DM74S288N ,256-BIT TTL PROMBlock Diagram
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DM74S288AN-DM74S288AV-DM74S288J-DM74S288N
256-BIT TTL PROM
Eil National]
Semiconductor
DM743288
DM748288 (32 x 8)
256-Bit TTL PROM
General Description Features
This Schottky memory is organized in the popular 32 words n Advanced titanium-tungsten (Ti-W) fuses
by 8 bits configuration. A memory enable input is provided I: Schottky-clamped for high speed
to control the output states. When the device is enabled, the Address access down to-25 ns max
outputs represent the contents of the selected word. When Enable t1t=ess---20 ns max
disabled, the 8 outputs go to the "OFF" or high impedance Enable mtxwary-20 ns max
state. a PNP inputs for reduced input loading
PROMs are shipped from the factory with lows in all loca- I: All DC and AC parameters guaranteed over
tions. A high may be programmed into any selected location temperature
by following the programming instructions. " Low voltage TRl-SAFETM programming
I: TFtl-STATEO Outputs
Block Diagram
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0ECtnE8 I I I I I I I
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ENABLE I I I I I I I
Wm 07 as 05 04 as t12 m an
TL/o/eaeo-t
Pin Names
AO-A4 Addresses
G Enable
GND Ground
t20-t27 Outputs
Vcc Power Supply
This Material Copyrighted By Its Respective Manufacturer
Connection Diagrams
Dual-ln-Llne Package
oo- 1 16 -vcc
tll- 2 15 ---6
024 3 14 p»
Q3-: 4 13 1-43
04- 5 12 --h2
05-6 ll-Al
tl6-7 IO-AO
GNO-8 9-m
TL/D/8360-2
TopView
Order Number DM748288J, 288AJ or
DM74S288N, 288AN
See NS Package Number J16A or N16A
Ordering Information
Plastic Loaded Chip Carrler (PLCC)
T, 8 % >10
I l I l l
3 2 1 2019
tt2-'4 18-A4
tu-- 5 17-A3
NC-6 16-NC
C4- 7 15-A2
05-18 14-At
9 1O 11 1213
l I I I I
8 t g ts 2
Toleew
Order Number DM74S288V or 288AV
See NS Package Number V20A
Commercial Temp Range (0°C to + 70°C)
Parameter/Order Number Max Access Time tns)
DM748288N 35
DM748288J 35
DM748288V 35
DM74S288AN 25
DM748288AJ 25
DM74S288AV 25
TL/D/BGBO-7
This Material Copyrighted By Its Respective Manufacturer
QBZSVLWG
DM743288
Absolute Maximum Ratings (Note1)
Operating Conditions
If Military/Aerospace speclfied devices are required, Min Max Units
please contact the National Semiconductor Sales Supply Voltage (Vcc)
Office/Dlstrlbutors for availability and specifications. Commercial 4.75 5.25 V
Supply Voltage (Note 2) -0.5V to + 7.0V Ambient Temperature (TA)
Input Voltage (Note 2) -1.2Vto + 5.5V Commercial 0 + 70 ''C
Output Voltage (Note 2) - 0.5V to + 5.5V Logical "ty' Input Voltage 0 0.8 V
Storage Temperature -65''C to + 150°C Logical "I '' Input Voltage 2.0 5.5 V
Lead Temperature (Soldering, 10 sec.) 300°C
ESD rating to be determined
DC Electrical Characteristics (Note 3)
Symbol Parameter Conditions DM743288 Units
Min Typ Max
lit. Input Load Current Vcc = Max, VIN = 0.45V -80 -250 MA
IIH InputLeakage Current Vcc = Max, VIN = 2.7V 25 ”A
Vcc = Max, VIN = 5.5V 1.0 mA
VOL Low Level OutputVoItage Vcc = Min, '01. = 16 mA 0.35 0.45 V
" (Note 4) Low Level Input Voltage 0.80 V
VIH (Note 4) High Level Input Voltage 2.0 V
Vc InputClamp Voltage Vcc = Min, IN = -18 mA -0.8 --1.2 V
C. Input Capacitance Vcc == 5.0, Ihr: = 2.0V 4 0 F
TA = 25°C, 1 MHz . p
Co Output Capacitance Vcc -_- 5.0V, vo = 2.0V 6 0 F
TA = 25°C. 1 MHz, Outputs Off . p
'00 Power Supply Current Vcc = Max, Input Grounded 70 1 10 m A
All Outputs Open
los Short Circuit vo = 0V, Vcc = Max - _
Output Current (Note 5) 20 70 mA
loz Output Leakage VCC = Max, Vo == 0.45V to 2.4V +50 “A
(TRI-STATE) Chip Disabled _ 50 F A
VOH Output Voltage High IOH = --2.0 mA V
lou = -6.5 mA 2.4 3.2 V
Note 1: Absolute maximum ratings are those values beyond which the device may be permanently damaged. They do not mean that the device may be operated at
these values.
Note 2: These limits do not apply during programming. For the programming ratings, refer to the programming instructions.
Note 3: These limits apply over the entire operating range unless stated otherwise. All typical values are for Vcc = 5.0V and TA = 25''C.
Note 4: These are absolute voltages with respect to pin 8 on the device and include all overshoots due to system and/or tester noise. Do not attempt to test these
values without suitable equipment.
Note 5: During los measurement. only one output at a time should be grounded. Permanent damage may otherwise result.
This Material Copyrighted By Its Respective Manufacturer
AC Electrical Characteristics with Standard Load and Operating Conditions
COMMERCIAL TEMPERATURE RANGE (0°C to + 70°C)
JEDEC DM748288 DM748288A .
Symbol Parameter S b I Units
ym tt Min Typ Max Min Typ Max
TAA Address Access Time TAVQV 22 35 17 25 ns
TEA Enable Access Time TEVOV 15 20 15 20 ns
TER Enable Recovery Time TEXQX 15 25 15 20 ns
TZX Output Enable Time TEVQX 15 25 15 20 ns
TXZ Output Disable Time TEXQZ 15 25 15 20 ns
Functional Description
TESTABILITY
The Schottky PROM die includes extra rows and columns of
fusable links for testing the programmability of each chip.
These test fuses are placed at the worst-case chip locations
to provide the highest possible confidence in the program-
ming tests in the final product. A ROM pattern is also per-
manently fixed in the additional circuitry and coded to pro-
vide a parity check of input address levels. These and other
test circuits are used to test for correct operation of the row
and column-select circuits and functionality of input and en-
able gates. All test circuits are available at both wafer and
assembled device levels to allow 100% functional and para-
metric testing at every stage of the test flow.
RELIABILITY
As with all National products, the Ti-W PROMs are subject-
ed to an on-going reliability evaluation by the Reliability As-
surance Department. These evaluations employ accelerat-
ed life tests, including dynamic high-temperature operating
life, temperature-humidity life, temperature cycling, and ther-
mal shock. To date, nearly 7.4 million Schottky Ti-W PROM
device hours have been logged, with samples in Epoxy B
molded DIP (N-package), PLCC (V-package) and CERDlP
(J-package). Device performance in all package configura-
tions is excellent.
TlTANIUM-TUNGSTEN FUSES
National's Programmable Read-Only Memories (PROMs)
feature titanium-tungsten (Ti-W) fuse links designed to pro-
gram efficiently with only 10.5V applied. The high perform-
ance and reliability of these PROMs are the result of fabrica-
tion by a Schottky bipolar process, of which the titanium-
tungsten metalization is an integral part, and the use of an
on-chip programming circuit.
A major advantage of the titanium-tungsten fuse technology
is the low programming voltage of the fuse links. At 10.5V,
this virtually eliminates the need for guard-ring devices and
wide spacings required tor other fuse technologies. Care is
taken, however, to minimize voltage drops across the die
and to reduce parasites. The device is designed to ensure
that worst-case fuse operating current is low enough for
reliable long-term operation. The Darlington programming
circuit is liberally designed to insure adequate power density
for blowing the fuse links. The complete circuit design is
optimized to provide high performance over the entire oper-
ating ranges of Vcc and temperature.
This Material Copyrighted By Its Respective Manufacturer
QBZSHWCI
This datasheet has been :
www.ic-phoenix.com
Datasheets for electronic components.
National Semiconductor was acquired by Texas Instruments.
corp/docs/irwestor_relations/Pr_09_23_201 1_national_semiconductor.html
This file is the datasheet for the following electronic components:
DM74S288V - product/dm743288v?HQS=TI-nu|I-nuIl-dscatalog-df-pf-null-wwe
DM74S288AJ - productldm743288aj?HQS=T|—nul|-null-dscatalog-df—pf—nuII-wwe
DM74S288 - product/dm743288?HQS=T|-nu|I-nu|I-dscatalog-df-pf-null-wwe
DM74S288AN - product/dm74sZ88an?HQS=TI-nu|I-null-dscatalog-df—pf-nuII-wwe
DM74S288AV - product/dm745288av?HQS=T|-null-nulI-dscatalog-df-pf-null-wwe
DM74S288J - product/dm745288j?HQS=T|-nulI-nulI-dscatalog-df—pf—nuII-wwe
DM74S288AN - product/dm743288an?HQS=T|-nu|I-nu|I-dscatalog-df—pf—nuII-wwe
DM74S288AJ - product/dm743288aj?HQS=T|—nuII-nulI-dscatalog-df—pf—nuII-wwe
DM74S288 - product/dm743288?HQS=T|-nu|l-nu|l-dscatalog-df—pf—null-wwe
DM74S288V - product/dm743288v?HQS=Tl-nu|I-nuIl-dscatalog-df-pf-nulI-wwe
DM74S288N - product/dm74sZ88n?HQS=T|-nulI-nulI-dscatalog-df-pf-nuIl-wwe
DM74S288N - product/dm74sZ88n?HQS=T|-nuII-nulI-dscatalog-df—pf—nuII-wwe
DM74S288N - product/dm743288n?HQS=T|-null-null-dscatalog-df-pf-null-wwe
DM74S288AV - product/dm74sZ88av?HQS=T|-null-nulI-dscatalog-df-pf-nuIl-wwe
DM74S288AV - product/dm743288av?HQS=TI-null-nulI-dscatalog-df-pf-nuIl-wwe
DM74S288AN - product/dm743288an?HQS=TI-nu|I-null-dscataIog-df-pf-null-wwe
DM74S288V - product/dm743288v?HQS=TI-nu|I-nuIl-dscatalog-df-pf-nulI-wwe
DM74S288 - product/dm743288?HQS=T|-nu|I-nu|I-dscatalog-df-pf-null-wwe
DM74S288J - product/dm743288j?HQS=T|-nu|I-nulI—dscatalog-df—pf—nuII-wwe
DM74S288AJ - product/dm743288aj?HQS=T|—null-nulI-dscatalog-df—pf-nuII-wwe
DM74S288J - product/dm74s288j?HQS=T|-nulI-nulI-dscatalog-df-pf-null-wwe
