3-Bit Programmable Delay Modules
PLDM4 Series
FAST/TTL Logic
7 Delay Steps -- 4 ns Inherent Delay
Available in Surface Mount
Electrical Specifications at 25
O
C
3-Bit FAST
Part Number
PLDM4-0.5
PLDM4-0.7
PLDM4-0.8
PLDM4-1
PLDM4-1.2
PLDM4-1.25
PLDM4-1.3
PLDM4-1.5
PLDM4-1.8
PLDM4-2
PLDM4-2.5
PLDM4-2.6
PLDM4-3
Delay per
Step (ns)
0.5 ± .25
0.7 ± .30
0.8 ± .30
1.0 ± .4
1.2 ± .4
1.25 ± .5
1.3 ± .5
1.5 ± .5
1.8 ± .6
2.0 ± .7
2.5 ± .7
2.6 ± .7
3.0 ± .7
Error ref.
to 000
(ns)
± .30
± .40
± .50
± .50
± .60
± .70
± .70
± .70
± .80
± .80
± .90
± .90
± 1.0
Initial
Delay (ns)
000
4 ± 1.0
4 ± 1.0
4 ± 1.0
4 ± 1.0
4 ± 1.0
4 ± 1.0
4 ± 1.0
4 ± 1.0
4 ± 1.0
4 ± 1.0
4 ± 1.0
4 ± 1.0
4 ± 1.0
FAST/TTL 3-Bit Schematic
Vcc
16
P1
11
P2
10
P3
9
3-Bit Programmable
Delay Line
Output
Buffer
4
IN
5
OUT
7
E
8
GND
Referenced to "000" - Delay (ns) per Program Setting (P3*P2*P1)
000
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
001
0.5
0.7
0.8
1.0
1.2
1.25
1.3
1.5
1.8
2.0
2.5
2.6
3.0
010
1.0
1.4
1.6
2.0
2.4
2.50
2.6
3.0
3.6
4.0
5.0
5.2
6.0
011
1.5
2.1
2.4
3.0
3.6
3.75
3.9
4.5
5.4
6.0
7.5
7.8
9.0
100
2.0
2.8
3.2
4.0
4.8
5.00
5.2
6.0
7.2
8.0
10.0
10.4
12.0
101
2.5
3.5
4.0
5.0
6.0
6.25
6.5
7.5
9.0
10.0
12.5
13.0
15.0
110
3.0
4.2
4.8
6.0
7.2
7.50
7.8
9.0
10.8
12.0
15.0
15.6
18.0
111
3.5
4.9
5.6
7.0
8.4
8.75
9.1
10.5
12.6
14.0
17.5
18.2
21.0
CUMULATIVE TOLERANCES:
"Error" Tolerance is for Programmed Delays referenced to Initial Delay, Setting "000."
For example, the setting "111" delay of PLDM4-10 is 70.0
±
3.0ns ref. to "000," and 74.0
±
4.0ns referenced to the input.
_
ENABLE
input (Pin 7) is active low. Output will be disabled ( low) when " E " is high.
INPUT FAN-IN:
Input, pin 4, is loaded by the internal passive
network and 8 gate inputs (74F type). The source driving Pin 4
should be FAST/TTL (74S/74F) type or equivalent, and should not
be used to drive any load other than the delay line input.
Dimensions in Inches (mm)
TEST CONDITIONS
-- FAST / TTL
V
CC
Supply Voltage ............................................... 5.00VDC
Input Pulse Voltage ................................................... 3.20V
Input Pulse Rise Time ....................................... 3.0 ns max.
Input Pulse Width / Period ........................... 1000 / 2000 ns
1. Measurements made at 25
O
C
2. Delay Times measured at 1.50V level of leading edge.
3. Rise Times measured from 0.75V to 2.40V.
4. 10pf probe and fixture load on output.
.810
(20.57)
MAX.
.400
(10.16)
MAX.
.260 .300
(6.60) (7.62)
TYP. MAX.
.120
(3.05)
MIN.
.010
(0.25)
TYP.
.020
(0.51)
TYP.
.050 .100
(1.27) (2.54)
TYP.
TYP.
.300
(7.62)
OPERATING SPECIFICATIONS
V
CC
Supply Voltage ................................... 5.00 ± 0.25 VDC
I
CC
Supply Current .......................... 60 mA typ., 80 mA max
Logic “1” Input *: V
IH
..................... 2.00 V min., 5.50 V max.
I
IH
............................... 50
µA
max. @ 2.70V
Logic “0” Input *: V
IL
....................................... 0.80 V max.
I
IL
............................................ -0.6 mA mA
V
OH
Logic “1” Voltage Out ................................... 2.40 V min.
V
OL
Logic “0” Voltage Out ................................ 0.50 V max.
P
WI
Input Pulse Width ............................. 40% of Delay min.
Operating Temperature Range ......................... -0
O
to +70
O
C
Storage Temperature Range ...................... -65
O
to +150
O
C
* Refer to "INPUT FAN-IN" note above.
IIL/IIH specified for Programming pins 9, 10 & 11.
16-Pin SMD Pkg. Unused leads are NOT removed.
To Specify SMD Package, Add "G" Suffix to P/N
Examples: PLDM4-1.25G, PLDM4-2G
1.02
(25.9)
MAX.
.400
(10.16)
.285
(7.24)
MAX.
.010
(0.25)
TYP.
.020
(0.51)
TYP.
.040
(1.02)
TYP.
.100
(2.54)
TYP.
.015
(0.38)
.025
(0.64)
.510 (12.95)
.480 (12.19)
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