3D3438
MONOLITHIC 8-BIT
PROGRAMMABLE DELAY LINE
Super-Fine Resolution
(SERIES 3D3438)
FEATURES
PACKAGES
IN
SO
AE
1
2
3
4
8
VDD
OUT
SC
7
6
5
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
GND
SI
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
3D3438Z-xx SOIC8
IN
AE
P0
P1
P2
P3
GND
1
2
3
4
5
6
7
14
13
12
11
10
9
VDD
OUT
P7
P6
P5
P4
GND
SI
8
3D3438S-xx SOW16
Temperature stability: 1.5% max (-40C to 85C)
Vdd stability: 0.5% max (3.0V to 3.6V)
3D3438D-xx SOIC14
For mechanical dimensions, click here.
For package marking details, click here.
FUNCTIONAL DESCRIPTION
PIN DESCRIPTIONS
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:
IN
Signal Input
OUT Signal Output
MD
AE
Mode Select
Address Enable
P0-P7 Parallel Data Input
SC
SI
SO
Serial Clock
Serial Data Input
Serial Data Output
Ti,nom = Tinh + i * Tinc
where i is the programmed address, Tinc is the delay increment (equal
to the device dash number), and Tinh is the inherent (address zero)
delay. The device features both rising- and falling-edge accuracy.
VDD +3.3 Volts
GND 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
DELAYS AND TOLERANCES
INPUT RESTRICTIONS
Inherent
Delay (ns) Range (ns)
Delay
Delay
Step (ps)
Max Freq
(Addr=0)
150 MHz
Max Freq
(Addr=255)
98 MHz
Min P.Width
(Addr=0)
3.3 ns
Min P.Width
(Addr=255)
5.1 ns
NUMBER
3D3438x-50
3D3438x-60
3D3438x-75
3D3438x-80
3D3438x-100
3D3438x-125
3D3438x-150
3D3438x-200
3D3438x-250
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
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
50 25
60 30
75 38
150 MHz
150 MHz
150 MHz
150 MHz
150 MHz
150 MHz
150 MHz
150 MHz
82 MHz
65 MHz
61 MHz
49 MHz
39 MHz
32 MHz
24 MHz
19 MHz
3.3 ns
3.3 ns
3.3 ns
3.3 ns
3.3 ns
3.3 ns
3.3 ns
3.3 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
80 40
100 50
125 63
150 75
200 100
250 125
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