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PY291A-35DC

型号：

PY291A-35DC

描述：

2K ×8可重复编程的PROM[ 2K X 8 REPROGRAMMABLE PROM ]

品牌：

PYRAMID[ PYRAMID SEMICONDUCTOR CORPORATION ]

页数：

9 页

PDF大小：

101 K

下载PDF手册
PY291A  
2K X 8 REPROGRAMMABLE PROM  
FEATURES  
Windowed devices for reprogramming  
EPROM Technology for reprogramming  
Fully TTL Compatible Inputs and Outputs  
Standard Pinout (JEDEC Approved)  
High Speed  
– 20/25/35/50 ns (Commercial)  
– 35/50 ns (Military)  
– 24-Pin 300 mil DIP  
Low Power Operation: 660 mW  
Single 5V±10% Power Supply  
– Windowed CERDIP  
– Non-Windowed CERDIP  
– Non-Windowed Plastic DIP  
DESCRIPTION  
To perform a read operation from the device, CS1 is  
LOW and CS2 and CS3 are HIGH. The memory contents  
intheaddressestablishedbytheAddresspins(A0 toA10)  
will become available on the outputs (O0 to O7).  
The PY291A is a 2Kx8 CMOS PROM. The device is  
availableinwindowedpackageswhichwhenexposedto  
UVlight,thememorycontentinthePROMiserasedand  
can be reprogrammed. EPROM technology is used in  
the memory cells for programming. The EPROM re-  
quires a 12.5V for programming. Devices are tested to  
insure that performance of the device meets the DC and  
AC specification limits after customer programming.  
ThePY291Aisavailablein24-pin300milCeramicDIPs  
(CERDIP, Windowed and Non-Windowed) and Plastic  
DIPs (Non-Windowed).  
FUNCTIONAL BLOCK DIAGRAM  
PIN CONFIGURATION  
DIP (P4, D4, WD1)  
Note: Window on WD1 package only  
Document # EPROM101 REV OR  
Revised June 2007  
1
PY291A  
MAXIMUM RATINGS(1)  
Symbol  
TA  
Parameter  
Value  
Unit  
Symbol  
Parameter  
Value  
Unit  
Operating Temperature –55 to +125 °C  
VCC  
Power Supply Pin with  
Respect to GND  
–0.5 to +7  
V
TBIAS  
Temperature Under  
Bias  
–55 to +125  
°C  
Terminal Voltage with  
Respect to GND  
(up to 7.0V)  
–0.5 to  
VCC +0.5  
VTERM  
VPP  
V
V
TSTG  
PT  
Storage Temperature  
Power Dissipation  
DC Output Current  
–65 to +150  
°C  
W
1.0  
50  
Program Voltage  
13  
IOUT  
mA  
CAPACITANCES(4)  
(VCC = 5.0V, TA = 25°C, f = 1.0MHz)  
RECOMMENDED OPERATING CONDITIONS  
(2)  
Grade  
Ambient Temp  
Gnd  
Vcc  
Symbol  
CIN  
Parameter  
Conditions Typ. Unit  
Commercial  
0°C to 70°C  
0V 5.0V ±10%  
0V 5.0V ±10%  
Input Capacitance VIN = 0V  
Output Capacitance VOUT= 0V  
10 pF  
10 pF  
Military  
-55°C to +125°C  
COUT  
DC ELECTRICAL CHARACTERISTICS  
Over recommended operating temperature and supply voltage(2)  
PY291A  
Symbol  
Parameter  
Test Conditions  
Unit  
Min  
Max  
Input High Voltage  
2.0  
VCC  
VIH  
V
V
V
VIL  
VHC  
VLC  
Input Low Voltage  
–0.5(3)  
0.8  
VCC –0.2  
VCC +0.5  
CMOS Input High Voltage  
CMOS Input Low Voltage  
–0.5(3)  
0.2  
0.4  
V
V
Output Low Voltage (TTL Load) IOL = +16 mA, VCC = Min.  
VOL  
VOH  
Output High Voltage (TTL Load) IOH = –4 mA, VCC = Min.  
2.4  
V
VCC = Max.  
Input Leakage Current  
ILI  
–10  
+10  
+10  
µA  
VIN = GND to VCC  
VCC = Max., CE = VIH,  
Output Leakage Current  
µA  
ILO  
–10  
12  
VOUT = GND to VCC  
Programming Supply Voltage  
Programming Supply Current  
Input HIGH Programming Voltage  
Input LOW Programming Voltage  
13  
50  
V
mA  
V
VPP  
IPP  
VIHP  
VILP  
3.0  
0.4  
V
POWER DISSIPATION CHARACTERISTICS VS. SPEED  
Symbol  
Parameter  
Temperature Range  
Commercial  
Military  
–20  
–25  
–35  
–50  
Unit  
120  
N/A  
90  
90  
90  
90  
90  
mA  
mA  
ICC  
Dynamic Operating Current*  
N/A  
Document # EPROM101 REV OR  
Page 2 of 9  
PY291A  
AC ELECTRICAL CHARACTERISTICS—READ CYCLE  
(VCC = 5V ± 10%, All Temperature Ranges)(2)  
-20  
Min Max  
-25  
Min Max  
-35  
Min Max  
-50  
Min Max  
Symbol  
Parameter  
Address to Output Valid  
Unit  
tAA  
20  
25  
35  
50  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
tHZCS1 Chip Select Inactive to High Z  
tACS1 Chip Select Active to Output Valid  
tHZCS2 Chip Select Inactive to High Z  
15  
15  
20  
20  
15  
15  
20  
20  
22  
27  
35  
45  
tACS2  
tPU  
Chip Select Active to Output Valid  
Chip Select Active to Power-Up  
Chip Slect Inactive to Power-Down  
22  
27  
35  
45  
0
0
0
0
tPD  
22  
27  
35  
45  
TIMING WAVEFORM OF READ CYCLE  
Notes:  
1. Stresses greater than those listed under 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 MAXIMUM rating conditions for extended  
periods may affect reliability.  
2. Extended temperature operation guaranteed with 400 linear feet per  
minute of air flow.  
3. Transient inputs with VIL and IIL not more negative than –3.0V and  
–100mA, respectively, are permissible for pulse widths up to 20ns.  
4. This parameter is sampled and not 100% tested.  
Document # EPROM101 REV OR  
Page 3 of 9  
PY291A  
DEVICE ERASURE  
25 Wsec/cm2. If using a UV lamp of 12 mW/cm2, the  
exposure time is estimated to be 35 minutes. Devices  
should be positioned within 1 inch of the lamp during the  
erasure process. Permanent damage can occur to the  
devices if exposed to UV light for an extended period of  
time.  
If the device is subjected to wavelengths of light below  
4000 Angstroms, device erasure will commence. It is  
thereforerecommendedtouseanopaquelabeloverthe  
windowintheeventthedevicewillbeexposedtolighting  
for a long time. The UV dose for erasure requires a  
wavelength of 2,537 Angstroms for a minimum dose of  
MODE SELECTION  
Pin Function  
Read or Output Disable  
Other  
A10-A0  
CS3  
PGM  
VIH  
CS2  
VFY  
VIH  
O7-O0  
D7-D0  
O7-O0  
High Z  
High Z  
High Z  
D7-D0  
O7-O0  
High Z  
D7-D0  
Zeros  
CS1  
VPP  
VIL  
VIH  
X
Mode  
A10-A0  
A10-A0  
A10-A0  
A10-A0  
A10-A0  
A10-A0  
A10-A0  
A10-A0  
A10-A0  
A10-A0  
Read  
Output Disable  
Output Disable  
Output Disable  
Program  
X
X
X
VIL  
VIL  
X
X
VILP  
VIHP  
VIHP  
VILP  
VIHP  
VIHP  
VILP  
VIHP  
VIHP  
VILP  
VPP  
VPP  
VPP  
VPP  
VPP  
Program Verify  
Program Inhibit  
Intelligent Program  
Blank Check Zeros  
X = Don't Care  
PROGRAMMING PINOUTS  
Document # EPROM101 REV OR  
Page 4 of 9  
PY291A  
AC TEST CONDITIONS  
Input Pulse Levels  
GND to 3.0V  
Input Rise and Fall Times  
Input Timing Reference Level  
Output Timing Reference Level  
Output Load  
3ns  
1.5V  
1.5V  
See Figures 1 and 2  
Figure 1. Output Load  
Figure 2. Thevenin Equivalent  
* including scope and test fixture.  
Note:  
Because of the ultra-high speed of the PY291A, care must be taken  
when testing this device; an inadequate setup can cause a normal  
functioning part to be rejected as faulty. Long high-inductance leads that  
cause supply bounce must be avoided by bringing the VCC and ground  
planes directly up to the contactor fingers. A 0.01 µF high frequency  
capacitor is also required between VCC and ground.  
Document # EPROM101 REV OR  
Page 5 of 9  
PY291A  
ORDERING INFORMATION  
SELECTION GUIDE  
The PY291A is available in the following temperature, speed and package options.  
Speed (ns)  
Temperature  
Range  
Package  
Plastic DIP  
20  
-20PC  
N/A  
25  
35  
50  
Commercial  
-25PC  
N/A  
-35PC  
-50PC  
Military  
Temperature  
Windowed CERDIP  
-35WM  
-35DM  
-35WMB  
-35DMB  
-50WM  
-50DM  
-50WMB  
-50DMB  
Non-Windowed CERDIP  
Windowed CERDIP  
N/A  
N/A  
Military  
Processed*  
N/A  
N/A  
Non-Windowed CERDIP  
N/A  
N/A  
* Military temperature range with MIL-STD-883, Class B processing.  
N/A = Not Available  
Document # EPROM101 REV OR  
Page 6 of 9  
PY291A  
CERAMIC DUAL IN-LINE PACKAGE (NON-WINDOWED)  
Pkg #  
D4  
# Pins  
24 (300 mil)  
Symbol  
Min  
-
0.014  
0.045  
0.008  
-
Max  
A
b
b2  
C
D
E
0.200  
0.026  
0.065  
0.018  
1.280  
0.310  
0.220  
eA  
e
0.300 BSC  
0.100 BSC  
L
0.125  
0.200  
0.060  
-
Q
S1  
α
0.015  
0.005  
0°  
15°  
CERAMIC DUAL IN-LINE PACKAGE (WINDOWED)  
Pkg #  
WD1  
# Pins  
24 (300 mil)  
Symbol  
Min  
-
0.014  
0.045  
0.008  
-
Max  
A
b
b2  
C
D
E
0.200  
0.026  
0.065  
0.018  
1.280  
0.310  
0.220  
eA  
e
0.300 BSC  
0.100 BSC  
L
Q
S1  
0.125  
0.200  
0.060  
-
0.015  
0.005  
0°  
15°  
WD  
0.175  
Document # EPROM101 REV OR  
Page 7 of 9  
PY291A  
PLASTIC DUAL IN-LINE PACKAGE  
Pkg #  
P4  
# Pins  
24 (300 Mil)  
Symbol  
Min  
-
Max  
0.210  
-
0.022  
0.070  
0.014  
1.280  
0.280  
0.325  
A
A1  
b
b2  
C
D
E1  
E
0.015  
0.014  
0.045  
0.008  
1.230  
0.240  
0.280  
e
0.100 BSC  
eB  
L
α
-
0.430  
0.160  
15°  
0.115  
0°  
Document # EPROM101 REV OR  
Page 8 of 9  
PY291A  
REVISIONS  
DOCUMENT NUMBER:  
DOCUMENT TITLE:  
EPROM101  
PY291A 2K x 8 REPROGRAMMABLE PROM  
ORIG. OF  
CHANGE  
ISSUE  
REV.  
DESCRIPTION OF CHANGE  
DATE  
OR  
Jun-2007  
JDB  
New Data Sheet  
Document # EPROM101 REV OR  
Page 9 of 9  
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