Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsMicrocontrollers, Microprocessors & QuartzesMAX7375AXR185+T

General Description

The MAX7375 is a silicon oscillator, intended as a low-cost

improvement replacing ceramic resonators, crystals, and

crystal oscillator modules used as the clock source for micro-

controllers and UARTs in 3V, 3.3V, and 5V applications.

The MAX7375 is a fully integrated oscillator, supplied at

specific factory-trimmed frequencies with a rail-to-rail 50%

duty cycle square-wave output. The oscillator frequency is

generated directly without the use of a phase-locked loop

(PLL). No additional components are used to set or adjust

the frequency.

Unlike typical crystal and ceramic resonator oscillator circuits,

the MAX7375 is highly resistant to vibration and EMI. The

high output drive current and absence of high-impedance

nodes also makes the oscillator less susceptible to dirty

or humid operating conditions. With a wide operating tem-

perature range, the oscillator is a good choice for demanding

home appliance environments.

Available in 3-pin space-saving SC70 package, the

MAX7375 is offered in standard and nonstandard factory-

set frequencies ranging from 600kHz to 9.99MHz. See

the MAX7381 data sheet for frequencies ≥ 10MHz. The

MAX7375’s standard operating temperature range is

-40°C to +125°C. See the Applications Information sec-

tion for extended operating temperature range.

Applications

Features

● 2.7V to 5.5V Operation

● Factory-Trimmed Oscillator (600kHz to 9.99MHz)

● No External Components Required

● ±10mA Output Drive Current

● 2% Initial Accuracy

● ±50ppm/°C Temp Drift

● Fast Startup Time: 5µs

● 40% to 60% Maximum Duty Cycle

● 5ns Output Rise and Fall Time-Low EMI

● Very Low EMI Susceptibility-No High-Impedance

Nodes

● Very Low Jitter: 160ps

P-P

at 8MHz

● Tiny Surface-Mount Package (SC70)

● -40°C to +125°C Temperature Range

19-3060; Rev 4; 4/14

● White Goods

● Appliances and Controls

● Hand-Held Products

● Portable Equipment

● Microcontroller Systems

Note: The MAX7375 is available in factory-set frequencies

from 600kHz to 9.99MHz. There are seven standard versions

(1MHz, 1.84MHz, 3.58MHz, 3.69MHz, 4MHz, 4.19MHz, and

8MHz, as shown in the Selector Guide) with a required 2.5k

order increment. Nonstandard frequencies are also available

with a required 10k order increment. For nonstandard versions,

contact factory for availability and ordering information. All ver-

sions available in tape-and-reel only.

PART TEMP RANGE PIN-PACKAGE

MAX7375AXR105-T -40°C to +125°C 3 SC70-3

MAX7375AXR185-T -40°C to +125°C 3 SC70-3

MAX7375AXR365-T -40°C to +125°C 3 SC70-3

MAX7375AXR375-T -40°C to +125°C 3 SC70-3

MAX7375AXR405-T -40°C to +125°C 3 SC70-3

MAX7375AXR425-T -40°C to +125°C 3 SC70-3

MAX7375AXR805-T -40°C to +125°C 3 SC70-3

MAX7375

OSC1

OSC2

2.7V TO 5.5V

V+

GND

CLOCK

µC

Pin Configuration and Selector Guide appear at end of data

sheet.

MAX7375 3-Pin Silicon Oscillator

Typical Application Circuit

Ordering Information

Summary of content (7 pages)

PAGE 1
MAX7375 3-Pin Silicon Oscillator General Description The MAX7375 is a silicon oscillator, intended as a low-cost improvement replacing ceramic resonators, crystals, and crystal oscillator modules used as the clock source for microcontrollers and UARTs in 3V, 3.3V, and 5V applications. Features ●● 2.7V to 5.5V Operation ●● Factory-Trimmed Oscillator (600kHz to 9.
PAGE 2
MAX7375 3-Pin Silicon Oscillator Absolute Maximum Ratings V+ to GND................................................................-0.3V to +6V CLOCK to GND............................................-0.3V to (V+ + 0.3V) Continuous Power Dissipation (TA = +70°C) 3-Pin SC70 (derate 2.9mW/°C over +70°C).................235mW Operating Temperature Range.......................... -55°C to +135°C Junction Temperature.......................................................+150°C Storage Temperature Range.......
PAGE 3
MAX7375 3-Pin Silicon Oscillator Typical Operating Characteristics (V+ = 5V, TA = +25°C, CL = 10pF, 8MHz output, unless otherwise noted.) 53 51 50 49 48 47 51 49 47 45 -40 -25 -10 5 20 35 50 65 80 95 110 125 2.7 4.1 4.8 2.5 2.0 MAX7375 toc05 1.000 0.998 0.996 0.994 1.0 V+ = 2.7V -40 -25 -10 5 20 35 50 65 80 95 110 125 4.8 5.5 0.990 FREQUENCY vs. TEMPERATURE 1.020 1.015 1.010 1.005 1.000 0.995 0.990 0.985 2.7 3.4 4.1 4.8 5.5 0.
PAGE 4
MAX7375 3-Pin Silicon Oscillator Typical Operating Characteristics (continued) (V+ = 5V, TA = +25°C, CL = 10pF, 8MHz output, unless otherwise noted.) CLOCK OUTPUT WAVEFORM WITH CL = 50pF CLOCK OUTPUT WAVEFORM WITH CL = 100pF MAX7375 toc10 MAX7375 toc11 CLOCK 1V/div CLOCK 1V/div V+ = 3.3V V+ = 3.3V 40ns/div 40ns/div Pin Description PIN SC70 NAME 1 V+ 2 CLOCK 3 GND FUNCTION Positive Supply Voltage Clock Output. Output is push-pull.
PAGE 5
MAX7375 3-Pin Silicon Oscillator Applications Information Extended Temperature Operation Interfacing to a Microcontroller Clock Input The MAX7375 clock output is a push-pull, CMOS, logic output, which directly drives any microprocessor (µP) or microcontroller (µC) clock input. There are no impedancematching issues when using the MAX7375. Operate the MAX7375 and microcontroller (or other clock input device) from the same supply voltage level.
PAGE 6
MAX7375 3-Pin Silicon Oscillator Package Information For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. PACKAGE TYPE PACKAGE CODE DOCUMENT NO. LAND PATTERN NO. 3 SC70 X3-2 21-0075 90-0208 www.maximintegrated.
PAGE 7
MAX7375 3-Pin Silicon Oscillator Revision History REVISION NUMBER REVISION DATE 0 10/03 1 PAGES CHANGED DESCRIPTION Initial release — — — — 2 — — 3 12/07 Removed all references to MAX7375AUR_ and SOT23 package 4 4/14 Removed automotive reference from General Description and Applications — 1, 2, 4, 5 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.