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5-3
IM DL850-03EN
External Signal I/O
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App
Index
5.3 External Clock Input (EXT CLK IN)
CAUTION
Only apply signals that meet the following specifications. Signals that do not meet the
specifications may damage the DL850/DL850V, because of factors such as excessive voltage.
External-clock input terminal
EXT CLKIN
Use this terminal to operate the DL850/DL850V using an external clock signal.
Item
Specifications
Connector type
BNC
Input level
TTL (0 to 5 V)
Detected edge
Rising
Minimum pulse width
50 ns or more for both high and low
External clock frequency range
Up to 9.5 MHz
Circuit Diagram for External Clock Input
Equivalent
to LCX14
EXT CLK IN
100 Ω
+5 V
4.7 kΩ
100 pF