5-3
IM DL850-03EN
External Signal I/O
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
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