3D3444

MONOLITHIC QUAD 4-BIT

PROGRAMMABLE DELAY LINE

(SERIES 3D3444)

FEATURES

•

Four indep’t programmable lines on a single chip

•

All-silicon CMOS technology

•

Low voltage operation (3.3V)

•

Low quiescent current (1mA typical)

•

Leading- and trailing-edge accuracy

•

Vapor phase, IR and wave solderable

•

Auto-insertable (DIP pkg.)

•

Increment range: 2ns through 25ns

•

Delay tolerance: 1ns or 2% (See Table 1)

•

Temperature stability:

±2% typical (0C-70C)

•

Vdd stability:

±1% typical

•

Minimum input pulse width: 10% of total delay

FUNCTIONAL DESCRIPTION

The 3D3444 device is a small, versatile, quad 4-bit programmable

monolithic delay line. Delay values, programmed via the serial interface,

can be independently varied over 15 equal steps. The step size (in ns) is

determined by the device dash number. Each input is reproduced at the

corresponding output without inversion, shifted in time as per user

selection. For each line, the delay time is given by:

TI is the delay increment (dash number). The desired addresses are shifted into the device via the SC and

SI inputs, and the addresses are latched using the AL input. The serial interface can also be used to

enable/disable each delay line. The 3D3444 operates at 3.3 volts and has a typical T0 of 9ns. The 3D3444

is CMOS-compatible, capable of sourcing or sinking 4mA loads, and features both rising- and falling-edge

accuracy. The device is offered in a standard 14-pin auto-insertable DIP and a space saving surface mount

14-pin SOIC.

PACKAGES

14

13

12

11

10

9

8

1

2

3

4

5

6

7

I1

SC

I2

I3

I4

SI

GND

VDD

AL

O1

SO

O2

O3

O4

DIP-14

3D3444-xx

1

2

3

4

5

6

7

14

13

12

11

10

9

8

I1

SC

I2

I3

I4

SI

GND

VDD

AL

O1

SO

O2

O3

O4

SOIC-14

3D3444D-xx

PIN DESCRIPTIONS

I1-I4

Signal Inputs

O1-O4 Signal Outputs

AL

Address Latch In

SC

Serial Clock In

SI

Serial Data In

SO

Serial Data Out

VDD

3.3V

GND

Ground

TABLE 1: PART NUMBER SPECIFICATIONS

DELAYS AND TOLERANCES (ns)

INPUT RESTRICTIONS

Delay

Total

Inherent

Max Freq. (MHz)

Min P.W. (ns)

PART

NUMBER

Increment

Delay

Delay

Recommended

Absolute

Recommended

Absolute

3D3444-2

2.0

± 1.50

30.0

± 1.0

9

± 2.0

13.8

166

36.0

3.0

3D3444-4

4.0

± 2.00

60.0

± 1.2

9

± 2.0

7.57

83.3

66.0

6.0

3D3444-5

5.0

± 2.25

75.0

± 1.5

9

± 2.0

6.17

66.6

81.0

7.5

3D3444-8

8.0

± 3.00

120

± 2.4

9

± 2.0

3.96

41.6

126.0

12.0

3D3444-10

10

± 3.00

150

± 3.0

9

± 2.0

3.20

33.3

156.0

15.0

3D3444-15

15

± 4.00

225

± 4.5

9

± 2.0

2.16

22.2

231.0

22.5

3D3444-20

20

± 6.00

300

± 6.0

9

± 2.0

1.63

16.6

306.0

30.0

3D3444-25

25

± 7.00

375

± 7.5

9

± 2.0

1.31

13.3

381.0

37.5

NOTES: Any increment between 2 and 25 ns not shown is also available as standard

Total delay is given by delay at address 15 minus delay at address 0

2002 Data Delay Devices

For mechanical dimensions, click

here.

For package marking details, click

here.

Doc #00119

DATA DELAY DEVICES, INC.

1

8/2/02

3 Mt. Prospect Ave. Clifton, NJ 07013