PY291A 2K x 8 rEpROGRAMMABLE prom FEATURES EPROM Technology for reprogramming Windowed devices for reprogramming High Speed – 20/25/35/50 ns (Commercial) – 25/35/50 ns (Industrial) – 35/50 ns (Military) Fully TTL Compatible Inputs and Outputs Standard Pinout (JEDEC Approved) Low Power Operation: 660 mW Single 5V±10% Power Supply – 24-Pin 300 mil DIP – Windowed CERDIP – Non-Windowed CERDIP – Non-Windowed Plastic DIP DESCRIPTION The PY291A is a 2Kx8 CMOS PROM. The device is available in windowed packages which when exposed to UV light, the memory content in the PROM is erased and can be reprogrammed. EPROM technology is used in the memory cells for programming. The EPROM requires 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. and CS2 and CS3 are HIGH. The memory contents in the address established by the Address pins (A0 to A10) will become available on the outputs (O0 to O7). The PY291A is available in 24-pin 300 mil Ceramic DIPs (CERDIP, Windowed and Non-Windowed) and Plastic DIPs (Non-Windowed). To perform a read operation from the device, CS1 is LOW Functional Block Diagram Pin Configuration DIP (P4, D4, WD1) Note: Window on WD1 package only Document # EPROM101 REV 01 1 Revised March 2010 PY291A Maximum Ratings(1) Symbol Parameter ValueUnit VCC Power Supply Pin with Respect to GND –0.5 to +7 V VTERM Terminal Voltage with Respect to GND (up to 7.0V) –0.5 to VCC +0.5 V VPP Program Voltage 13 V RECOMMENDED OPERATING CONDITIONS Grade(2) Commercial Ambient Temp Gnd Vcc 0°C to +70°C 0V 5.0V ±10% Industrial -40°C to +85°C 0V 5.0V ±10% Military -55°C to +125°C 0V 5.0V ±10% Symbol Parameter ValueUnit TA Operating Temperature –55 to +125 °C TBIAS Temperature Under Bias –55 to +125 °C TSTG Storage Temperature –65 to +150 °C PT Power Dissipation 1.0 W IOUT DC Output Current 50 mA CAPACITANCES(4) (VCC = 5.0V, TA = 25°C, f = 1.0MHz) Symbol Parameter Conditions Typ.Unit CIN Input Capacitance VIN = 0V 10 pF COUT Output Capacitance VOUT= 0V 10 pF DC ELECTRICAL CHARACTERISTICS Over recommended operating temperature and supply voltage(2) Symbol Parameter PY291A Min Max Test Conditions Unit VIH Input High Voltage 2.0 VCC V VIL Input Low Voltage –0.5 0.8 V VHC CMOS Input High Voltage VCC –0.2 VCC +0.5 V VLC CMOS Input Low Voltage –0.5(3) 0.2 0.4 V V VOL Output Low Voltage (TTL Load) IOL = +16 mA, VCC = Min. VOH Output High Voltage (TTL Load) IOH = –4 mA, VCC = Min. ILI Input Leakage Current ILO Output Leakage Current VPP Programming Supply Voltage IPP Programming Supply Current 2.4 VCC = Max. VIN = GND to VCC VCC = Max., CE = VIH, VOUT = GND to VCC VIHP Input HIGH Programming Voltage VILP Input LOW Programming Voltage (3) V –10 +10 µA –10 +10 µA 12 13 V 50 mA V 3.0 0.4 V POWER DISSIPATION CHARACTERISTICS VS. SPEED Symbol Parameter ICC Dynamic Operating Current* Document # EPROM101 REV 01 Temperature Range –20 –25 –35 –50 Unit Commercial 120 90 90 90 mA Industrial Military N/A N/A 90 N/A 90 90 90 90 mA mA Page 2 of 9 PY291A AC ELECTRICAL CHARACTERISTICS—READ CYCLE (VCC = 5V ± 10%, All Temperature Ranges)(2) Symbol Parameter -20 Min -25 Max Min -35 Max Min -50 Max Min Max Unit tAA Address to Output Valid 20 25 35 50 ns tHZCS1 Chip Select Inactive to High Z 15 15 20 20 ns tACS1 Chip Select Active to Output Valid 15 15 20 20 ns tHZCS2 Chip Select Inactive to High Z 22 27 35 45 ns tACS2 Chip Select Active to Output Valid 22 27 35 45 ns tPU Chip Select Active to Power-Up tPD Chip Slect Inactive to Power-Down 0 0 22 0 27 0 35 ns 45 ns 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. Document # EPROM101 REV 01 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 20 ns. 4.This parameter is sampled and not 100% tested. Page 3 of 9 PY291A DEVICE ERASURE If the device is subjected to wavelengths of light below 4000 Angstroms, device erasure will commence. It is therefore recommended to use an opaque label over the window in the event the device will be exposed to lighting for a long time. The UV dose for erasure requires a wavelength of 2,537 Angstroms for a minimum dose of 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. MODE SELECTION Pin Function Read or Output Disable A10-A0 CS3 CS2 CS1 O7-O0 Other A10-A0 PGM VFY VPP D7-D0 Read A10-A0 VIH VIH VIL O7-O0 Output Disable A10-A0 X X VIH High Z Output Disable A10-A0 X VIL X High Z Output Disable A10-A0 VIL X X High Z Program A10-A0 VILP VIHP VPP D7-D0 Program Verify A10-A0 VIHP VILP VPP O7-O0 Program Inhibit A10-A0 VIHP VIHP VPP High Z Intelligent Program A10-A0 VILP VIHP VPP D7-D0 Blank Check Zeros A10-A0 VIHP VILP VPP Zeros Mode X = Don't Care PROGRAMMING PINOUTS Document # EPROM101 REV 01 Page 4 of 9 PY291A AC Test Conditions Input Pulse Levels GND to 3.0V Input Rise and Fall Times 3ns Input Timing Reference Level 1.5V Output Timing Reference Level 1.5V Output Load 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 Document # EPROM101 REV 01 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. Page 5 of 9 PY291A Ordering Information Document # EPROM101 REV 01 Page 6 of 9 PY291A CERAMIC DUAL IN-LINE PACKAGE (NON-WINDOWED) Pkg # D4 # Pins 24 (300 mil) Symbol Min Max A - 0.200 b 0.014 0.026 b2 0.045 0.065 C 0.008 0.018 D - 1.280 E 0.220 0.310 eA e 0.300 BSC 0.100 BSC L 0.125 0.200 Q 0.015 0.060 S1 α 0.005 - 0° 15° CERAMIC DUAL IN-LINE PACKAGE (WINDOWED) Pkg # WD1 # Pins 24 (300 mil) Symbol Min Max A - 0.200 b 0.014 0.026 b2 0.045 0.065 C 0.008 0.018 D - 1.280 E 0.220 0.310 eA 0.300 BSC e 0.100 BSC L 0.125 0.200 Q 0.015 0.060 S1 α 0.005 - 0° 15° WD 0.175 Document # EPROM101 REV 01 Page 7 of 9 PY291A PLASTIC DUAL IN-LINE PACKAGE Pkg # P4 # Pins 24 (300 Mil) Symbol Min Max A - 0.210 A1 0.015 - b 0.014 0.022 b2 0.045 0.070 C 0.008 0.014 D 1.230 1.280 E1 0.240 0.280 E 0.280 0.325 e 0.100 BSC eB - 0.430 L 0.115 0.160 α 0° 15° Document # EPROM101 REV 01 Page 8 of 9 PY291A REVISIONS DOCUMENT NUMBER EPROM101 DOCUMENT TITLE PY291A 2K x 8 REPROGRAMMABLE PROM REV ISSUE DATE ORIGINATOR OR Jun-2007 JDB New Data Sheet 01 Mar-2010 JDB Added Industrial Temperature Range Document # EPROM101 REV 01 DESCRIPTION OF CHANGE Page 9 of 9