are programmed to a logic High level at any specified address by fusing the Ni-Cr link matrix. These devices include o.

Features

• Address access time: 50ns max
• Power dissipation: 1.3mW/bit typ
• Input loading:
  –100µA max
• On-chip address decoding
• One Chip Enable input
• Output options:
  – N82S23: Open Collector
  – N82S123: 3-State
• No separate fusing pins
• Unprogrammed outputs are Low level
• Fully TTL compatible APPLICATIONS
• Prototyping/volume production
• Sequential controllers
• Format conversion
• Hardwired algorithms
• Random logic
• Code conversion PIN CONFIGURATIONS N Package O1 1 O2 2 O3 3 O4 4 O5 5 O6 6 O7 7 GND 8 16 VCC 15 CE 14 A4 13 A3 12 A2 11 A1 10 A0 9 O8 A Package O2 O1 NC VCC CE 3 2 1 20 1.