DDU8F Datasheet, PDF (2/4 Pages) Data Delay Devices, Inc. – 5-TAP, TTL-INTERFACED FIXED DELAY LINE

DDU8F
APPLICATION NOTES
HIGH FREQUENCY RESPONSE
The DDU8F tolerances are guaranteed for input
pulse widths and periods greater than those
specified in the test conditions. Although the
device will function properly for pulse widths as
small as 40% of the total delay and periods as
small as 80% of the total delay (for a symmetric
input), the delays may deviate from their values
at low frequency. However, for a given input
condition, the deviation will be repeatable from
pulse to pulse. Contact technical support at Data
Delay Devices if your application requires device
testing at a specific input condition.
POWER SUPPLY BYPASSING
The DDU8F relies on a stable power supply to
produce repeatable delays within the stated
tolerances. A 0.1uf capacitor from VCC to GND,
located as close as possible to the VCC pin, is
recommended. A wide VCC trace and a clean
ground plane should be used.
DEVICE SPECIFICATIONS
TABLE 1: ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL MIN
MAX UNITS NOTES
DC Supply Voltage
V_CC
-0.3
7.0
V
Input Pin Voltage
V_IN
-0.3
V_DD+0.3
V
Storage Temperature
T_STRG
-55
150
C
Lead Temperature
T_LEAD
300
C
10 sec
TABLE 2: DC ELECTRICAL CHARACTERISTICS
(0C to 70C, 4.75V to 5.25V)
PARAMETER
SYMBOL MIN
High Level Output Voltage
V_OH
2.5
Low Level Output Voltage
V_OL
High Level Output Current
I_OH
Low Level Output Current
I_OL
High Level Input Voltage
V_IH
2.0
Low Level Input Voltage
V_IL
Input Clamp Voltage
V_IK
Input Current at Maximum
I_IHH
Input Voltage
High Level Input Current
I_IH
Low Level Input Current
I_IL
Short-circuit Output Current
I_OS
-60
Output High Fan-out
Output Low Fan-out
TYP
3.4
0.35
MAX
0.5
-1.0
20.0
0.8
-1.2
0.1
20
-0.6
-150
25
12.5
UNITS
V
V
mA
mA
V
V
V
mA
NOTES
V_CC = MIN, I_OH = MAX
V_IH = MIN, V_IL = MAX
V_CC = MIN, I_OL = MAX
V_IH = MIN, V_IL = MAX
V_CC = MIN, I_I = I_IK
V_CC = MAX, V_I = 7.0V
µA
mA
mA
Unit
Load
V_CC = MAX, V_I = 2.7V
V_CC = MAX, V_I = 0.5V
V_CC = MAX
Doc #97012
DATA DELAY DEVICES, INC.
2
1/28/97
Tel: [phone] Fax: [phone] http://www.datadelay.com