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3D3438x-125

Description
MONOLITHIC 8-BIT PROGRAMMABLE DELAY LINE (SERIES 3D7438)
File Size95KB,6 Pages
ManufacturerData Delay Devices
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3D3438x-125 Overview

MONOLITHIC 8-BIT PROGRAMMABLE DELAY LINE (SERIES 3D7438)

3D3438
MONOLITHIC 8-BIT
PROGRAMMABLE DELAY LINE
Super-Fine Resolution
(SERIES 3D3438)
FEATURES
All-silicon, low-power CMOS technology
TTL/CMOS compatible inputs and outputs
Vapor phase, IR and wave solderable
Leading- and trailing-edge accuracy
Programmable via serial or parallel interface
Increment range:
50ps through 250ps
Delay tolerance:
0.5% (See Table 1)
Supply current:
3mA typical
Temperature stability:
1.5%
max (-40C to 85C)
Vdd stability:
0.5%
max (3.0V to 3.6V)
PACKAGES
IN
SO
AE
GND
IN
AE
SO/P0
P1
P2
P3
P4
GND
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
VDD
OUT
MD
P7
P6
SC
P5
SI
1
2
3
4
8
7
6
5
VDD
OUT
SC
SI
3D3438Z-xx SOIC8
IN
AE
P0
P1
P2
P3
GND
1
2
3
4
5
6
7
14
13
12
11
10
9
8
VDD
OUT
P7
P6
P5
P4
GND
3D3438S-xx SOW16
3D3438D-xx SOIC14
For mechanical dimensions, click
here.
For package marking details, click
here.
FUNCTIONAL DESCRIPTION
The 3D3438 device is a versatile 8-bit programmable monolithic delay
line. The input (IN) is reproduced at the output (OUT) without inversion,
shifted in time as per the user selection. Delay values, programmed
either via the serial or parallel interface, can be varied over 255 equal
steps according to the formula:
T
i,nom
= T
inh
+ i * T
inc
where i is the programmed address, T
inc
is the delay increment (equal
to the device dash number), and T
inh
is the inherent (address zero)
delay. The device features both rising- and falling-edge accuracy.
PIN DESCRIPTIONS
IN
OUT
MD
AE
P0-P7
SC
SI
SO
VDD
GND
Signal Input
Signal Output
Mode Select
Address Enable
Parallel Data Input
Serial Clock
Serial Data Input
Serial Data Output
+3.3 Volts
Ground
The all-CMOS 3D3438 integrated circuit has been designed as a reliable, economic alternative to hybrid
TTL programmable delay lines. It is offered in a standard surface mount 16-pin SOL. An 8-pin SOIC
package is available for applications where the parallel interface is not needed. Similarly, a 14-pin SOIC is
offered for applications where the serial interface is not needed.
TABLE 1: PART NUMBER SPECIFICATIONS
PART
NUMBER
3D3438x-50
3D3438x-60
3D3438x-75
3D3438x-80
3D3438x-100
3D3438x-125
3D3438x-150
3D3438x-200
3D3438x-250
DELAYS AND TOLERANCES
Inherent
Delay (ns)
7.0
0.5
7.0
0.5
7.0
0.5
7.0
0.5
7.0
0.5
7.0
0.5
7.0
0.5
7.0
0.5
7.0
0.5
Delay
Range (ns)
12.750
.05
15.300
.06
19.125
.08
20.400
.08
25.500
.10
31.875
.13
38.250
.15
51.000
.20
63.750
.25
Delay
Step (ps)
50
25
60
30
75
38
80
40
100
50
125
63
150
75
200
100
250
125
Max Freq
(Addr=0)
150 MHz
150 MHz
150 MHz
150 MHz
150 MHz
150 MHz
150 MHz
150 MHz
150 MHz
INPUT RESTRICTIONS
Max Freq
(Addr=255)
98 MHz
82 MHz
65 MHz
61 MHz
49 MHz
39 MHz
32 MHz
24 MHz
19 MHz
Min P.Width
(Addr=0)
3.3 ns
3.3 ns
3.3 ns
3.3 ns
3.3 ns
3.3 ns
3.3 ns
3.3 ns
3.3 ns
Min P.Width
(Addr=255)
5.1 ns
6.1 ns
7.6 ns
8.1 ns
10.0 ns
12.7 ns
15.3 ns
20.4 ns
25.5 ns
NOTES: Replace the ‘x’ in the part number with D, S or Z, depending on choice of package.
Any dash number between 50 and 250 not shown is also available as standard.
See application notes section for more details
2010
Data Delay Devices
Doc #10005
7/8/2010
DATA DELAY DEVICES, INC.
3 Mt. Prospect Ave. Clifton, NJ 07013
1

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