Ds1124, 0v 8-bit programmable timing element, Test conditions – Rainbow Electronics DS1124 User Manual
Page 8
DS1124
Test Conditions
Input:
Ambient Temperature:
25°C ±3°C
Supply Voltage (V
CC
):
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:
10µs
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.
R
FB
Q
E
CLK
OUTPUT
I/O PIN
OUTPUT
D
MICROPROCESSOR
R
FB
C) CASCADING MULTIPLE DS1124s ON A 3-WIRE BUS.
Q
E
CLK
OUTPUT
OUTPUT
OUTPUT
D
INPUT
MICROPROCESSOR
B) USING A SEPARATE INPUT PIN TO READ THE DS1124.
Q
E
CLK
D
Q
E
CLK
D
DS1124
DS1124
U1
DS1124
U2
DS1124
U3
DS1124
Figure 4. Examples Using the Serial Interface