mxd1005 Maxim Integrated Products, Inc., mxd1005 Datasheet - Page 5

• Manufacturer Part Number: mxd1005
• Description: Mxd1005 5-tap Silicon Delay Line
• Manufacturer: Maxim Integrated Products, Inc.

Variations in supply voltage may affect the MXD1005’s
fixed tap delays. Supply voltages beyond the specified
range may result with larger variations. The devices are
internally compensated to reduce the effects of temper-
ature variations. Although these devices might vary with
supply and temperature, the delays vary unilaterally,
which suggests that TAP3 can never be faster than
TAP2.
Figure 1. Timing Diagram
__________Applications Information
OUT
IN
t
RISE
V
V
IH
IL
1.5V
0.6V
2.4V
_______________________________________________________________________________________
t
WI
t
2.4V
PLH
Supply and Temperature
1.5V
0.6V
PERIOD
t
FALL
1.5V
t
PHL
Effects on Delay
1.5V
1.5V
5-Tap Silicon Delay Line
The output load can affect the tap delays. Larger
capacitances tend to lengthen the rising and falling
edges, thus increasing the tap delays. As the taps are
loaded with other logic devices, the increased load will
increase the tap delays.
The device should be driven with a source that can
deliver the required current for proper operation. A
0.1µF ceramic bypassing capacitor could be used. The
board should be designed to reduce stray capaci-
tance.
Figure 2. Test Circuit
V
IN
50
CC
0.1µF
Board Layout Considerations/Decoupling
(+5V)
MXD1005
MEASUREMENT
20%
20%
20%
20%
20%
TIME
UNIT
Capacitance and Loading
Effects on Delay
74FO4
TAP1
TAP2
TAP3
TAP4
TAP5
5