Datenblatt-pdf.com


ELM626 Schematic ( PDF Datasheet ) - ELM Electronics

Teilenummer ELM626
Beschreibung RS232 Break Detector
Hersteller ELM Electronics
Logo ELM Electronics Logo 




Gesamt 4 Seiten
ELM626 Datasheet, Funktion
ELM626
RS232 Break Detector
Description
The ELM626 is a complete circuit for detecting
break signals on RS232 lines, in an 8 pin package.
The circuit is similar to the ELM627 except that an
output pulse is not generated on power-up.
The threshold for break signal detection is user
selectable, allowing the circuit to respond to a
transmitted null character, <ctrl>@, at various baud
rates. This provides a convenient means for the
remote triggering of this circuit by simply shifting to a
lower baud rate and sending a null byte.
Two complementary high current outputs are
provided by the ELM626, so that further buffering is
not usually required. The output signal can be
selected to be either a continuous one (following the
TxD input line) or else a 100ms pulse output.
No external components are required for circuit
operation other than possibly a current limiting
resistor, as all timing references are generated
internally.
Applications
• Remote resetting of RS232 devices
• Edge triggered one-shot circuits
www.DataSheDeti4gUit.acollmy controlled sequencing schemes
• Watchdog type signal monitors
Features
• Low power CMOS design - typically 1mA at 5V
• No external timing elements required
• Complementary outputs
• Digitally controlled threshold timing
• Selectable output duration
• High current drive outputs - up to 25 mA
Connection Diagram
PDIP and SOIC
(top view)
VDD 1
Q2
Q3
P/C 4
8 VSS
7 T0
6 T1
5 TxD
Block Diagram
TxD 5
Programmable
Timer
67
T1 T0
Output
Logic
4
P/C
2Q
3Q
ELM626DSA
Elm Electronics – Circuits for the Hobbyist
< http://www.elmelectronics.com/ >
1 of 4





SeitenGesamt 4 Seiten
PDF Download[ ELM626 Schematic.PDF ]

Link teilen




Besondere Datenblatt

TeilenummerBeschreibungHersteller
ELM621SERIAL THREE BIT PORTELM Electronics
ELM Electronics
ELM621LAHigh efficiency 30V step up DC/DC converterELM Technology
ELM Technology
ELM622Infrared Remote InterpreterELM Electronics
ELM Electronics
ELM624Control L (LANC) to RS232 InterpreterELM Electronics
ELM Electronics
ELM626RS232 Break DetectorELM Electronics
ELM Electronics

TeilenummerBeschreibungHersteller
CD40175BC

Hex D-Type Flip-Flop / Quad D-Type Flip-Flop.

Fairchild Semiconductor
Fairchild Semiconductor
KTD1146

EPITAXIAL PLANAR NPN TRANSISTOR.

KEC
KEC


www.Datenblatt-PDF.com       |      2020       |      Kontakt     |      Suche