| nr | name | cat | description | manufacturer | 
| 52 | UT52 | dram,sdram | SDRAM*, see www.utron.com.tw/dram.htm | UTRON | 
| 520 | TCA520B | amp | Low-power/low-voltage opamp, DIL8 | Philips | 
| 520 | TCA520D | opamp | Opamp SMD | order from Barend | 
| 520 | TCA520D | amp | Low-power/low-voltage opamp | Philips | 
| 5200 | NE5200 | amp | dual gain stage RF amplifier | Philips | 
| 5200 | NE5200D | amp | Dual* wideband amp in SO8 (smd) | order from Barend | 
| 5200 | SA5200 | amp | dual gain stage RF amplifier | Philips | 
| 5203 | AD5203 | potmeter | 4-Channel, 64-Position Digital Potentiometer, data | AD | 
| 5204 | 5204A | eprom | 512*8 EPROM* 750ns | NS | 
| 5204 | NE5204A | amp | 350 MHz wide-band amplifier DIL8 | Philips | 
| 5204 | SA5204A | amp | 350 MHz wide-band amplifier DIL8 | Philips | 
| 5205 | MSM5205 | voice | ADPCM* Voice Synthesis LSI | Oki | 
| 5205 | NE5205A | amp | 600 MHz wide-band amplifier DIL8 | Philips | 
| 5205 | NE5205D | amp | Smt SO8 amp | order from Barend | 
| 5205 | SA5205A | amp | 600 MHz wide-band amplifier DIL8 | Philips | 
| 5205 | SE5205A | amp | 600 MHz wide-band amplifier DIL8 | Philips | 
| 5208 | IH5208 | anamux | See MAX359 | Maxim* | 
| 5209 | NE5209 | amp | 850 MHz variable gain amplifier DIL16 | Philips | 
| 5209 | NE5209D |  | Linear broadband RF Amplifier, pinout | Philips Semiconductor | 
| 5209 | SA5209 | amp | 850 MHz variable gain amplifier DIL16 | Philips | 
| 521 | NE521 | cmp | High-speed dual differential comparator/sense amplifier DIL14, CERDIP14 | Philips | 
| 521 | SE521 | cmp | High-speed dual differential comparator/sense amplifier CERDIP14 | Philips | 
| 5210 | NE5210 | amp | 280 MHz transimpedance amplifier | Philips | 
| 5211 | NE5211 | amp | 180 MHz transimpedance amplifier | Philips | 
| 5211 | SA5211 | amp | 180 MHz transimpedance amplifier | Philips | 
| 5212 | NE5212A | amp | 140 MHz transimpedance amplifier DIL8, CERDIP8 | Philips | 
| 5212 | SA5212A | amp | 140 MHz transimpedance amplifier DIL8, CERDIP8 | Philips | 
| 5212 | SE5212A | amp | 140 MHz transimpedance amplifier DIL8, CERDIP8 | Philips | 
| 5214 | NE5214 | amp | Fibre-optic post-amplifier | Philips | 
| 5214 | SA5214 | amp | Fibre-optic post-amplifier | Philips | 
| 5217 | NE5217 | amp | Fibre-optic post-amplifier | Philips | 
| 5217 | SA5217 | amp | Fibre-optic post-amplitier | Philips | 
| 5218 | IMP5218CDW |  | Non-linear SCSI Terminator, pinout | IMP, Inc. | 
| 5218 | IMP5218CPW |  | Non-linear SCSI Terminator, pinout | IMP, Inc. | 
| 5219 | NE5219 | amp | 700 MHz variable gain amplifier DIL16 | Philips | 
| 5219 | SA5219 | amp | 700 MHz variable gain amplifier DIL16 | Philips | 
| 522 | NE522 | cmp | High-speed dual differential comparator/sense amplifier DIL14 | Philips | 
| 522 | NE522 | cmp | dual high speed comparator 7.5ns | Signetics | 
| 5220 | SPT5220 | dac | 10-bit video DAC 80 MSPS | SPT | 
| 5222 | SA5222 | amp | Low-power FDDI transimpedance amplifier | Philips | 
| 5222 | sec5222 | led | led 2 dig white/green hi o/p | Senior | 
| 5223 | SA5223 | amp | Wide-dynamic-range AGC* | Philips | 
| 5224 | NE5224 | amp | FDDI fibre-optic post-amplifier | Philips | 
| 5224 | SA5224 | amp | FDDI fibre-optic post-amplifier | Philips | 
| 5225 | NE5225 | amp | FDDI fibre-optic post-amplifier | Philips | 
| 5225 | SA5225 | amp | FDDI fibre-optic post-amplifier | Philips | 
| 52256 | LH52256 | sram | 32K*8 SRAM* | Sharp | 
| 5230 | NE5230 | amp | Low-voltage opamp DIL8 | Philips | 
| 5230 | SA5230 | amp | Low-voltage opamp DIL8, CERDIP8 | Philips | 
| 5231 | SAA5231 | tv | Teletext video processor | Philips* | 
| 5231 | SAA5231 | tv | Teletext video processor DIL28 | Philips | 
| 5231 | SDA5231-5 | tv | Teletext Data Slicer | Siemens | 
| 5231000 | M5M231000 | eprom | EPROM* interactive algorithm Vpp*=5.0V, Vcc*=6.0V | Mitsubishi | 
| 5232 | M5232P | uart | Multiple RS-232 Drivers and Receivers | ALi* | 
| 5233 | SAA5233 | tv | VPS/PDC decoder DIL16 | Philips | 
| 5234 | NE5234 | amp | quad low-voltage opamp DIL14 | Philips | 
| 5234 | SA5234 | amp | quad low-voltage opamp DIL14 | Philips | 
| 524 | AD524 | amp | Precision Monolithic Instrumentation Amplifier, data | AD | 
| 524 | RGB524 | video | RGB Series Palette DAC, Data | IBM* | 
| 5240 | SAA5240A | i2c | I2C chip | Philips* | 
| 5240 | SAA5240B | i2c | I2C chip | Philips* | 
| 5240 | SAA5240C | i2c | I2C chip | Philips* | 
| 5240 | SAA5240D | i2c | I2C chip | Philips* | 
| 5240 | SAA5240F | i2c | I2C chip | Philips* | 
| 5240 | SAA5240P | i2c | I2C chip | Philips* | 
| 5241 | SAA5241A | i2c | I2C chip | Philips* | 
| 5241 | SAA5241B | i2c | I2C chip | Philips* | 
| 5241605 | HM5241605 | dram | 128k*16*2 SDRAM* | Hitachi | 
| 5243 | SAA5243 | tv,i2c | I2C-bus enhanced computer controlled 25*40 teletext circuit, 625-line system | Philips* | 
| 5243 | SAA5243E | i2c | I2C chip | Philips* | 
| 5243 | SAA5243E | tv | Computer-controlled teletext circuit DIL40 | Philips | 
| 5243 | SAA5243H | i2c | I2C chip | Philips* | 
| 5243 | SAA5243H | tv | Computer-controlled teletext circuit DIL40 | Philips | 
| 5243 | SAA5243K | i2c | I2C chip | Philips* | 
| 5243 | SAA5243L | i2c | I2C chip | Philips* | 
| 5243 | SAA5243L | tv | Computer-controlled teletext circuit DIL40 | Philips | 
| 5243 | SAA5243P | i2c | I2C chip | Philips* | 
| 5243 | SAA5243R | tv | Computer-controlled teletext circuit DIL40 | Philips | 
| 5243 | SAA5243T | tv | Computer-controlled teletext circuit DIL40 | Philips | 
| 5244 | QS5244 | buffer | Low Skew CMOS* 8-Bit Buffers / Line Drivers | QS | 
| 5244 | SAA5244 | i2c | I2C chip | Philips* | 
| 5244 | SAA5244A | tv | Integrated VIP and teletext DIL40, DIL42SHR | Philips | 
| 5245 | SAA5245 | i2c | I2C chip | Philips* | 
| 5246 | SAA5246 | i2c | I2C chip | Philips* | 
| 5246 | SAA5246A | tv | Integrated VIP and teletext (IVT1.0) | Philips* | 
| 5246 | SAA5246AE | tv | Integrated VIP and teletext DIL48, DIL52SHR | Philips | 
| 5246 | SAA5246AH | tv | Integrated VIP and teletext DIL48, DIL52SHR | Philips | 
| 5246 | SAA5246AI | tv | Integrated VIP and teletext DIL48, DIL52SHR | Philips | 
| 5246 | SAA5246AJ | tv | Integrated VIP and teletext DIL48, DIL52SHR | Philips | 
| 5246 | SAA5246AK | tv | Integrated VIP and teletext DIL48, DIL52SHR | Philips | 
| 5246 | SAA5246AL | tv | Integrated VIP and teletext DIL48, DIL52SHR | Philips | 
| 5246 | SAA5246AS | tv | Integrated VIP and teletext DIL48, DIL52SHR | Philips | 
| 5246 | SAA5246AT | tv | Integrated VIP and teletext DIL48, DIL52SHR | Philips | 
| 5248 | MSM5248 | voice | Voice Synthesis LSI with Built-in ROM | Oki | 
| 5248 | SAA5248E | tv | Teletext and VPS decoder DIL52SHR | Philips | 
| 5248 | SDA5248-5 | dram | Multipage Teletext Decoder | Siemens | 
| 5249 | SAA5249 | tv | Integrated VIP and teletext with Background Memory controller (IVT1.1BMCX) | Philips* | 
| 5249 | SAA5249E | tv | Integrated VIP and teletext DIL48 | Philips | 
| 5249 | SAA5249H | tv | Integrated VIP and teletext DIL48 | Philips | 
| 5249 | SAA5249T | tv | Integrated VIP and teletext DIL48 | Philips | 
| 525 | 525demo |  | www.icst.com/pdf/525demo.pdf | ICS* | 
| 525 | RGB525 | video | RGB Series Palette DAC, Data | IBM* | 
| 5250 | SAA5250 | tv | Interface for data acquisition and control (for multi-standard teletext systems) | Philips* | 
| 5250 | SAA5250 | tv | Multistandard teletext control interface DIL40 | Philips | 
| 5250102 | ics5250102 |  | www.icst.com/pdf/ics5250102.pdf | ICS* | 
| 5251 | M5251 | bus | P1394 OHCI controller | ALi* | 
| 5252 | SAA5252 | i2c | I2C chip | Philips* | 
| 5252 | SAA5252 | tv | Line 21 decoder DIL24 | Philips | 
| 5254 | SAA5254 | tv | Integrated VIP and teletext decoder (IVT1.1X) | Philips* | 
| 5254 | SAA5254E | tv | Integrated VIP and teletext DIL40 | Philips | 
| 5254 | SAA5254H | tv | Integrated VIP and teletext DIL40 | Philips | 
| 5254 | SAA5254T | tv | Integrated VIP and teletext DIL40 | Philips | 
| 52568 | 5C2568 | sram | 32K*8 cache SRAM* | Micron* | 
| 52568 | MT5C2568 | sram | 32K*8 SRAM* | Micron | 
| 526 | AD526 | amp | Software Programmable Gain Amplifier, data | AD | 
| 526 | ADG526A |  | Test Circuits, data | AD | 
| 526 | RGB526 | video | RGB Series Palette DAC, Data | IBM* | 
| 5268 | LH5268HN-10L | sram | Sounds much like some 100ns 64kbit SRAM* (8kx8) | 
| 527 | ADG527A |  | (null), data | AD | 
| 527 | NE527 | cmp | Voltage comparator DIL14 | Philips | 
| 5270 | SAA5270 | tv | Teletext and OSD decoder | Philips | 
| 52701 | ics52701 |  | www.icst.com/pdf/ics52701.pdf | ICS* | 
| 5273 | SDA5273 | dram | Megatext | Siemens | 
| 5273 | SDA5273P | dram | Megatext | Siemens | 
| 528 | ADG528A |  | (null), data | AD | 
| 528 | ADG528F | mux | 4/8 Channel Fault-Protected Analog Multiplexers, data | AD | 
| 528 | MAX528 | dac,spi | DAC, 8-bit 8-channel with buffered outputs & bipolar references | Maxim | 
| 528 | RGB528 | video | RGB Series Palette DAC, Data | IBM* | 
| 52805 | QS52805 | buffer | CMOS* Clock 10 Bit Low Skew Buffer, with series resistors | QS | 
| 52806 | QS52806 | buffer | CMOS* Clock 10 Bit Low Skew Buffer, Inverting, with series resistors | QS | 
| 5281 | SAA5281 | tv | Integrated Video input processor and teletext decoder (IVT1.8*) | Philips* | 
| 5281 | SAA5281E | tv | Integrated video input processor/teletext decoder DIL48, DIL52SHR | Philips | 
| 5281 | SAA5281H | tv | Integrated video input processor/teletext decoder DIL48, DIL52SHR | Philips | 
| 5281 | SAA5281K | tv | Integrated video input processor/teletext decoder DIL48, DIL52SHR | Philips | 
| 5281 | SAA5281L | tv | Integrated video input processor/teletext decoder DIL48, DIL52SHR | Philips | 
| 5281 | SAA5281R | tv | Integrated video input processor/teletext decoder DIL48, DIL52SHR | Philips | 
| 5281 | SAA5281T | tv | Integrated video input processor/teletext decoder DIL48, DIL52SHR | Philips | 
| 529 | MAX529 | dac,spi | DAC, 8-bit 8-channel with buffered outputs & bipolar references | Maxim | 
| 529 | NE529 | cmp | Voltage comparator DIL14 | Philips | 
| 5290 | SAA5290 | tv | One-page Economy teletext/TV microcontroller (ETT1.1) | Philips* | 
| 5290 | SAA5290 | tv | One-chip tuning and text DIL52SHR | Philips |