Datadelay MDU28C-45, MDU28C-40, MDU28C-40A1, MDU28C-40B1, MDU28C-40M Datasheet

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MDU28C

DUAL, HCMOS-INTERFACED

data



VDD

FIXED DELAY LINE (SERIES MDU28C)

delay devices, inc.

FEATURES PACKAGES

• Two independent delay lines

• Fits standard 8-pin DIP socket

• Low profile

• Auto-insertable

N/C

GND

1 2

3 4

• Input & outputs fully CMOS interfaced & buffered

• 10 T2L fan-out capability

MDU28C-xx DIP MDU28C-xxA1 Gull-Wing MDU28C-xxB1 J-Lead MDU28C-xxM Military DIP

FUNCTIONAL DESCRIPTION

The MDU28C-series device is a 2-in-1 digitally buffered delay line. The signal inputs (I1-I2) are reproduced at the outputs (O1-O2), shifted in time by an amount determined by the device dash number (See Table). The delay lines function completely independently of each other.

VDD

N/C

N/C N/C N/C

N/C

GND

PIN DESCRIPTIONS

I1-I2 Signal Inputs O1-O2 Signal Outputs VDD +5 Volts GND Ground

Military SMD MDU28C-xxMD1 MDU28C-xxMD4

N/C O1 N/C N/C N/C O2

SERIES SPECIFICATIONS

• Minimum input pulse width: 100% of total delay

• Output rise time: 8ns typical

• Supply voltage: 5VDC ± 5%

• Supply current: I I

= 40µa typical

CCL

= 45ma typical

CCH

• Operating temperature: 0° to 70° C

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

O2O1

100%

VDD GNDI1 I2

Functional block diagram

DASH NUMBER SPECIFICATIONS

Part

Number

MDU28C-10 MDU28C-12 MDU28C-16 MDU28C-20 MDU28C-25 MDU28C-30 MDU28C-35 MDU28C-40 MDU28C-45 MDU28C-50 MDU28C-60 MDU28C-75 MDU28C-100

NOTE: Any dash number between 10 and 100

not shown is also available.

Delay Per

Line (ns)

10 ± 2.0 12 ± 2.0 16 ± 2.0 20 ± 2.0 25 ± 2.0 30 ± 2.0 35 ± 2.0 40 ± 2.0 45 ± 2.2 50 ± 2.5 60 ± 3.0 75 ± 3.7

100 ± 5.0

1997 Data Delay Devices

Doc #97040 DATA DELAY DEVICES, INC. 1

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

MDU28C

APPLICATION NOTES

HIGH FREQUENCY RESPONSE

The MDU28C 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 100% of the total delay and periods as small as 200% 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

IN STRG LEAD

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

POWER SUPPLY BYPASSING

The MDU28C 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

IH IL

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 #97040 DATA DELAY DEVICES, INC. 2

12/12/97 Tel: 973-773-2299 Fax: 973-773-9672 http://www.datadelay.com

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