data delay devices DDU4C Service Manual

DDU4C

data



3

1

14

IN

VDD

查询DDU4C供应商

5-TAP, HCMOS-INTERFACED
FIXED DELAY LINE
(SERIES DDU4C)

delay
devices,

FEATURES PACKAGES

IN

• Five equally spaced outputs

1

• Fits standard 8-pin DIP socket

• Low profile

T2

4

• Auto-insertable

T4

• Input & outputs fully CMOS interfaced & buffered

• 10 T2L fan-out capability

DDU4C-xx Comm.
DDU4C-xxM Military

GND

6
7

DIP

FUNCTIONAL DESCRIPTION

The DDU4C-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). 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 the total delay.

VCC

14

T1

12

T3

10

T5

8

N/C
N/C

T2

N/C

T4

GND

DDU4C-xxA2 Comm.
DDU4C-xxB2 Comm.
DDU4C-xxMC2 Military

PIN DESCRIPTIONS

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

2
3
4
5
6
7

SMD

inc.

13
12
11
10

9
8

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

SERIES SPECIFICATIONS

• Minimum input pulse width: 20% of total delay

• Output rise time: 8ns typical

• Supply voltage: 5VDC ± 5%

• Supply current: I

I

= 40µa typical

CCL

= 10ma typical

CCH

• Operating temperature: 0° to 70° C

• Temp. coefficient of total delay: 300 PPM/°C

20% 20% 20% 20% 20%

VDD GNDIN T1 T2 T3 T4 T5

DDU4C Functional diagram

DASH NUMBER SPECIFICATIONS

Part

Number

DDU4C-5050
DDU4C-5060
DDU4C-5075
DDU4C-5100
DDU4C-5125
DDU4C-5150
DDU4C-5200
DDU4C-5250
DDU4C-5300
DDU4C-5400
DDU4C-5500

NOTE: Any dash number between 5050 and 5500

not shown is also available.

Total

Delay (ns)

50 ± 2.5 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)

1997 Data Delay Devices

Doc #97034 DATA DELAY DEVICES, INC. 1

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

DDU4C

APPLICATION NOTES

HIGH FREQUENCY RESPONSE

The DDU4C 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

DD

IN
STRG
LEAD

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

POWER SUPPLY BYPASSING

The DDU4C relies on a stable power supply to
produce repeatable delays within the stated
tolerances. A 0.1uf capacitor from VDD to GND,
located as close as possible to the VDD pin, is
recommended. A wide VDD 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

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 Current I

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

OH

OL

OH
OL

IH
IL

IH

3.98 4.4 V VDD = 5.0, IOH = MAX

0.15 0.26 V VDD = 5.0, IOL = MAX

3.15 V

-4.0 mA

4.0 mA

1.35 V

0.10

µA

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

VDD = 5.0

Doc #97034 DATA DELAY DEVICES, INC. 2

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