IC Datasheets

I have compiled a list of the common devices I use at the Virginia Military Institute in my courses, independent study supervision, and research. All values listed in tables are typical; see linked datasheets for details.


An excellent general link for schematics is datasheets360.


device #1 input signal output signal chip power6
Imax2 Imax3 Vlow4 Vhigh5 Vmin Vmax
LM311 1 150nA 50mA 0.75V 50V 5V 36V
LM193 2 25nA 16mA 0.25V 30V 2V 36V
LM339 4 25nA 16mA 0.25V 36V 2V 36V


1. Number of comparators in one IC.
2. Maximmum input current. Ideally zero.
3. Maximum current that the output can sink. Ideally infinite. The devices are open-collector or open-drain and therefore cannot source any current.
4. How close to ground the output voltage can go. Ideally zero, often one diode drop above.
5. The maximum output voltage. Since comparators are open-collector or open-drain, the output is in a high-impedance state when the device is "on", so the output must be pulled up with a resistor. There is a maximum voltage that the output pin can be pulled up to without damaging the device.
6. The chip must be powered from supplies between these two extremes.

Digital to Analog Converters

device bits data1 Vlow2 Vhigh3 multiplying4 Tconversion
AD557 8 parallel 0V 2.56V no 1us
DAC03830 8 parallel -10V5 10V5 yes6 1us


1. The data bus may be serial or parallel loading.
2. The lowest possible voltage out, corresponding to an input of 00H.
3. The highest possible voltage out.
4. A multiplying D-A converter multiplies the analog output by a provided analog input. A 4 quadrant multiplier permits either the digital input or the analog multiplicand to be positive or negative. Usually the multiplier feature can be easily disabled if not desired.
5. The output may be either configured to be a current or a voltage signal, and may be adjusted to provide minimum and maximum outputs anywhere in the -10V to +10V range.
6. Four quadrant, -10V to +10V.


device Imax Vmax1 comments
1N4001 1A 50V power
1N4004 1A 400V power
1N914 200mA 100V small-signal (fast)


1. The maximum reverse voltage the diode can tolerate before it breaks down, ideally infinite.

Digital CMOS Logic

device # description
74AHC04 6 Inverter
74AHC14 6 Schmitt inverter1
74LS47 1 BCD to 7 segment decoder2
74AHC74 2 D flip-flop
74AHC125 4 Tristate 1-directional buffer
74AHC138 1 3 to 8 decoder
74AHC151 1 8 to 3 multiplexer
74AHC154 1 4 to 16 decoder
74AHC161 1 4 bit up counter with asynchronous clear
74AHC163 1 4 bit up counter with synchronous clear
74AHC164 1 8 bit parallel in, serial out shift register
74AHC165 1 8 bit serial in, parallel out shift register
74AHC241 8 Tristate 1-directional buffer
74AHC244 8 Tristate 1-directional buffer
74AHC245 8 Tristate 2-directional buffer
74AHC365 6 Tristate 1-directional buffer
74AHC374 8 D flip-flop
25120 1 Write-Only Memory (Very rare!)3
Other devices (external link)


1. Unlike conventional CMOS inputs that are designed to operate with relatively clean digital signals and suffer from output jitter and large current drains when faced with a non-logic input such as 2.5V, Schmitt inputs work well with analog inputs in the range of 0V to 5V, and display hysteresis.
2. OK, this is a TTL and not a CMOS chip, but since it accepts CMOS inputs and it outputs directly to an LED display it works fine in an otherwise-CMOS circuit.
3. Write-only memory can be written to, but not read from. This particular device has an excellent number-of-socket-insertions to number-of-pins-remaining characteristic.


Device SC/A1 Order2 Purpose3 Type4 Vin5 Fmin6 Fmax Comments
MAX274 A 8 BP, LP BW, BL, C1 ±5V 0Hz 150kHz
MAX280 SC 5 LP BW ±8V 0Hz 20kHz zero DC error
MAX291 SC 8 LP BW ±5V 0.1Hz 25kHz
MAX292 SC 8 LP BL ±5V 0.1Hz 25kHz
MAX295 295 8 LP BW ±5V 0.1Hz 50kHz  
MAX296 296 8 LP BL ±5V 0.1Hz 50kHz  
UAF42 A 6 all BW, BL, C1 ±15V 0Hz 100kHz See notes below7


1. Filters may be either of the switched-capacitor variety (need no supporting capacitors or resistors but do require a clock source and introduce some noise at the switching frequency) or analog variety.
2. The maximum possible order if all the chip is used to design a single filter. Many chips permit either a single high order filter or several lower-order filters to be constructed.
3. Lowpass, Highpass, Bandpass, or Bandstop.
4. Butterworth (BW), Bessel (BL), Chebyshev I (C1), Chebyshev II (C2), Elliptic (E).
5. The maximum supply, input, and output voltages. Usually these can be operated on a single-sided supply (e.g. 0-5V) if the input signal is given a DC offset (e.g. 2.5V).
6. Some filters have an uncontrolled DC offset. For these filters, Fmin is above the ideal 0Hz.
7. To calculate the external components to build a filter using the UAF42, Burr-Brown provides the excellent software program Filter42 for download and its associated documentation.

Instrumentation Amplifiers

device general Vpower input output
CMRR1 gain BW low high Ib Voff Zin Vswing limit2 Imax
AD620 110dB 1 to 1000 120kHz ±2.3V ±18V 0.5nA 75uV 10Gohm Vsupp±1.2V 18mA
AD621 110dB 10, 100 800kHz ±2.3V ±18V 0.5nA 75uV 10Gohm Vsupp±1.2V 18mA


1. Common Mode Rejection Ratio specifies the ratio of the output voltage caused by a differential input voltage vs. a common mode input voltage. Ideally infinite; 100dB = 100,000 the sensitivity to differential noise than common-mode noise. This is the fundamental reason to use instrumentation amplifiers: to amplify small differential signals that ride upon large and possibly varying common-mode signals, especially when the source impedance of the signal is high encouraging capacitive coupling of 60Hz powerline and radiofrequency noise.
2. The output voltage swing is usually not rail-to-rail (i.e. cannot go entirely between the low and high chip supply voltages). Vswing limit refers to how close the output voltages can approach the positive and negative voltage supply rails (e.g. an AD620 powered from 0 and 5V can have an output that varies from 1.2 to 3.8V).


Device description
HAL300 Hall effect magnetic field sensor
LM331 Voltage to frequency converter
LM34 Temperature to voltage sensor
LM386 1W Audio power amplifier
LM3914 10 LED bargraph driver, linear response
LM3915 10 LED bargraph driver, logarthmic response
LM565 Phase locked loop (w/ frequency to voltage converter)
LM567 Tone decoder
OPL550 Buffered optosensor


Device Frequency Vout max Iout comments
min max
LM555 0 2MHz 2-15V 200mA free design software available here
LM556 0 2MHz 2-15V 200mA dual 555's
ICL8038 0 300kHz 2-28V 12mA sine, triangle, or squarewave outputs
CD4060 690kHz 12MHz 5V CMOS digital self-contained, cheap


All outputs are squarewaves except for ICL8038


Device General Vpower Input Output
#1 Slew Low High Ib Voff Vswing limit2 Imax
LM324 4 7V/us 3V 32V 45nA 2mV V- to V+-1.5 20mA
LM741 1 0.5V/us 5V 44V 80nA 1mV V-+2.1 to V+-2.1 25mA
LMC6081 1 0.8V/us 4.5V 15V 10fA 0.15mV V- to V+ 30mA
LMC6082 2 0.8V/us 4.5V 15V 10fA 0.15mV V- to V+ 30mA
LMC6084 4 0.8V/us 4.5V 15V 10fA 0.15mV V- to V+ 30mA
LMC6482 2 1.3V/us 3V 16V 20fA 0.9mV V- to V+ 20mA
LMC6484 4 1.3V/us 3V 16V 20fA 0.9mV V- to V+ 20mA
NJM3403 4 1.2V/us 4V 36V 70nA 2mV V-+1 to V+-1 40mA
OPA548 1 10V/us 8V 60V 100nA 2mV V-+3.3 to V+-3.7 3A !


1. Number of OPAMPs on each chip.
2. The output voltage swing is usually not rail-to-rail (i.e. cannot go entirely between the low and high chip supply voltages). Vswing limit refers to how close the output voltages can approach the positive and negative voltage supply rails (e.g. an AD741 powered from -5V and 5V can have an output that varies from -3.9V to 3.9V). R-R, or Rail to rail, means that the output voltage can swing anywhere between the two power supply rails (i.e. same as specifying a Vswing limit = Vsupply ± 0V).


Device type polarity Vmax1 Imax2 RDS3
2N3904 BJT NPN 40V 200mA -
2N3906 BJT PNP 40V 200mA -
2N7000 FET NMOS 60V 400mA 2 ohm
IRF510 FET NMOS 100V 5A 0.5 ohm
IRF540 FET NMOS 100V 33A 40 mohm
IRF3205 FET NMOS 55V 110A 8 mohm


1. Vmax is the maximum VCE for BJT's or VDS for FET's.
2. Imax is maximum collector current for BJT's or maximum drain current for FET's.
3. Rds is for FET's when turned on. Ideally 0 ohms, this specifies how closely the FET looks like a closed switch.

Voltage Regulators

device output input type1 error2 pkg comments
Vreg Imax Vmax Vd3
78L05 5V 100mA 30V 1.7V@40mA L no TO92, SMT classic
78L05 5V 1A 30V 2V@100mA L no TO220, SMT classic
79L05 -5V 100mA 35V 1.7V@40mA L no TO92, SMT classic
79L12 -12V 1A 35V 2V@100mA L no TO220, SMT classic
LM317 1.2-37V 1.5A 40V 1.6V@100mA L no TO220, SMT variable
LP2953 5V 250mA 30V 0.024V @80mA L yes DIP, SMT
LP3871 5V4 800mA 7V 0.024V@80mA L yes TO220, SMT
ICL7663 1.6-16V 50mA 18V 1V@10mA L no DIP, SMT  
ICL7665 1.6-16V dual comparator w/ reference for V regs DIP, SMT  
TLE2426 4-40V Ground splitter5, 80mA max TO92


1. Type can be L for linear or S for switching. Linear regulators have the least output ripple and won't inject noise in the system. They work by reducing the difference between the input and output voltage as heat, so they often require heat sinks. Switch mode power supplies work by turning on and off typically hundreds of thousands of times each second. They dissipate much less power, but introduce typically 10mV to 100mV of ripple into the output.
2. Some chips have a pin that indicates if the output is in-regulation or not.
3. Vd is the dropout voltage, the minimum voltage that the input must exceed the output for the output to be regulated. It is a strong function of output current.
4. 2.5V and 3.3V versions are also available.
5. A ground splitter takes a ground and a Vcc supply, and creates a new supply output at Vcc/2. This is typically used as a virtual ground, giving the user ±Vcc/2 and the virtual ground supplies.