TMS27C240

Features:

Organization . . . 262144 by 16 Bits
Single 5-V Power Supply
All Inputs/Outputs Fully TTL Compatible
Static Operations (No Clocks, No Refresh)
Max Access/Min Cycle Time V_CC ± 10%
  '27C/PC240-10 100 ns
  '27C/PC240-12 120 ns
  '27C/PC240-15 150 ns
16-Bit Output For Use in Microprocessor-Based Systems
Very High Speed SNAP! Pulse Programming
Power-Saving CMOS Technology
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
No Pullup Resistors Required
Low Power Dissipation (V_CC = 5.5 V)
  Active . . . 275 mW Worst Case
  Standby . . . 0.55 mW Worst Case (CMOS-Input Levels)
Temperature Range Options


Pinout




Specifications

Supply voltage range, V_CC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.6 V to 7 V
Supply voltage range, V_PP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.6 V to 13 V
Input voltage range (see Note 1): All inputs except A9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.6 V to V_CC + 1 V
                                                      A9  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.6 V to 13.5 V
Output voltage range (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.6 V to V_CC + 1 V
Operating free-air temperature range ('27C240-_ _JL; '27PC240-_ _ FNL)  . . . . . . . . . . . . . . . . . 0° C to 70° C
Operating free-air temperature range ('27C240-_ _JE, '27PC240-_ _FNE) . . . . . . . . . . . . . . . . . . 40° C to 85° C
Storage temperature range, T_stg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C to 150° C

† Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTE 1: All voltage values are with respect to GND.


Description

The TMS27C240 series are 262144 by 16-bit (4194304-bit), ultraviolet-light erasable, electrically programmable read-only memories (EPROMs).

The TMS27PC240 series are 262144 by 16-bit (4194304-bit), one-time programmable (OTP) electrically programmable read-only memories (PROMs).

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 TMS27C240 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 TMS27C240 is offered with two choices of temperature ranges of 0°C to 70°C (JL suffix) and 40°C to 85°C (JE suffix). See Table 1.