data delay devices DDU4F Service Manual

DDU4F

5-TAP, TTL-INTERFACED

data



3

1

14

IN

VDD

FIXED DELAY LINE
(SERIES DDU4F)

delay
devices,

inc.

FEATURES PACKAGES

IN

• Five equally spaced outputs

1

• Fits standard 14-pin DIP socket

T2

GND

4

T4

6
7

• Low profile

• Auto-insertable

• Input & outputs fully TTL interfaced & buffered

• 10 T2L fan-out capability

DDU4F-xx DIP
DDU4F-xxA2 Gull-Wing
DDU4F-xxB2 J-Lead
DDU4F-xxM Military DIP

FUNCTIONAL DESCRIPTION

The DDU4F-series device is a 5-tap digitally buffered delay line. The
signal input (IN) is reproduced at the outputs (T1-T5), shifted in time by an
amount determined by the device dash number (See Table). For dash
numbers less than 5025, the total delay of the line is measured from T1 to
T5. The nominal tap-to-tap delay increment is given by one-fourth of the
total delay, and the inherent delay from IN to T1 is nominally 3.5ns. For
dash numbers greater than or equal to 5025, the total delay of the line is measured from IN to T5. The
nominal tap-to-tap delay increment is given by one-fifth of this number.

VCC

14

T1

12

T3

10

T5

8

GND

N/C
N/C

T2

N/C

T4

2

13

3

12

4

11

5

10

6

9

7

8

Military SMD
DDU4F-xxMC2

PIN DESCRIPTIONS

IN Signal Input
T1-T5 Tap Outputs
VCC +5 Volts
GND Ground

N/C
T1
N/C
T3
N/C
T5

SERIES SPECIFICATIONS

• Minimum input pulse width: 20% of total delay

• Output rise time: 2ns typical

• Supply voltage: 5VDC ± 5%

• Supply current: I

I

• Operating temperature: 0° to 70° C

• Temp. coefficient of total delay: 100 PPM/°C

3.5ns

VCC GNDIN T1 T2 T3 T4 T5

Functional diagram for dash numbers < 5025

20% 20% 20% 20% 20%

VCC GNDIN T1 T2 T3 T4 T5

Functional diagram for dash numbers >= 5025

1997 Data Delay Devices

= 32ma typical

CCL

= 7ma typical

CCH

25% 25% 25% 25%

DASH NUMBER SPECIFICATIONS

Part

Number

DDU4F-5004
DDU4F-5006
DDU4F-5008
DDU4F-5010
DDU4F-5012
DDU4F-5016
DDU4F-5020
DDU4F-5025
DDU4F-5030
DDU4F-5040
DDU4F-5050
DDU4F-5060
DDU4F-5075
DDU4F-5100
DDU4F-5125
DDU4F-5150
DDU4F-5200
DDU4F-5250
DDU4F-5300
DDU4F-5400
DDU4F-5500

* Total delay is referenced to first tap output
Input to first tap = 3.5ns ±± 1ns

NOTE: Any dash number between 5004 and 5500

Total

Delay (ns)

4 ± 1.0 * 1.0 ± 0.5
6 ± 1.0 * 1.5 ± 0.5

8 ± 2.0 * 2.0 ± 1.0
10 ± 2.0 * 2.5 ± 1.0
12 ± 2.0 * 3.0 ± 1.0
16 ± 2.0 * 4.0 ± 1.5
20 ± 3.0 * 5.0 ± 2.0

25 ± 3.0 5.0 ± 2.0

30 ± 3.0 6.0 ± 2.0

40 ± 3.0 8.0 ± 2.0

50 ± 3.0 10.0 ± 3.0

60 ± 3.0 12.0 ± 3.0

75 ± 4.0 15.0 ± 3.0
100 ± 5.0 20.0 ± 3.0
125 ± 6.5 25.0 ± 3.0
150 ± 7.5 30.0 ± 3.0

200 ± 10.0 40.0 ± 4.0
250 ± 12.5 50.0 ± 5.0
300 ± 15.0 60.0 ± 6.0
400 ± 20.0 80.0 ± 8.0
500 ± 25.0 100.0 ± 10.0

Delay Per

Tap (ns)

Doc #97033 DATA DELAY DEVICES, INC. 1

12/10/97 3 Mt. Prospect Ave. Clifton, NJ 07013

DDU4F

APPLICATION NOTES

HIGH FREQUENCY RESPONSE

The DDU4F tolerances are guaranteed for input
pulse widths and periods greater than those
specified in the test conditions. Although the
device will function properly for pulse widths as
small as 20% of the total delay and periods as
small as 40% of the total delay (for a symmetric
input), the delays may deviate from their values at
low frequency. However, for a given input
condition, the deviation will be repeatable from
pulse to pulse. Contact technical support at Data

DEVICE SPECIFICATIONS

TABLE 1: ABSOLUTE MAXIMUM RATINGS

PARAMETER SYMBOL MIN MAX UNITS NOTES

DC Supply Voltage V
Input Pin Voltage V
Storage Temperature T
Lead Temperature T

CC

IN
STRG
LEAD

Delay Devices if your application requires device
testing at a specific input condition.

POWER SUPPLY BYPASSING

The DDU4F relies on a stable power supply to
produce repeatable delays within the stated
tolerances. A 0.1uf capacitor from VCC to GND,
located as close as possible to the VCC pin, is
recommended. A wide VCC trace and a clean
ground plane should be used.

-0.3 7.0 V

-0.3 VDD+0.3 V

-55 150 C
300 C 10 sec

TABLE 2: DC ELECTRICAL CHARACTERISTICS

(0C to 70C, 4.75V to 5.25V)

PARAMETER SYMBOL MIN TYP MAX UNITS NOTES

High Level Output Voltage V
Low Level Output Voltage V
High Level Output Current I

Low Level Output Current I
High Level Input Voltage V
Low Level Input Voltage V
Input Clamp Voltage V
Input Current at Maximum

I

OH

OL

OH
OL

IH
IL
IK

IHH

Input Voltage
High Level Input Current I
Low Level Input Current I
Short-circuit Output Current I

IH
IL

OS

Output High Fan-out 25 Unit
Output Low Fan-out 12.5 Load

2.5 3.4 V VCC = MIN, IOH = MAX

0.35 0.5 V VCC = MIN, IOL = MAX

-1.0 mA

20.0 mA

2.0 V

0.8 V

-1.2 V VCC = MIN, II = I

0.1 mA VCC = MAX, VI = 7.0V
20

µA

-0.6 mA VCC = MAX, VI = 0.5V

-60 -150 mA VCC = MAX

VIH = MIN, VIL = MAX
VIH = MIN, VIL = MAX

IK

VCC = MAX, VI = 2.7V

Doc #97033 DATA DELAY DEVICES, INC. 2

12/10/97 Tel: [phone] Fax: [phone] http://www.datadelay.com