TMS27C240 262144 BY 16-BIT UV ERASABLE
TMS27PC240 262144 BY 16-BIT
PROGRAMMABLE READ-ONLY MEMORIES
SMLS240D– NOVEMBER 1990 – REVISED SEPTEMBER 1997
TMS27PC240 FN PACKAGE
(TOP VIEW)
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
6
5
4
3
2 1 44 43 42 41 40
A13
A12
A11
A10
A9
GND
NC
A8
7
DQ12
DQ11
DQ10
DQ9
39
38
37
36
35
34
33
32
31
30
29
8
V
± 10%
CC
9
’27C/PC240-10
’27C/PC240-12
’27C/PC240-15
100 ns
120 ns
150 ns
10
11
12
13
14
15
16
17
DQ8
†
†
GND
16-Bit Output For Use in
Microprocessor-Based Systems
NC
DQ7
DQ6
DQ5
DQ4
A7
A6
A5
Very High Speed SNAP! Pulse
Programming
Power-Saving CMOS Technology
3-State Output Buffers
18 19 20 21 22 23 24 25 26 27 28
400-mV Minimum DC Noise Immunity With
Standard TTL Loads
PIN NOMENCLATURE
Latchup Immunity of 250 mA on All Input
and Output Lines
A0–A17
Address Inputs
DQ0–DQ15 Inputs (programming)/Outputs
E
G
GND
NC
Chip Enable
Output Enable
Ground
No Connection
5-V Supply
No Pullup Resistors Required
Low Power Dissipation (V
= 5.5 V)
CC
– Active . . . 275 mW Worst Case
– Standby . . . 0.55 mW Worst Case
(CMOS-Input Levels)
V
CC
‡
V
PP
13-V Power Supply
Temperature Range Options
†
‡
Pins 11 and 30 (J package) and pins 12 and 34
(FN package) must be connected externally to
ground.
Only in program mode
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.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Copyright 1997, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
1
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443