PDU54
4-BIT, ECL-INTERFACED
PROGRAMMABLE DELAY LINE
(SERIES PDU54)
3
delay
devices, inc.
FEATURES
PACKAGES
N/C
N/C
GND
N/C
N/C
N/C
N/C
N/C
GND
OUT
N/C
N/C
1
24
23
22
21
20
19
18
17
16
15
14
13
IN
N/C
N/C
24
23
22
21
20
19
18
17
16
15
14
13
IN
1
2
3
4
5
6
7
8
2
N/C
VEE
A3
N/C
VEE
A3
N/C
N/C
A2
A1
VEE
A0
•
•
•
•
•
Digitally programmable in 16 delay steps
Monotonic delay-versus-address variation
Precise and stable delays
Input & outputs fully 100K-ECL interfaced & buffered
Available in 24-pin DIP (600 mil) socket or SMD
3
GND
N/C
N/C
N/C
N/C
N/C
GND
OUT
N/C
N/C
4
5
N/C
N/C
A2
6
7
8
A1
9
VEE
A0
10
11
12
9
N/C
N/C
10
11
12
N/C
N/C
PDU54-xx DIP
PDU54-xxC4 SMD
PDU54-xxM Military DIP
PDU54-xxMC4 Mil SMD
FUNCTIONAL DESCRIPTION
PIN DESCRIPTIONS
The PDU54-series device is a 4-bit digitally programmable delay line. The
delay, TDA, from the input pin (IN) to the output pin (OUT) depends on the
address code (A3-A0) according to the following formula:
IN
Signal Input
OUT Signal Output
A3-A0 Address Bits
VEE -5 Volts
TDA = TD0 + TINC * A
GND Ground
where A is the address code, TINC is the incremental delay of the device, and TD0 is the inherent delay of
the device. The incremental delay is specified by the dash number of the device and can range from
100ps through 3000ps, inclusively. The address is not latched and must remain asserted during normal
operation.
SERIES SPECIFICATIONS
DASH NUMBER SPECIFICATIONS
•
Total programmed delay tolerance: 5% or 40ps,
Part
Incremental Delay
Per Step (ps)
100 ± 50
Total Delay
Change (ns)
1.50
whichever is greater
Number
PDU54-100
PDU54-200
PDU54-250
PDU54-400
PDU54-500
PDU54-750
PDU54-1000
PDU54-1200
PDU54-1500
PDU54-2000
PDU54-2500
PDU54-3000
•
•
•
•
•
•
•
Inherent delay (TD0): 3.3ns typical
Address to input setup (TAIS): 2.9ns
Operating temperature: 0° to 85° C
Temperature coefficient: 100PPM/°C (excludes TD0)
Supply voltage VEE: -5VDC ± 0.7V
Power Supply Current: -300ma typical (50Ω to -2V)
Minimum pulse width: 3ns or 10% of total delay,
whichever is greater
3.00
200 ± 60
3.75
250 ± 60
6.00
400 ± 80
7.50
500 ± 100
750 ± 100
11.25
15.00
1000 ± 200
1200 ± 200
1500 ± 200
2000 ± 400
2500 ± 400
3000 ± 500
18.00
22.50
30.00
•
Minimum period: 8ns or 2 x pulse width, whichever
is greater
37.50
45.00
A3-A0
A i-1
Ai
NOTE: Any dash number between 100 and 3000
not shown is also available.
PWIN
TOAX
TAIS
IN
TDA
PWOUT
OUT
Figure 1: Timing Diagram
1997 Data Delay Devices
Doc #98004
3/18/98
DATA DELAY DEVICES, INC.
1
3 Mt. Prospect Ave. Clifton, NJ 07013
DATADELAY [ DATA DELAY DEVICES, INC. ]
