MAX7394ATTLY+T

MAX7393/MAX7394 Precision Silicon Oscillators with Enable or Autoenable General Description The MAX7393/MAX7394 precision silicon oscillators replace crystals, ceramic resonators, and crystal oscillator modules in systems with a +2.4V to +3.6V operating supply voltage range. The MAX7393/MAX7394 consist of a temperature-compensated precision oscillator with enable (MAX7394) or autoenable (MAX7393). The MAX7393/MAX7394 are supplied at specific frequencies, just like crystals and resonators. Output frequency accuracy is guaranteed to be within ±0.25% (TDFN) and ±1.3% (μDFN) (0°C to +85°C) and ±1.0% (TDFN) and ±1.8% (μDFN) over the -40°C to +125°C temperature range. The small size and robust operation of the MAX7393/ MAX7394 make them ideal for space-constrained or environmentally demanding applications where high accuracy is required. The high accuracy of the MAX7393/ MAX7394 is ideal for use in USB applications, computers, and white goods. The MAX7393/MAX7394 are available in 6-pin, 3mm x 3mm TDFN and 2mm x 2mm μDFN packages. They are specified for the -40°C to +125°C temperature range. Applications ●● USB ●● CAN Nodes ●● Computers ●● Handheld Products ●● White Goods Typical Application Circuits 2.4V TO 3.6V VCC2 VCC CLOCK MAX7393 I.C. GND 3 2 CLKIN 5 OSC1 4 OSC2 5 OSC1 ●● ±0.25% (TDFN) and ±1.3% (μDFN) Total Accuracy for 0°C to +85°C ●● ±1.0% (TDFN) and ±1.8% (μDFN) Total Accuracy for -40°C to +125°C ●● Resistant to Humidity and Vibration ●● 12mA Operating Current (48MHz Version) ●● 5ns Output Rise/Fall Time ●● 40% to 60% Maximum Duty Cycle ●● No External Components Required ●● +2.4V to +3.6V Operation ●● Available Factory-Set Frequencies from 922kHz to 48MHz ●● Space-Saving TDFN and μDFN Surface-Mount Packages Ordering Information PART TEMP RANGE PIN-PACKAGE MAX7393 ALT_ _+ -40°C to +125°C 6 μDFN MAX7393ATT_ _+ -40°C to +125°C 6 μDFN MAX7394ALT_ _+ -40°C to +125°C 6 μDFN MAX7394ATT_ _+ -40°C to +125°C 6 μDFN *The two-letter frequency suffix following the part number is found in the Selector Guide. 6 1 Features µC +Denotes a lead(Pb)-free/RoHS-compliant package. Note: The MAX7394 is available in factory-set frequencies from 922kHz to 48MHz. The MAX7393 is available in factoryset frequencies from 922kHz to 20MHz. There are 10 standard frequencies (see 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. 2.4V TO 3.6V 6 1 4 VCC2 VCC CLOCK µC MAX7394 OSC2 ENABLE 19-3876; Rev 1; 4/14 I.C. GND 3 2 Selector Guide and Pin Configurations appear at end of data sheet. MAX7393/MAX7394 Precision Silicon Oscillators with Enable or Autoenable Absolute Maximum Ratings VCC, VCC2 to GND...............................................-0.3V to +4.0V CLOCK, CLKIN, ENABLE, I.C. to GND... .-0.3V to (VCC + 0.3V) CLOCK Output Current.....................................................±50mA Continuous Power Dissipation (TA = +70°C) 6-Pin μDFN (derate 4.5mW/°C over +70°C)................358mW 6-Pin TDFN (derate 18.2mW/°C over +70°C) ...........1455mW Operating Temperature Range.......................... -40°C to +125°C Junction Temperature.......................................................+150°C Storage Temperature Range............................. -65°C to +150°C Lead Temperature (soldering, 10s).................................. +300°C Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Electrical Characteristics (VCC = VCC2 = +2.4V to +3.6V, CL = 10pF, TA = -40°C to +125°C, unless otherwise noted. Typical values are at VCC = VCC2 = +3.3V, TA = +25°C, unless otherwise noted.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DC CHARACTERISTICS Operating Supply Voltage VCC 2.4 3.6 V Operating Output Supply Voltage VCC2 2.4 3.6 V Total Operating Supply Current (Note 2) Total Shutdown Supply Current ITOT ISHDN 922kHz, MAX739_ _ _ _LY 4.4 4MHz, MAX739_ _ _ _RD 5.4 8MHz, MAX739_ _ _ _TP 5.8 16MHz, MAX739_ _ _ _WB 6.5 32MHz, MAX7394_ _ _ YN 9.2 33MHz, MAX7394_ _ _ YQ 9.5 48MHz, MAX7394_ _ _ ZY 12 Oscillator disabled, CLKIN = high (MAX7393), ENABLE = low (MAX7394) (Note 2) 1 2 mA µA LOGIC INPUTS (ENABLE, CLKIN) Logic Input High Voltage VIH Logic Input Low Voltage VIL 0.7 x VCC2 V 0.3 x VCC2 V CLOCK OUTPUT Output High Voltage VOH VCC2 ≥ 2.4V, ISOURCE = 5mA Output Low Voltage VOL VCC2 ≥ 2.4V, ISINK = 5mA VCC2 - 0.3 V 0.3 V Output Rise Time tR (Note 3) 5 ns Output Fall Time tF (Note 3) 5 ns Duty Cycle (Note 3) 47 % Startup Time Time for output to stabilize 2 ms Output Jitter (Note 3) www.maximintegrated.com Peak-to-peak jitter, 16MHz (MAX7394) 180 Peak-to-peak jitter, 48MHz (MAX7394) 140 ps Maxim Integrated │  2 MAX7393/MAX7394 Precision Silicon Oscillators with Enable or Autoenable Electrical Characteristics (continued) (VCC = VCC2 = +2.4V to +3.6V, CL = 10pF, TA = -40°C to +125°C, unless otherwise noted. Typical values are at VCC = VCC2 = +3.3V, TA = +25°C, unless otherwise noted.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS FREQUENCY ACCURACY Clock Frequency Coefficient of Temperature VCC = VCC2 = 3.3V Clock Frequency Coefficient of Supply Voltage TA = +25°C TA = 0°C to +70°C ±20 TA = -40°C to +125°C ±50 0.1 TA = 0°C to +85°C, VCC = ±10% Total Accuracy VCC = VCC2 = 3.3V ppm/°C 0.15 TDFN (Note 4) ±0.25 µDFN (Note 5) ±1.3 TDFN TA = -40°C to (Note 4) +125°C, VCC = ±10% µDFN (Note 5) %/V % ±1.0 ±1.8 Note 1: All parameters are production tested at TA = +25°C. Specifications over temperature are guaranteed by design and characterization. Note 2: The total supply current is the sum of ICC and ICC2. Note 3: Guaranteed by design and characterization. Not production tested. Note 4: Output frequency is production tested at TA = +25°C and TA = +85°C. Note 5: Output frequency is production tested at TA = +25°C. www.maximintegrated.com Maxim Integrated │  3 MAX7393/MAX7394 Precision Silicon Oscillators with Enable or Autoenable Typical Operating Characteristics (VCC = VCC2 = 3.3V, TA = +25°C, MAX7394, 48MHz output, unless otherwise noted.) 54 50 48 46 52 50 48 46 44 44 42 42 40 40 -40 -25 -10 5 20 35 50 65 80 95 110 125 TEMPERATURE (°C) 4 2 2.6 2.8 3.0 3.2 SUPPLY VOLTAGE (V) 3.6 0.997 0.996 0.995 7 7 6 5 VCC = VCC2 = +3.3V VCC = VCC2 = +2.4V 4 3 2 0 3.6 0.998 2.4 2.6 2.8 3.0 3.2 SUPPLY VOLTAGE (V) 3.4 -40 -25 -10 5 20 35 50 65 80 95 110 125 TEMPERATURE (°C) NORMALIZED FREQUENCY vs. TEMPERATURE 1.002 3.6 1.000 0.998 0.996 0.994 0.992 0.990 -40 -25 -10 5 20 35 50 65 80 95 110 125 TEMPERATURE (°C) MAX7393 SETTLING TIME FROM START MAX7393 toc08 VCC = VCC2 = +3.6V 8 3.4 0.999 TOTAL SUPPLY CURRENT vs. FREQUENCY 9 TOTAL SUPPLY CURRENT (mA) 3.4 2.8 3.0 3.2 SUPPLY VOLTAGE (V) NORMALIZED FREQUENCY vs. SUPPLY VOLTAGE VCC = VCC2 = +3.3V MAX7393 toc07 2.4 2.6 MAX7393/4 toc05 NORMALIZED FREQUENCY 6 0 2.4 1.000 MAX7393 toc04 8 8 1 TOTAL SUPPLY CURRENT vs. SUPPLY VOLTAGE 10 VCC = VCC2 = +3.6V MAX7393/4 toc06 52 9 MAX7393/4 toc03 56 10 TOTAL SUPPLY CURRENT (mA) 54 58 DUTY CYCLE (%) DUTY CYCLE (%) 56 MAX7393/4 toc01 58 TOTAL SUPPLY CURRENT (mA) 60 MAX7393/4 toc01 60 TOTAL SUPPLY CURRENT vs. TEMPERATURE DUTY CYCLE vs. SUPPLY VOLTAGE NORMALIZED FREQUENCY DUTY CYCLE vs. TEMPERATURE (SEE FIGURE 1) 20MHz ON/OFF 2V/div 6 5 4 CLOCK 2V/div VCC = VCC2 = +2.4V 3 2 1 0 0 6 www.maximintegrated.com 12 18 24 30 36 FREQUENCY (MHz) 42 48 400µs/div Maxim Integrated │  4 MAX7393/MAX7394 Precision Silicon Oscillators with Enable or Autoenable Typical Operating Characteristics (continued) (VCC = VCC2 = 3.3V, TA = +25°C, MAX7394, 48MHz output, unless otherwise noted.) CLOCK OUTPUT WAVEFORM WITH CL = 10pF MAX7394 SETTLING TIME FROM START MAX7393 toc10 MAX7393 toc09 ENABLE 2V/div CLOCK 1V/div CLOCK 2V/div 10ns/div 400µs/div Pin Description PIN NAME FUNCTION MAX7393 MAX7394 1 1 VCC Positive Supply Voltage Input. Bypass VCC to GND with 0.1µF capacitors placed as close to the device as possible. Connect VCC to VCC2. 2 2 GND Ground 3 3 I.C. Internally Connected. Connect I.C. to GND. Do not connect I.C. to any other input or output. Do not leave I.C. unconnected. 4 — CLKIN Clock Input. Connect CLKIN to a returned clock signal source (see the Autoenable (CLKIN, MAX7393) section). 5 5 CLOCK Clock Output. CLOCK is a rail-to-rail, push-pull output. 6 6 VCC2 — 4 ENABLE Enable Input. Drive ENABLE low to place the MAX7394 in shutdown mode. Drive ENABLE high for normal operation. — — EP Exposed Pad (TDFN Version Only). Connect EP to ground. Do not connect EP to any other input or output. www.maximintegrated.com Positive Supply Voltage Input for Output Driver. Bypass VCC2 to GND with a 0.1µF capacitor placed as close to the device as possible. Connect VCC2 to VCC. Maxim Integrated │  5 MAX7393/MAX7394 Precision Silicon Oscillators with Enable or Autoenable Detailed Description The MAX7393/MAX7394 precision silicon oscillators replace crystals, ceramic resonators, and crystal oscillator modules in systems with a +2.4V to +3.6V operating supply voltage range. The MAX7393/MAX7394 consist of a temperature-compensated precision oscillator with enable (MAX7394) or autoenable (MAX7393). The ENABLE input on the MAX7394 manually enables or disables the oscillator. The CLKIN input on the MAX7393 monitors a returned clock signal to automatically enable or disable the MAX7393 oscillator. The MAX7393/MAX7394 are supplied at specific frequencies, like crystals and resonators. A variety of popular standard frequencies are available (see the Selector Guide). Output frequency accuracy is guaranteed to be within ±0.25% (TDFN) and ±1.3% (μDFN) (0°C to +85°C) and ±1.0% (TDFN) and ±1.8% (μDFN) over the -40°C to +125°C temperature range. No external components are required to generate the specific frequency. ENABLE (MAX7394) The ENABLE input on the MAX7394 turns the oscillator on and off. Drive ENABLE to a logic-high for normal operation. Drive ENABLE to a logic-low to place the device in shutdown mode. During shutdown, the oscillator is turned off, and the CLOCK output is weakly driven high with an internal 10kΩ to VCC2. In shutdown mode, the total supply current reduces to less than 2μA. Autoenable (CLKIN, MAX7393) The MAX7393 features a CLKIN input that automatically enables or disables the oscillator by sensing the condition of a returned clock signal. The MAX7393 is automatically enabled whenever an active inversion function is sensed between CLOCK and CLKIN. When no inversion function is detected, the MAX7393 automatically enters shutdown mode. During shutdown, the oscillator is turned off, the CLKIN input is weakly driven to its last state, and the CLOCK output is weakly driven to the logic-level in CLKIN. The CLKIN input relies on an external inversion function, typically provided by a microcontroller’s clock generator, to provide an inverted version of the CLOCK output signal. The MAX7393 interprets high/low voltage or a constant high-impedance node on CLKIN as a disable signal. Figure 1 shows a test circuit to enable or disable the MAX7393. One input of the NAND gate connects to the CLOCK output of the MAX7393, and the other input is driven with a logic level. A logic-high level enables the oscillator and a logic-low level disables the oscillator. See the Typical Operating Characteristics for typical startup performance of the MAX7393. www.maximintegrated.com CLOCK MAX7393 ON/OFF CLKIN Figure 1. Test Circuit to Enable or Disable the MAX7393 Oscillator Oscillator (CLOCK) The CLOCK output is a push-pull, CMOS logic output that is capable of driving a ground-connected 1kΩ load or a positive supply connected 500Ω load to within 300mV of either supply rail. There are no impedancematching issues when using the MAX7393/MAX7394 CLOCK output. A typical startup characteristic is shown in the Typical Operating Characteristics. Output Jitter The MAX7393/MAX7394s’ jitter performance is given in the Electrical Characteristics table as a peak-to-peak value. Applications Information Interfacing to a Microcontroller clock Input The MAX7393/MAX7394 CLOCK output is a push-pull, CMOS logic output that directly drives any microprocessor (μP) or microcontroller (μC) clock input. There are no impedance-matching issues when using the MAX7393/ MAX7394. Operate the MAX7393/MAX7394 and microcontroller from the same supply voltage level of VCC2 (see the Power-Supply Considerations section for more details). Refer to the microcontroller’s data sheet for clock input compatibility with external clock signals. The MAX7393/MAX7394 require no biasing components or load capacitance. When using the MAX7393/MAX7394 to retrofit a crystal oscillator, remove all biasing components from the oscillator input. Power-Supply Considerations The MAX7393/MAX7394 operate with power-supply voltages in the +2.4V to +3.6V range. Connect VCC and VCC2 to the same supply voltage level as the device receiving the clock. Proper power-supply decoupling is required to maintain the power-supply rejection performance of the MAX7393/MAX7394. Connect 0.1μF surface-mount ceramic capacitors from VCC to VCC2 to GND. Position these bypass capacitors as close to VCC and VCC2 as possible. A larger VCC2 bypass capacitor value is recommended if the MAX7393/MAX7394 are to operate with a large capacitive load. Use a bypass capacitor value on VCC2 at least 1000 times that of the output load capacitance. Maxim Integrated │  6 MAX7393/MAX7394 Precision Silicon Oscillators with Enable or Autoenable Pin Configurations TOP VIEW OF BOTTOM LEADS Selector Guide VCC2 CLOCK CLKIN 6 5 4 MAX7393 + 1 VCC 6 PACKAGE TOP MARK MAX7393ATTLY 922kHz 6 TDFN +ANP MAX7393ALTLY 922kHz 6 μDFN +ABO MAX7393ATTMG 1MHz 6 TDFN +ANQ MAX7393ALTMG 1MHz 6 μDFN +ABP 6 TDFN +ANR 3 MAX7393ATTRD 4MHz GND I.C. MAX7393ALTRD 4MHz 6 μDFN +ABQ MAX7393ATTTP 8MHz 6 TDFN +ANS MAX7393ALTTP 8MHz 6 μDFN +ABR MAX7393ATTWB 16MHz 6 TDFN +AMN MAX7393ALTWB 16MHz 6 μDFN +AAR MAX7393ATTWV 20MHz 6 TDFN +AMO MAX7393ALTWV 20MHz 6 μDFN +AAS MAX7394ATTLY 922kHz 6 TDFN +ANV MAX7394ALTLY 922kHz 6 μDFN +ABU MAX7394ATTMG 1MHz 6 TDFN +ANW MAX7394ALTMG 1MHz 6 μDFN +ABV MAX7394ATTRD 4MHz 6 TDFN +ANX MAX7394ALTRD 4MHz 6 μDFN +ABW MAX7394ATTTP 8MHz 6 TDFN +ANY MAX7394ALTTP 8MHz 6 μDFN +ABX MAX7394ATTWB 16MHz 6 TDFN +AMU MAX7394ALTWB 16MHz 6 μDFN +AAY 6 TDFN +AMV CLOCK CLKIN 5 4 *EP MAX7393 + 1 2 3 VCC GND I.C. TDFN *EXPOSED PAD. CONNECT EP TO GROUND. VCC2 CLOCK ENABLE 6 5 4 MAX7394 + FREQUENCY 2 µDFN VCC2 PART MAX7394ATTWV 20MHz 1 2 3 MAX7394ALTWV 20MHz 6 μDFN +AAZ VCC GND I.C. MAX7394ATTYN 32MHz 6 TDFN +ANZ MAX7394ALTYN 32MHz 6 μDFN +ABY MAX7394ATTYQ 33MHz 6 TDFN +AMX MAX7394ALTYQ 33MHz 6 μDFN +ABB MAX7394ATTZH 40MHz 6 TDFN +AOA MAX7394ALTZH 40MHz 6 μDFN +ABZ MAX7394ATTZY 48MHz 6 TDFN +AMZ MAX7394ALTZY 48MHz 6 FDFN +ABD µDFN VCC2 6 CLOCK ENABLE 5 4 *EP MAX7394 + 1 2 3 VCC GND I.C. TDFN *EXPOSED PAD. CONNECT EP TO GROUND. www.maximintegrated.com Maxim Integrated │  7 MAX7393/MAX7394 Chip Information PROCESS: BiCMOS www.maximintegrated.com Precision Silicon Oscillators with Enable or Autoenable 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 OUTLINE NO. LAND PATTERN NO. 6 μDFN L622-1 21-0164 90-0004 6 TDFN T633+2 21-0137 90-0058 Maxim Integrated │  8 MAX7393/MAX7394 Precision Silicon Oscillators with Enable or Autoenable Revision History REVISION NUMBER REVISION DATE PAGES CHANGED 0 5/06 Initial release — 1 4/14 No /V OPNs; removed Automotive reference from Applications section 1 DESCRIPTION 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. Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. © 2014 Maxim Integrated Products, Inc. │  9