32Kx8 OTP ROM, 200 ns access
The TMS27PC256-2NL is a 32Kx8 one-time programmable read-only memory from Texas Instruments, packaged in a 28-pin PDIP (0.600-inch wide). With a 200 ns access time, it fits into legacy 8-bit microprocessor and microcontroller systems where the bus timing expects a 200 ns or slower memory cycle — a 10 MHz 8086 with 4 wait states, for example, or a 68000 running at 8 MHz with the DTACK line stretched.
Active production, RoHS non-compliant
The part is RoHS non-compliant (lead-bearing solder balls / die-attach), so it is exempt from the RoHS directive for certain applications or intended for repair / legacy-support builds where the exemption applies.
Bulk tube delivery
Shipped in bulk tubes (anti-static PDIP rails) — no tape-and-reel option. The 28-pin PDIP footprint is a 0.600-inch wide body, 0.100-inch pitch, compatible with standard DIP sockets or wave-solder through-hole assembly.