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Generally electronic data sheets provide you with nearly all of the information necessary to use a particular electonic device. Pay particular attention to the maximimum limits as presented in the electronic data sheet especially, maximum DC supply, maximum input levels and maximum loads where applicable.
I have arranged the listing of electronic data sheets in alpha-numerical order by manufacturer.
Note added 1st January, 2002
I've been told some of these data sheets are no longer available from the manufacturers, in particular the 4.7 Meg AN980 file from Motorola. The best suggestion I have is here which is written below.
The MC12149 is intended for applications requiring high frequency signal generation up to 1300 MHz. An external tank circuit is used to determine the desired frequency of operation. The VCO is realized using an emitter–coupled pair topology. The MC12149 can be used with an integrated PLL IC such as the MC12202 1.1 GHz Frequency Synthesizer to realize a complete PLL sub–system. The device is specified to operate over a voltage supply range of 2.7 to 5.5 V. It has a typical current consumption of 15 mA at 3.0 V which makes it attractive for battery operated handheld systems.
Data Sheet Page: MC12149 data sheet 198K
NOTE: - This site does NOT support resume downloads.
The MC12181 is a monolithic bipolar synthesizer integrating a high performance prescaler, programmable divider, phase/frequency detector, charge pump, and reference oscillator/buffer functions. The device is capable of synthesizing a signal which is 25 to 40 times the input reference signal. The device has a 4–bit parallel interface to set the proper total multiplication which can range from 25 to 40. When combined with an external passive loop filter and VCO, the MC12181 serves as a complete PLL subsystem.
2.7 to 5.5 V Operation
Low power supply current of 4.25 mA typical
On chip reference oscillator/buffer supporting wide frequency operating range from 5 to 25 MHz
4–bit parallel interface for programming divider (N = 25 .... 40)
Wide 125 – 1000 MHz frequency of operation
Digital phase/frequency detector with linear transfer function
Balanced Charge Pump Output
Space efficient 16 lead SOIC package
Operating Temperature Range of –40 to 85°C
> 1000 V ESD Protection (I/O to Ground, I/O to V CC )
The device is suitable for applications where a fixed local oscillator (LO) needs to be synthesized or where a limited number of LO frequencies need to be generated. The device also has auxiliary open emitter outputs (Pout and Rout) for observing the inputs to the phase detector for verification purposes. In normal use the pins should be left open. The Reset input is normally LOW. When this input is placed in the HIGH state the reference prescaler is reset and the charge pump output (Do) is placed in the OFF state.
The 4–bit programming interface maps into divider states ranging from 25 to 40. A is the LSB and D is the MSB. The data inputs (A,B,C, and D) are CMOS compatible and have pull–up resistors. The inputs can be tied directly to Vcc or Ground for programming or can be interfaced to an external data latch/register. see data sheet for Table 1 having a mapping of the programming states.
Let me know if you have problems downloading the data sheet. Note - see comments further down.
Data Sheet: MC12181 data sheet 110K
NOTE: - This site does NOT support resume downloads.
The MC1451522 is programmed by sixteen parallel inputs for the N and A counters and three input lines for the R counter. The device features consist of a reference oscillator, selectable reference divider, two output phase detector, 10 bit programmable divide by N counter, and 6 bit programmable ÷ A counter.
Operating Temperature Range: -40 to 85°C
Low Power Consumption Through Use of CMOS Technology
3.0 to 9.0 V Supply Range
On or Off Chip Reference Oscillator Operation
Lock Detect Signal
Dual Modulus/Parallel Programming
8 User Selectable ÷ R Values: 8, 64, 128, 256, 512, 1024, 1160, 2048
÷ N Range = 3 to 1023, ÷ A Range = 0 to 63
Chip Complexity: 8000 FETs or 2000 Equivalent Gates
Data Sheet: PLL Frequency Synthesiser family MC145152 to MC145158 419K
Additionally see companion application note 980 for examples of single channel VHF FM narrowband receiver, ten channel frequency synthesized cordless telephone receiver, 256 channel frequency synthesized two meter amateur band receiver, single chip weatherband receiver and MC3362 application as a tunable weather band receiver.
The 602 is a low-power VHF monolithic double-balanced mixer with input amplifier, on-board oscillator, and voltage regulator. It is intended for high performance, low power communication systems. The guaranteed parameters of the SA602A make this device particularly well suited for cellular radio applications. The mixer is a Gilbert cell multiplier configuration which typically provides 18dB of gain at 45MHz. The oscillator will operate to 200MHz. It can be configured as a crystal oscillator, a tuned tank oscillator, or a buffer for an external LO. For higher frequencies the LO input may be externally driven. The noise figure at 45MHz is typically less than 5dB. The gain, intercept performance, low-power and noise characteristics make the SA602A a superior choice for high-performance battery operated equipment.
Data Sheet: 602 mixer data sheet - (109K) in PDF format.
The 555 timer is one of the most remarkable integrated circuits ever developed. It comes in a single or dual package and even low power cmos versions exist - ICM7555. Common part numbers are LM555, NE555, LM556, NE556. The 555 timer consists of two voltage comparators, a bi-stable flip flop, a discharge transistor, and a resistor divider network. The 555 timer is ideal for astable free running oscillators as well as the one shot monostable mode
Data Sheet: 555 timer data sheet - (120K) in PDF format.
Dual retriggerable precision monostable multivibrator 74HC/HCT4538
· Separate reset inputs
· Triggering from leading or trailing edge
· Output capability: standard
· Power-on reset on-chip
GENERAL DESCRIPTION - The 74HC/HCT4538 are high-speed Si-gate CMOS devices and are pin compatible with “4538” of the “4000B” series. They are specified in compliance with JEDEC standard no. 7A. The 74HC/HCT4538 are dual retriggerable-resettable monostable multivibrators. Each multivibrator has an active LOW trigger/retrigger input (nA0 ), an active HIGH trigger/retrigger input (nA1 ) , an overriding active LOW direct reset input (nRD ), an output (nQ) and its complement (nQ), and two pins (nCTC and nRCTC ) for connecting the external timing components Ct and Rt .
Typical pulse width variation over temperature range is ± 0.2%.
The “4538” may be triggered by either the positive or the negative edges of the input pulse. The duration and accuracy of the output pulse are determined by the external timing components Ct and Rt . The output pulse width (T) is equal to 0.7 ´ Rt ´ Ct . The linear design techniques guarantee precise control of the output pulse width. A LOW level at nRD terminates the output pulse immediately. Schmitt-trigger action in the trigger inputs makes the circuit highly tolerant to slower rise and fall times.
Data Sheet: 74HC/HCT4538 data sheet - (142K) in PDF format.
Phase-locked-loop with VCO
The 74HC/HCT4046A are high-speed Si-gate CMOS devices and are pin compatible with the “4046” of the “4000B” series. They are specified in compliance with JEDEC standard no. 7A.
The 74HC/HCT4046A are phase-locked-loop circuits that comprise a linear voltage-controlled oscillator (VCO) and three different phase comparators (PC1, PC2 and PC3) with a common signal input amplifier and a common comparator input.
The signal input can be directly coupled to large voltage signals, or indirectly coupled (with a series capacitor) to small voltage signals. A self-bias input circuit keeps small voltage signals within the linear region of the input amplifiers. With a passive low-pass filter, the “4046A” forms a second-order loop PLL. The excellent VCO linearity is achieved by the use of linear op-amp techniques.
The VCO requires one external capacitor C1 (between C1A and C1B) and one external resistor R1 (between R1 and GND) or two external resistors R1 and R2 (between R1 and GND, and R2 and GND). Resistor R1 and capacitor C1 determine the frequency range of the VCO. Resistor R2 enables the VCO to have a frequency offset if required.
Data Sheet: 74HC/HCT4046 data sheet - (443K) in PDF format.
10W CAR RADIO AUDIO AMPLIFIER
According to the data sheet, the TDA 2003 has improved performance with the same pin configuration as the TDA 2002.
The additional features of TDA 2002, very low number of external components, ease of assembly, space and cost saving, are maintained. The device provides a high out output current capability (up to 3.5A) very low harmonic and cross-over distortion.
Data Sheet: TDA2003 data sheet - (153K) in PDF format.
This data sheet is for the plastic version of this old work horse transistor. See all the specs. The 2N2222A is featured in many transistor tutorials on this site. It's dirt cheap and is usable from DC to up to RF of up to say 15 Mhz.
Data Sheet: P2N2222A - plastic bipolar transistor 238K
The MPF-102 is another old workhorse transistor. This is a popular J-FET transistor.
Data Sheet: MPF-102 J-FET 270K
An excellent site, quite comprehensive.
And another new one [21/12/05]:
http://www.datasheets.org.uk Search by part number or description.
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602 mixer data sheet - (109K) in PDF format.
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Bibliography: - Philips Semiconductors - Semiconductors for Wireless Communications 1999 - IC17
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Updated 25th March, 2002