74LS42 Datenblatt PDF – Decimal Decoders – TI

Teilenummer : 74LS42


Hersteller : Texas Instruments

Pinout :

74LS42 datenblatt

Beschreibung :

These monolithic BCD-to-decimal decoders consist of eight inverters and ten four-input NAND gates. The inverters are connected in pairs to make BCD input data availible for decoding by the NAND gates. Full decoding of valid input logic ensures that all outputs remain off for all invalid input conditions.

The 74LS42A and 74LS42 feature inputs and outputs that are compatible for use with most TTL and other saturated low-level logic circuits. DC noise margins are typically one volt.


74LS42 logic diagram


74LS42 Datenblatt PDF Download

74LS42 pdf

Andere Datenblätter in der Datei : 5442A, 54LS42, 7442A, SN5442A

AD8302 Datenblatt PDF ( Pinout, schematic )

Teilenummer : AD8302

Function : 5.5V; LF-2.7GHz FR/IF gain and phase detector. For RF/IF PA linearization, precise RF power control

Hersteller : Analog Devices

Pinout :

AD8302 datenblatt

Beschreibung :

The AD8302 is a fully integrated system for measuring gain/loss and phase in numerous receive, transmit, and instrumentation applications. It requires few external components and a single supply of 2.7 V–5.5 V. The ac-coupled input signals can range from –60 dBm to 0 dBm in a 50 Ωsystem, from low frequencies up to 2.7 GHz. The outputs provide an accurate measurement of either gain or loss over a ±30 dB range scaled to 30 mV/dB, and of phase over a 0°–180°range scaled to 10 mV/degree. Both subsystems have an output bandwidth of 30 MHz, which may optionally be reduced by the addition of external filter capacitors. The AD8302 can be used in controller mode to forcethe gain and phase of a signal chain toward predetermined setpoints.


1. Measures Gain/Loss and Phase up to 2.7 GHz

2. Dual Demodulating Log Amps and Phase Detector

3. Input Range –60 dBm to 0 dBm in a 50 System

4. Accurate Gain Measurement Scaling (30 mV/dB)

5. Typical Nonlinearity < 0.5 dB

6. Accurate Phase Measurement Scaling (10 mV/Degree)

7. Typical Nonlinearity < 1 Degree

8. Measurement/Controller/Level Comparator Modes

9. Operates from Supply Voltages of 2.7 V–5.5 V

10. Stable 1.8 V Reference Voltage Output

11. Small Signal Envelope Bandwidth from DC to 30 MHz


1. RF/IF PA Linearization

2. Precise RF Power Control

3. Remote System Monitoring and Diagnostics

4. Return Loss/VSWR Measurements

5. Log Ratio Function for AC Signals


Datenblatt PDF Download

AD8302 pdf

Andere Datenblätter in der Datei : AD8302ARU