DS1124
Test Conditions
Input:
Ambient Temperature:
25°C ±3°C
Supply Voltage (VCC):
5.0V ±0.1V
Input Pulse:
High = 3.0V ±0.1V
Low = 0.0V ±0.1V
Source Impedance:
50
Ω max
Rise and Fall Times:
3.0ns max (measured between 0.6V and 2.4V)
Pulse Width:
250ns
Period:
10s
Output: The outputs are loaded with 15pF. Delay is measured between the 1.5V level of the rising or falling edge of
the input signal and the corresponding edge of the output signal.
Note: Above conditions are for test only and do not restrict the operation of the device under other data sheet conditions.
5.0V 8-Bit Programmable
Timing Element
8
_______________________________________________________________________________________
Q
E
CLK
OUTPUT
I/O PIN
OUTPUT
D
MICROPROCESSOR
A) USING A FEEDBACK RESISTOR WITH AN I/O PIN FOR READING THE DS1124.
RFB
Q
E
CLK
OUTPUT
I/O PIN
OUTPUT
D
MICROPROCESSOR
RFB
C) CASCADING MULTIPLE DS1124s ON A 3-WIRE BUS.
Q
E
CLK
OUTPUT
D
INPUT
MICROPROCESSOR
B) USING A SEPARATE INPUT PIN TO READ THE DS1124.
Q
E
CLK
D
Q
E
CLK
D
DS1124
U1
DS1124
U2
DS1124
U3
DS1124
Figure 4. Examples Using the Serial Interface