PDU138 Data Delay Devices, Inc., PDU138 Datasheet

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PDU138

Manufacturer Part Number
PDU138
Description
3-bit Programmable Delay Line
Manufacturer
Data Delay Devices, Inc.
Datasheet
1.PDU138.pdf (5 pages)
3-BIT PROGRAMMABLE
DELAY LINE
(SERIES PDU138)
FEATURES
FUNCTIONAL DESCRIPTION
The PDU138-series device is a 3-bit digitally programmable delay line.
The delay, TD
the address code (A2-A0) according to the following formula:
where A is the address code, T
and TD
specified by the dash number of the device and can range from 0.5ns
through 50ns, inclusively. The enable pin (EN/) is held LOW during normal
operation. When this signal is brought HIGH, OUT is forced into the LOW
state. The address is not latched and must remain asserted during normal operation.
SERIES SPECIFICATIONS
Doc #02004
5/6/02
Digitally programmable in 8 delay steps
Monotonic delay-versus-address variation
Precise and stable delays
Input & outputs fully TTL interfaced & buffered
10 T
Fits standard 16-pin DIP socket
Auto-insertable
Total programmed delay tolerance: 5% or 1ns,
Inherent delay (TD
Setup time and propagation delay:
Operating temperature: 0 to 70 C
Temperature coefficient: 100PPM/ C (excludes TD
Supply voltage V
Supply current:
Minimum pulse width: 20% of total delay
0
TD
Address to input setup (T
Disable to output delay (T
2
is the inherent delay of the device. The incremental delay is
L fan-out capability
A
= TD
A
, from the input pin (IN) to the output pin (OUT) depends on
0
+ T
CC
I
I
0
CCH
CCL
INC
: 5VDC
): 7ns typical (OUT)
* A
= 20ma
= 45ma
INC
whichever is greater
3 Mt. Prospect Ave. Clifton, NJ 07013
is the incremental delay of the device,
5%
AIS
DISO
DATA DELAY DEVICES, INC.
):
): 12ns typ.
12ns typ.
0
)
PDU138-.5
PDU138-1
PDU138-2
PDU138-5
PDU138-10
PDU138-12
PDU138-15
PDU138-20
PDU138-40
PDU138-50
NOTE: Any dash number between .5 and 50 not
DASH NUMBER SPECIFICATIONS
Number
Part
PDU138-xx
PDU138-xxM
GND
OUT
shown is also available.
N/C
N/C
N/C
N/C
EN/
IN
PACKAGES
Incremental Delay
data
delay
devices,
Per Step (ns)
1
2
3
4
5
6
7
8
PIN DESCRIPTIONS
IN
OUT Non-inverted Output
A2
A1
A0
EN/
VCC
GND Ground
10
12
15
20
40
50
.5
1
2
5
DIP
Military DIP
16
15
14
13
12
11
10
9
.4
.4
.6
1.0
1.2
1.3
1.5
2.0
2.5
.3
2002 Data Delay Devices
Delay Line Input
Address Bit 2
Address Bit 1
Address Bit 0
Output Enable
+5 Volts
VCC
N/C
N/C
N/C
N/C
A0
A1
A2
Change (ns)
Total Delay
280
350
3
105
140
3.5
PDU138
14
35
70
84
7
inc.
1.0
1.0
1.8
3.5
4.2
14.0
17.5
1.0
5.3
7.0
1

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PDU138 Summary of contents

Page 1

... T L fan-out capability Fits standard 16-pin DIP socket Auto-insertable FUNCTIONAL DESCRIPTION The PDU138-series device is a 3-bit digitally programmable delay line. The delay from the input pin (IN) to the output pin (OUT) depends on A the address code (A2-A0) according to the following formula: TD ...

Page 2

... PDU138 ADDRESS UPDATE The PDU138 is a memory device. As such, special precautions must be taken when changing the delay address in order to prevent spurious output signals. The timing restrictions are shown in Figure 1. After the last signal edge to be delayed has appeared on the OUT pin, a minimum time required before the address lines can change ...

Page 3

... OH V 0. 0.1 IHH -0 -60 -150 OS 25 12.5 DATA DELAY DEVICES, INC. PDU138 TYP UNITS 7 T INC 7 UNITS NOTES sec UNITS NOTES MIN, I ...

Page 4

... TYP .700 TYP TYP Commercial DIP (PDU138-xx .410 MAX .820 MAX .320 .020 MAX TYP .150 .030 .012 TYP .100 .018 TYP .300 TYP .700 TYP TYP Military DIP (PDU138-xxM) DATA DELAY DEVICES, INC. Fax: 973-773-9672 http://www.datadelay.com 4 ...

Page 5

... Mt. Prospect Ave. Clifton, NJ 07013 TEST CONDITIONS OUTPUT: C Load load 0.1V Threshold: 0.1V PRINTER COMPUTER SYSTEM REF OUT IN TEST (DUT) TRIG Test Setup PER IN T FALL 2.4V 1. 1.5V 1.5V DATA DELAY DEVICES, INC. PDU138 1 FAST-TTL Gate 5pf 10% 1.5V (Rising & Falling) TIME INTERVAL COUNTER ...

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