PRODUCT SELECTION GUIDE
PARAMETER 191C/291C-25 191C/291C-35 191C/291C-45 191C/291C-55
Address Access Time (Max) 25 ns 35 ns 45 ns 55 ns
CS to Output Valid Time (Max) 12 ns 20 ns 20 ns 20 ns
HIGH SPEED 2K
x
8 CMOS PROM/RPROM
KEY FEATURES
Ultra-Fast Access Time Pin Compatible with Am27S191/291
— tACC = 25 ns and N82S191 Bipolar PROMs
—t
CS = 12 ns Immune to Latch-UP
Low Power Consumption — Up to 200 mA
Fast Programming ESD Protection Exceeds 2000V
Available in 300 Mil DIP and PLDCC
GENERAL DESCRIPTION
The WS57C191C/291C is an extremely High Performance 16K UV Erasable Electrically Re-Programmable Read
Only Memory (RPROM). It is manufactured in an advanced CMOS technology which enables it to operate at Bipolar
PROM speeds while consuming only 25% of the power required by its Bipolar counterparts. The WS57C191C/291C
is also configured in the standard Bipolar PROM pinout which provides an easy upgrade path for systems which are
currently using Bipolar PROMs.
The WS57C191C is packaged in a conventional 600 mil DIP package as well as a Plastic Leaded Chip Carrier
(PLDCC) and a Ceramic Leadless Chip Carrier (CLLCC). The WS57C291C is packaged in a space saving 300 mil
DIP package configuration. Both are available in commercial, industrial, and military operating temperature ranges.
WS57C191C/291C
VCC
A8
A9
A10
CS1/VPP
CS2
CS3
O7
O6
O5
O4
O3
A7
A6
A5
A4
A3
A2
A1
A0
O0
O1
O2
GND
A10
CS1/VPP
CS2
CS3
NC
O7
O6
A5 A6 A7 VCC A8 A9
NC
A4
A3
A2
A1
A0
NC
O0
O1 O2 NC O3 O4 O5
GND
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
1
432 28 27 26
25
24
23
22
21
20
19
5
6
7
8
9
10
11
12 13 14 15 16 17 18
TOP VIEW
Chip Carrier CERDIP/Plastic DIP
PIN CONFIGURATION
2-7
ROW
DECODER
EPROM ARRAY
16,384 BITS
COLUMN
DECODER
SENSE
AMPLIFIERS
8
CS2
CS3
OUTPUTS
CS1/VPP
A0 - A4
COLUMN
ADDRESSES
A5 - A10
ROW
ADDRESSES
6
5
BLOCK DIAGRAM
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DC READ CHARACTERISTICS
Over Operating Range. (See Above)
SYMBOL PARAMETER TEST CONDITIONS MIN MAX UNITS
VIL Input Low Voltage (Note 3) –0.1 0.8 V
VIH Input High Voltage (Note 3) 2.0 VCC + 0.3 V
VOL Output Low Voltage IOL = 16 mA 0.4 V
VOH Output High Voltage IOH = –4 mA 2.4 V
VCC Active Current VCC = 5.5V, f = 0 MHz Comm'l 30 mA
ICC1 (CMOS) (Note 1), Output Not Loaded Industrial 35 mA
Add 2mA/MHz for AC Operation Military 35 mA
VCC Active Current VCC = 5.5V, f = 0 MHz Comm'l 40 mA
ICC2 (TTL) (Note 2), Output Not Loaded Industrial 50 mA
Add 2mA/MHz for AC Operation Military 50 mA
ILI Input Leakage
Current VIN = 5.5V or Gnd –10 10 µA
ILO Output Leakage
Current VOUT = 5.5 V or Gnd –10 10 µA
WS57C191C/291C
2-8
OPERATING RANGE
RANGE TEMPERATURE VCC
Commercial 0°C to +70°C +5V ± 10%
Industrial 40°C to +85°C +5V ± 10%
Military 55°C to +125°C +5V ± 10%
ABSOLUTE MAXIMUM RATINGS*
Storage Temperature............................–65° to + 150°C
Voltage on any Pin with
Respect to Ground ....................................–0.6V to +7V
VPP with Respect to Ground...................–0.6V to + 14V
ESD Protection..................................................>2000V
NOTES: 1. CMOS inputs: GND ± 0.3V or VCC ±0.3V.
2. TTL inputs: VIL
0.8V, VIH 2.0V.
3. These are absolute voltages with respect to device ground pin and include all overshoots due to system and/or tester noise.
Do not attempt to test these values without suitable equipment.
*NOTICE:
Stresses above those listed under "Absolute Maximum
Ratings" may cause permanent damage to the device.
This is a stress rating only and functional operation of
the device at these or any other conditions above
those indicated in the operational sections of this
specification is not implied. Exposure to absolute
maximum rating conditions for extended periods of
time may affect device reliability.
PINS CS1/ CS2 CS3 VCC OUTPUTS
MODE VPP
Read VIL VIH VIH VCC DOUT
Output Disable VIH X X VCC High Z
Output Disable X VIL X VCC High Z
Program VPP X X VCC DIN
Program Verify VIL VIH VIH VCC DOUT
Output Disable X X VIL VCC High Z
MODE SELECTION
WS57C191C/291C
2-9
AC READ CHARACTERISTICS
Over Operating Range. (See Above)
PARAMETER SYMBOL 191C/291C-25 191C/291C-35 191C/291C-45 191C/291C-55 UNITS
MIN MAX MIN MAX MIN MAX MIN MAX
Address to Output Delay tACC 25 35 45 55
CS to Output Delay tCS 12 20 20 20 ns
Output Disable to
Output Float*tDF 12 20 20 20
Address to Output Hold tOH 0 0 0 0
*Sampled, Not 100% Tested
AC READ TIMING DIAGRAM
VALID
ADDRESSES
OUTPUTS
tACC tOH
tCS
tDF
VALID
CS
WS57C191C/291C
2-10
SYMBOL PARAMETER CONDITIONS TYP(5) MAX UNITS
CIN Input Capacitance VIN = 0V 4 6 pF
COUT Output Capacitance VOUT = 0V 8 12 pF
CVPP VPP Capacitance VPP = 0 V 18 25 pF
CAPACITANCE
(4)
TA= 25°C, f = 1 MHz
30 pF
(INCLUDING SCOPE
AND JIG
CAPACITANCE)
98
2.01 V
D.U.T.
A.C. TESTING INPUT/OUTPUT WAVEFORMTEST LOAD
(High Impedance Test Systems)
3.0
0.0 1.5 1.5
TEST
POINTS
NOTE: 6. Provide adequate decoupling capacitance as close as possible to this device to achieve the published A.C. and D.C. parameters.
A 0.1 microfarad capacitor in parallel with a 0.01 microfarad capacitor connected between VCC and ground is recommended.
Inadequate decoupling may result in access time degradation or other transient performance failures.
NOTES: 4. This parameter is only sampled and is not 100% tested.
5.Typical values are for TA = 25°C and nominal supply voltages.
A.C. testing inputs are driven at 3.0 V for a logic "1" and 0.0 V for a
logic "0." Timing measurements are made at 1.5 V for input and
output transitions in both directions.
2-11
WS57C191C/291C
1.2
1.1
1.0
0.9
0.8 -55 -35 -15 5 25 45 65 85 105 125
AMBIENT TEMPERATURE (°C)
NORMALIZED ICC
1.60
1.40
1.20
1.00
0.80
0.60 4.0 4.5 5.0 5.5 6.0
SUPPLY VOLTAGE (V)
NORMALIZED ICC
1.6
1.4
1.2
1.0
0.8
0.6
-55 -35 -15 5 25 45 65 85 105 125
AMBIENT TEMPERATURE (°C)
NORMALIZED Taa
40.0
35.0
30.0
25.0
20.0
15.0
10.0
5.0
0.0 0.0 200 400 600 800 1000
CAPACITANCE (pF)
DELTA Taa (ns)
NORMALIZED SUPPLY CURRENT
vs.
SUPPLY VOLTAGE
TYPICAL ACCESS TIME CHANGE
vs.
OUTPUT LOADING
NORMALIZED Taa
vs.
AMBIENT TEMPERATURE
NORMALIZED SUPPLY CURRENT
vs.
AMBIENT TEMPERATURE
PROGRAMMING INFORMATION
DC CHARACTERISTICS
(TA= 25 ± 5°C, VCC = 6.25 V ± 0.25 V, VPP = 12.75 ± 0.25 V)
SYMBOLS PARAMETER MIN MAX UNITS
ILI Input Leakage Current –10 10 µA
(VIN = VCC or Gnd)
IPP VPP Supply Current During 60 mA
Programming Pulse
ICC VCC Supply Current 25 mA
VOL Output Low Voltage During Verify 0.45 V
(IOL = 16 mA)
VOH Output High Voltage During Verify 2.4 V
(IOH = –4 mA)
WS57C191C/291C
2-12
SYMBOLS PARAMETER MIN TYP MAX UNITS
tAS Address Setup Time 2 µs
tDF Chip Disable Setup Time 30 ns
tDS Data Setup Time 2 µs
tPW Program Pulse Width 100 200 µs
tDH Data Hold Time 2 µs
tCS Chip Select Delay 30 ns
tRF VPP Rise and Fall Time 1 µs
NOTES: 8. VPP must not be greater than 13 volts including overshoot.
AC CHARACTERISTICS
(TA= 25 ± 5°C, VCC = 6.25 V ± 0.25 V, VPP = 12.75 ± 0.25 V)
PROGRAMMING WAVEFORM
ADDRESS STABLE
ADDRESSES VIH
VIL
VPP
VIH
VIH
VIL
VIL
CS1/VPP
DATA
tAS
tDF
tDS tPW tDH tCS
tRF
tRF
DATA OUTDATA IN
DON'T CARE
CS2/CS3 VIH
VIL
ORDERING INFORMATION
SPEED PACKAGE PACKAGE OPERATING WSI
PART NUMBER (ns) TYPE DRAWING TEMPERATURE MANUFACTURING
RANGE PROCEDURE
WS57C191C
WS57C191C-25D 25 24 Pin CERDIP, 0.6" D1 Comm’l Standard
WS57C191C-25J 25 28 Pin PLDCC J3 Comm’l Standard
WS57C191C-25P 25 24 Pin Plastic DIP, 0.6" P2 Comm’l Standard
WS57C191C-35D 35 24 Pin CERDIP, 0.6" D1 Comm’l Standard
WS57C191C-35J 35 28 Pin PLDCC J3 Comm’l Standard
WS57C191C-35P 35 24 Pin Plastic DIP, 0.6" P2 Comm’l Standard
WS57C191C-45D 45 24 Pin CERDIP, 0.6" D1 Comm’l Standard
WS57C191C-45DI 45 24 Pin CERDIP, 0.6" D1 Industrial Standard
WS57C191C-45DMB*45 24 Pin CERDIP, 0.6" D1 Military MIL-STD-883C
WS57C191C-45J 45 28 Pin PLDCC J3 Comm’l Standard
WS57C191C-45P 45 24 Pin Plastic DIP, 0.6" P2 Comm'l Standard
WS57C191C-55D 55 24 Pin CERDIP, 0.6" D1 Comm’l Standard
WS57C191C-55DMB*55 24 Pin CERDIP, 0.6" D1 Military MIL-STD-883C
WS57C291C
WS57C291C-25S 25 24 Pin Plastic DIP, 0.3" S1 Comm'l Standard
WS57C291C-25T 25 24 Pin CERDIP, 0.3" T1 Comm’l Standard
WS57C291C-35S 35 24 Pin Plastic DIP, 0.3" S1 Comm'l Standard
WS57C291C-35T 35 24 Pin CERDIP, 0.3" T1 Comm’l Standard
WS57C291C-35TMB*35 24 Pin CERDIP, 0.3" T1 Military MIL-STD-883C
WS57C291C-45S 45 24 Pin Plastic DIP, 0.3" S1 Comm'l Standard
WS57C291C-45T 45 24 Pin CERDIP, 0.3" T1 Comm'l Standard
WS57C291C-45TI 45 24 Pin CERDIP, 0.3" T1 Industrial Standard
WS57C291C-45TMB*45 24 Pin CERDIP, 0.3" T1 Military MIL-STD-883C
WS57C291C-55T 55 24 Pin CERDIP, 0.3" T1 Comm’l Standard
WS57C291C-55TMB*55 24 Pin CERDIP, 0.3" T1 Military MIL-STD-883C
2-13
WS57C191C/291C
PROGRAMMING/ALGORITHMS/ERASURE/PROGRAMMERS REFER TO
PAGE 5-1
NOTE: 9. The actual part marking will not include the initials "WS."
*SMD product. See section 4 for DESC SMD number.
The WS57C191C and WS57C291C are programmed using Algorithm D shown on page 5-9.
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