27C020 2MBit (256KB) UV Erasable Programmable Read-Only Memory

Datasheet  TMS27C020

Features:

Organization . . . 256K × 8

Single 5-V Power Supply

Operationally Compatible With Existing
Megabit EPROMs

Industry Standard 32-Pin Dual-In-line
Package and 32-Lead Plastic Leaded Chip
Carrier

All Inputs/Outputs Fully TTL Compatible

±10% VCC Tolerance

Max Access/Min Cycle Time
VCC ± 10%
’27C/PC020-12 120 ns
’27C/PC020-15 150 ns
’27C/PC020-20 200 ns
’27C/PC020-25 250 ns

8-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 Pins

No Pullup Resistors Required

Low Power Dissipation (VCC = 5.5 V)
– Active... 165 mW Worst Case
– Standby... 0.55 mW Worst Case
(CMOS-Input Levels)

PEP4 Version Available With 168-Hour
Burn-In, and Choices of Operating
Temperature Ranges