TMS27C128 Status: OBSOLETE

Product Information

Features

This Data Sheet is Applicable to All
TMS27C128s and TMS27PC128s Symbolized
with Code "B" as Described on Page 12.

• Organization...16K × 8
• Single 5-V Power Supply
• Pin Compatible With Existing 128K MOS
  ROMs, PROMs, and EPROMs
• All Inputs/Outputs Fully TTL Compatible
• Max Access/Min Cycle Times
  V_CC ± 10%
  
• Power Saving CMOS Technology
• Very High-Speed SNAP! Pulse Programming
• 3-State Output Buffers
• 400-mV Minimum DC Noise Immunity With Standard TTL Loads
• Latchup Immunity of 250 mA on All Input and Output Lines
• Low Power Dissipation (V_CC = 5.25 V)
  • Active...158 mW Worst Case
  • Standby...1.4 mW Worst Case
    (CMOS Input Levels)
• PEP4 Version Available With 168-Hour Burn-In and Choices of Operating Temperature Ranges
• 128K EPROM Available With MIL-STD-883C Class B High-Reliability Processing (SMJ27C128)

Description

The TMS27C128 series are 131072-bit, ultraviolet-light erasable, electrically programmable read-only memories.

The TMS27PC128 series are 131072-bit, one time electrically programmable read-only memories.

These devices are fabricated using power-saving CMOS technology for high speed and simple interface with MOS and bipolar circuits. All inputs (including program data inputs) can be driven by Series 74 TTL circuits without the use of external pull-up resistors. Each output can drive one Series 74 TTL circuit without external resistors.

The data outputs are three-state for connecting multiple devices to a common bus. The TMS27C128 and the TMS27PC128 are pin compatible with 28-pin 128K MOS ROMs, PROMs, and EPROMs.

The TMS27C128 EPROM is offered in a dual-in-line ceramic package (J suffix) designed for insertion in mounting hole rows on 15,2-mm (600-mil) centers. The TMS27C128 is offered with two operating temperature ranges of 0°C to 70°C (JL suffix) and - 40°C to 85°C (JE suffix). The TMS27C128 is also offered with 168-hour burn-in temperature ranges (JL4 and JE4 suffixes). (See table below).

The TMS27PC128 PROM is offered in a dual-in-line plastic package (N suffix) designed for insertion in mounting hole rows on 15,2-mm (600-mil) centers. The TMS27PC128 is also supplied in a 32-lead plastic leaded chip carrier package using 1,25-mm (50-mil) lead spacing (FM suffix). The TMS27PC128 is also offered with two operating temperature ranges of 0°C to 70°C (NL and FML suffixes) and -40°C to 85°C (NE and FME suffixes). The TMS27PC128 is also offered with 168 hour burn-in temperature ranges (NL4, FML4, NE4, and FME4 suffixes). (See table below).

All package styles conform to JEDEC standards.

These EPROMs and PROMs operate from a single 5-V supply (in the read mode), thus are ideal for use in microprocessor-based systems. One other 12-13-V supply is needed for programming . All programming signals are TTL level. These devices are programmable by using the SNAP! Pulse programming algorithm.The SNAP! Pulse programming algorithm uses a V_PP of 13.0 V and a V_CC of 6.5 V for a nominal programming time of two seconds. For programming outside the system, existing EPROM programmers can be used. Locations may be programmed singly, in blocks, or at random.