DS1073M-66 datasheet, PDF - EEWORLD Datasheet

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DS1073M-66: DescriptionLow-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers; CategoryThe embedded processor and controller Microcontrollers and processors; File Size261KB，18 Pages; ManufacturerDALLAS; Websitehttp://www.dalsemi.com

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DS1073M-66 Overview

Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers

DS1073M-66 Parametric

Parameter Name	Attribute value
Is it Rohs certified?	incompatible
package instruction	0.300 INCH, DIP-8
Reach Compliance Code	unknow
JESD-30 code	R-PDIP-T8
JESD-609 code	e0
Number of terminals	8
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Package body material	PLASTIC/EPOXY
Package shape	RECTANGULAR
Package form	IN-LINE
Certification status	Not Qualified
Maximum supply voltage	3.6 V
Minimum supply voltage	2.7 V
Nominal supply voltage	3 V
surface mount	NO
technology	CMOS
Temperature level	INDUSTRIAL
Terminal surface	Tin/Lead (Sn/Pb)
Terminal form	THROUGH-HOLE
Terminal location	DUAL
uPs/uCs/peripheral integrated circuit type	MICROPROCESSOR CIRCUIT
Base Number Matches	1

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DS1073

3V EconOscillator/Divider

www.maxim-ic.com

FEATURES

Dual fixed-frequency outputs (30kHz to

100MHz)

User-programmable on-chip dividers (from 1

to 513)

User-programmable on-chip prescaler (1, 2,

No external components

±0.5%

initial tolerance (commercial)

±1%

variation over commercial temperature

and voltage

Internal clock, external clock or crystal

reference options

2.7 to 3.6V supply

Power-down mode

Synchronous output gating

Industrial temp operation with relaxed

specifications

PIN ASSIGNMENT

I/O

OUT0

GND

OSCIN

XTAL

PDN/SELX

DS1073Z-XXX 150-mil SOIC

DS1073M-XXX 300-mil DIP

XXX = Frequency option

FREQUENCY OPTIONS

Part No.

DS1073M/Z-100

DS1073M/Z-80

DS1073M/Z-66

DS1073M/Z-60

Max O/P Freq.

100.000MHz

80.000MHz

66.667MHz

60.000MHz

DESCRIPTION

The DS1073 is a fixed-frequency oscillator requiring no external components for operation. Numerous

operating frequencies are possible in the range of approximately 27.3kHz to 100MHz through the use of

an on-chip programmable prescaler and divider.

The DS1073 features a master oscillator followed by a prescaler and then a programmable divider. The

prescaler and programmable divider are user-programmable with the desired values being stored in non-

volatile memory. This allows the user to buy an off the shelf component and program it on site prior to

board production. Design changes can be accommodated on the fly by simply programming different

values into the device (or reprogramming previously programmed devices).

The DS1073 is shipped from the factory configured for half the maximum operating frequency. Contact

the factory for specially programmed devices. As alternatives to the onboard oscillator an external clock

signal or a crystal may be used as a reference. The choice of reference source (internal or external) is

user-selectable at the time of programming (or on the fly if the SEL mode is chosen).

The DS1073 features a dual-purpose I/O pin. If the device is powered up in Program mode this pin can be

used to input serial data to the on chip registers. After a Write command this data is stored in non-volatile

memory. When the chip is subsequently powered up in operating mode these values are automatically

restored to the on-chip registers and the I/O pin becomes the oscillator output.

The DS1073 may be operated over either the commercial (T

= 0C to 70C) or industrial (T

= -40C to +

85C) temperature ranges. AC and DC Electrical Characteristics Tables for operation in both these

temperature ranges are given at the end of the data sheet.

1 of 18

090503

DS1073

PIN DESCRIPTIONS

IN/OUT Pin (I/O):

This pin is the main oscillator output, with a frequency determined by clock

reference, M and N dividers. Except in programming mode this pin is always an output. In programming

mode this pin is an input and output.

External Oscillator Input (OSCIN):

This pin can be used to supply an external reference frequency to

the device.

Crystal Oscillator Connection (XTAL):

A crystal can be connected between this pin and OSCIN to

provide an alternative frequency reference. The crystal must be used in fundamental mode. If a crystal is

not used this pin should be left open.

Output Enable Function (OE pin):

The DS1073 also features a “synchronous” output enable. When

OE is at a high logic level the oscillator free runs. When this pin is taken low OUT is held low,

immediately if OUT is already low, or at its next high-to-low transition if OUT is high. This prevents any

possible truncation of the output pulse width when the enable is used. While the output is disabled the

master oscillator continues to run (producing an output at OUT0, if the

EN0

bit = 0) but the internal

counters (/N) are reset. This results in a constant phase relationship between OE’s return to a high level

and the resulting OUT signal. When the enable is released OUT will make its first transition within one

to two clock periods of the master clock.

Power-Down/Select Function (

PDN

SELX

pin):

The Power-Down/Select (

PDN

SELX

) pin has a user-

selectable function determined by one bit (PDN bit) of the user-programmable memory. According to

which function is selected, this pin will be referred to as

PDN

SELX

If the Power-Down function is selected (PDN bit = 1) a low logic level on this pin can be used to make

the device stop oscillating (active low) and go into a reduced power consumption state. The “Enabling

Sequencer” circuitry will first disable OUT in the same way as when OE is used. Next OUT0 will be

disabled in a similar fashion. Finally the oscillator circuitry will be disabled. In this mode both outputs

will go into a high-impedance state.

The power consumption in the power-down state is much less than if OE is used because the internal

oscillator (if used) is completely powered down. Even if an external reference or a crystal is used all of

the on-chip buffers are powered down to minimize current drain. Consequently the device will take

considerably longer to recover (i.e., achieve stable oscillation) from a power-down condition than if the

OE is used.

If the Select function is chosen (PDN bit = 0) this pin can be used to switch between the internal

oscillator and an external reference (or crystal) on the fly. When this mode is chosen the E/

select bit is

overridden, a high logic level on

SELX

will select the internal oscillator, a low logic level will select the

external reference (or crystal oscillator).

Reference Output (OUT0 pin):

A reference output, OUT0, is also available from the output of the

reference select mux. This output is especially useful as a buffered output of a crystal defined master

frequency. OUT0 is unaffected by the OE pin, but is disabled in a glitchless fashion if the device is

powered down. If this output is not required it can be permanently disabled by setting the

EN0

bit to 1,

and there will be a corresponding reduction in overall power consumption.

3 of 18

DS1073M-66 Related Products

	DS1073M-66	DS1073	DS1073M-100	DS1073M-80	DS1073Z-60	DS1073M-60	DS1073Z-100	DS1073Z-66	DS1073Z-80
Description	Low-Power, Slew-Rate-Limited RS-485/RS-422 Transceivers	EconOscillator/Divider	EconOscillator/Divider	1000 Base-T, ±15kV ESD Protection LAN Switches	EconOscillator/Divider	3V EconOscillator/Divider	3V EconOscillator/Divider	EconOscillator/Divider	3V EconOscillator/Divider
Is it Rohs certified?	incompatible	-	incompatible	incompatible	incompatible	incompatible	incompatible	incompatible	incompatible
package instruction	0.300 INCH, DIP-8	-	0.300 INCH, DIP-8	0.300 INCH, DIP-8	0.150 INCH, SOIC-8	0.300 INCH, DIP-8	0.150 INCH, SOIC-8	0.150 INCH, SOIC-8	0.150 INCH, SOIC-8
Reach Compliance Code	unknow	-	unknow	unknow	unknow	unknow	unknow	unknown	unknow
JESD-30 code	R-PDIP-T8	-	R-PDIP-T8	R-PDIP-T8	R-PDSO-G8	R-PDIP-T8	R-PDSO-G8	R-PDSO-G8	R-PDSO-G8
JESD-609 code	e0	-	e0	e0	e0	e0	e0	e0	e0
Number of terminals	8	-	8	8	8	8	8	8	8
Maximum operating temperature	85 °C	-	85 °C	85 °C	85 °C	85 °C	85 °C	85 °C	85 °C
Minimum operating temperature	-40 °C	-	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C
Package body material	PLASTIC/EPOXY	-	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
Package shape	RECTANGULAR	-	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR
Package form	IN-LINE	-	IN-LINE	IN-LINE	SMALL OUTLINE	IN-LINE	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE
Certification status	Not Qualified	-	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified
Maximum supply voltage	3.6 V	-	3.6 V	3.6 V	3.6 V	3.6 V	3.6 V	3.6 V	3.6 V
Minimum supply voltage	2.7 V	-	2.7 V	2.7 V	2.7 V	2.7 V	2.7 V	2.7 V	2.7 V
Nominal supply voltage	3 V	-	3 V	3 V	3 V	3 V	3 V	3 V	3 V
surface mount	NO	-	NO	NO	YES	NO	YES	YES	YES
technology	CMOS	-	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS
Temperature level	INDUSTRIAL	-	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL
Terminal surface	Tin/Lead (Sn/Pb)	-	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)
Terminal form	THROUGH-HOLE	-	THROUGH-HOLE	THROUGH-HOLE	GULL WING	THROUGH-HOLE	GULL WING	GULL WING	GULL WING
Terminal location	DUAL	-	DUAL	DUAL	DUAL	DUAL	DUAL	DUAL	DUAL
uPs/uCs/peripheral integrated circuit type	MICROPROCESSOR CIRCUIT	-	MICROPROCESSOR CIRCUIT	MICROPROCESSOR CIRCUIT	MICROPROCESSOR CIRCUIT	MICROPROCESSOR CIRCUIT	MICROPROCESSOR CIRCUIT	MICROPROCESSOR CIRCUIT	MICROPROCESSOR CIRCUIT
Maker	-	-	DALLAS	DALLAS	DALLAS	DALLAS	DALLAS	DALLAS	DALLAS

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