DADD DLO31F-9A2, DLO31F-9, DLO31F-8MD4, DLO31F-8MD1, DLO31F-8M Datasheet

DLO31F

Doc #98001 DATA DELAY DEVICES, INC. 1

3/17/98 3 Mt. Prospect Ave. Clifton, NJ 07013

TTL-INTERFACED, GATED
DELAY LINE OSCILLATOR
(SERIES DLO31F)

FEATURES PACKAGES

• Continuous or keyable wave train

• Synchronizes with arbitrary gating signal

• Fits standard 14-pin DIP socket

• Low profile

• Auto-insertable

• Input & outputs fully TTL interfaced & buffered

• Available in frequencies from 2MHz to 40MHz

FUNCTIONAL DESCRIPTION

The DLO31F-series device is a gated delay line oscillator. The device
produces a stable square wave which is synchronized with the falling edge
of the Gate Input (GB). The frequency of oscillation is given by the device
dash number (See Table). The two outputs (C1,C2) are in phase during
oscillation, but return to opposite logic levels when the device is disabled.

SERIES SPECIFICATIONS

• Frequency accuracy: 2%

• Inherent delay (TE0): 5.5ns typical

• Output skew: 3.5ns typical

• Output rise/fall time: 2ns typical

• Supply voltage: 5VDC ± 5%

• Supply current: 40ma typical (7ma when disabled)

• Operating temperature: 0° to 70° C

• Temperature coefficient: 100 PPM/°C (See text)

GATE
(GB)

CLOCK 2
(C2)

Figure 1: Timing Diagram

CLOCK 1
(C1)

t

EO

1/f

0

t

DO

t

CS

t

GR

1998 Data Delay Devices

data

delay
devices,

inc.



3

1

2
3
4
5
6
7

14

13
12
11
10

9
8

C1

N/C
N/C
N/C
N/C
N/C

GND

VCC

N/C
N/C
N/C
C2
N/C
GB

14

10

8

1

7

C1

GND

VCC

C2

GB

DLO31F-xx DIP
DLO31F-xxA2 Gull-Wing
DLO31F-xxB2 J-Lead
DLO31F-xxM Military DIP

Military SMD
DLO31F-xxMD1
DLO31F-xxMD4

PIN DESCRIPTIONS

GB Gate Input
C1 Clock Output 1
C2 Clock Output 2
VCC +5 Volts
GND Ground

DASH NUMBER

SPECIFICATIONS

Part

Number

Frequency

(MHz)

DLO31F-2

2.0 ± 0.04

DLO31F-2.5

2.5 ± 0.05

DLO31F-3

3.0 ± 0.06

DLO31F-3.5

3.5 ± 0.07

DLO31F-4

4.0 ± 0.08

DLO31F-4.5

4.5 ± 0.09

DLO31F-5

5.0 ± 0.10

DLO31F-5.5

5.5 ± 0.11

DLO31F-6

6.0 ± 0.12

DLO31F-7

7.0 ± 0.14

DLO31F-8

8.0 ± 0.16

DLO31F-9

9.0 ± 0.18

DLO31F-10

10 ± 0.20

DLO31F-12

12 ± 0.24

DLO31F-14

14 ± 0.28

DLO31F-15

15 ± 0.30

DLO31F-20

20 ± 0.40

DLO31F-25

25 ± 0.50

DLO31F-30

30 ± 0.60

DLO31F-35

35 ± 0.70

DLO31F-40

40 ± 0.80

NOTE: Any dash number
between 2 and 40 not shown

is also available.

DLO31F

Doc #98001 DATA DELAY DEVICES, INC. 2

3/17/98 Tel: [phone] Fax: [phone] http://www.datadelay.com

APPLICATION NOTES

THERMAL STABILITY

The delay line used internally to develop the clock
signals in the DLO31F has a thermal coefficient
of 100ppm/C. For low frequency units, this is also
the thermal coefficient of the output frequency.
For higher frequency units, however, other
internal effects must be considered, and the
actual thermal coefficient may be somewhat
higher.

POWER SUPPLY BYPASSING

The DLO31F relies on a stable power supply to
produce a repeatable frequency 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.

DEVICE SPECIFICATIONS

TABLE 1: ABSOLUTE MAXIMUM RATINGS

PARAMETER SYMBOL MIN MAX UNITS NOTES

DC Supply Voltage V

CC

-0.3 7.0 V

Input Pin Voltage V

IN

-0.3 VDD+0.3 V

Storage Temperature T

STRG

-55 150 C

Lead Temperature T

LEAD

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

OH

2.5 3.4 V VCC = MIN, IOH = MAX
VIH = MIN, VIL = MAX

Low Level Output Voltage V

OL

0.35 0.5 V VCC = MIN, IOL = MAX
VIH = MIN, VIL = MAX

High Level Output Current I

OH

-1.0 mA

Low Level Output Current I

OL

20.0 mA

High Level Input Voltage V

IH

2.0 V

Low Level Input Voltage V

IL

0.8 V

Input Clamp Voltage V

IK

-1.2 V VCC = MIN, II = I

IK

Input Current at Maximum
Input Voltage

I

IHH

0.1 mA VCC = MAX, VI = 7.0V

High Level Input Current I

IH

20

µA

VCC = MAX, VI = 2.7V

Low Level Input Current I

IL

-0.6 mA VCC = MAX, VI = 0.5V

Short-circuit Output Current I

OS

-60 -150 mA VCC = MAX
Output High Fan-out 25 Unit
Output Low Fan-out 12.5 Load

TABLE 3: AC ELECTRICAL CHARACTERISTICS

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

PARAMETER SYMBOL MIN TYP MAX UNITS

Enable to Clock On (Inherent Delay) t

EO

3.5 5.5 7.0 ns

Disable to Clock Off t

DO

3.5 5.5 7.0 ns

Clock Skew t

CS

2.5 3.5 4.5 ns

Gate Recovery Time t

GR

50 % of Clock Period