74LS20 Datenblatt PDF – 4-INPUT NAND GATE – Motorola

Teilenummer : 74LS20

Funktion :DUAL 4-INPUT NAND GATE LOW POWER SCHOTTKY

Hersteller : Motorola => Freescale

Pinout :

74LS20 datenblatt

Beschreibung :

54LS20
74LS20
SN54LS20
SN54LS20J
SN74LS20
SN74LS20D
SN74LS20N

74LS20 Datenblatt PDF Download

74LS20 pdf

Andere Datenblätter in der Datei : 54LS20, 74LS20P, SN54LS20, SN54LS20J

AD5700 Datenblatt PDF – HART Modem – AD

Teilenummer : AD5700

Function : Low Power HART Modem

Package : 4 mm × 4 mm LFCSP

Hersteller : Analog Devices

Pinout :

AD5700 datenblatt

Beschreibung :

The AD5700/AD5700-1are single-chip solutions, designed and specified to operate as a HART® FSK half-duplex modem, complying with the HART physical layer requirements. The AD5700/AD5700-1integrate all of the necessary filtering, signal detection, modulating, demodulating and signal generation functions, thus requiring few external components. The 0.5% precision internal oscillator on the AD5700-1 greatly reduces the board space requirements, making it ideal for line-powered applications in both master and slave configurations. The maximum supply current consumption is 115 μA, making the AD5700/AD5700-1 an optimal choice for low power loop-powered applications. Transmit waveforms are phase continuous 1200 Hz and 2200 Hz sinusoids. The AD5700/AD5700-1contain accurate carrier detect circuitry and use a standard UART interface.

FEATURES
1. HART-compliant fully integrated FSK modem
2. 1200 Hz and 2200 Hz sinusoidal shift frequencies
3. 115 μA maximum supply current in receive mode
4. Suitable for intrinsically safe applications
5. Integrated receive band-pass filter
6. Minimal external components required
7. Clocking optimized for various system configurations
8. Ultralow power crystal oscillator (60 μA maximum)
9. External CMOS clock source
10. Precision internal oscillator (AD5700-1only)
11. Buffered HART output—extra drive capability
12. 8 kV HBM ESD rating
13. 1.71 V to 5.5 V power supply
14. 1.71 V to 5.5 V interface
15 .−40°C to +125°C operation
16. HART physical layer compliant
17. UART interface

APPLICATIONS
1. Field transmitters
2. HART multiplexers
3. PLC and DCS analog I/O modules
4. HART network connectivity

VCC = 1.71 V to 5.5 V, IOVCC = 1.71 V to 5.5 V, AGND = DGND, CLKOUT disabled, HART_OUT with 5 nF load, internal and external receive filter, internal reference; all specifications are from −40°C to +125°C and relate to both A and B models, unless otherwise noted.

 

AD5700 Datenblatt PDF Download

AD5700 pdf

Andere Datenblätter in der Datei : AD5700-1, AD5700-1ACPZ-RL7, AD5700-1BCPZ-RL7