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TSM921CUA+ Datasheet(PDF) 1 Page - Touchstone Semiconductor Inc |
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TSM921CUA+ Datasheet(HTML) 1 Page - Touchstone Semiconductor Inc |
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1 / 19 page  TSM921-TSM924 Page 1 © 2012 Touchstone Semiconductor, Inc. All rights reserved. FEATURES ♦ Ultra-Low Quiescent Current Over Temperature TSM921 /TSM922: 4μA (total) TSM923/TSM924: <2.5μA per comparator ♦ Single or Dual Power Supplies: Single: +2.5V to +11V Dual: ±1.25V to ±5.5V ♦ Input Voltage Range Includes Negative Supply ♦ 12μs Propagation Delay at 10mV Overdrive ♦ Push-pull TTL/CMOS-Compatible Outputs ♦ Crowbar-Current-Free Switching ♦ Continuous Source Current Capability: 40mA ♦ Internal 1.182V ±1% Reference: TSM921/TSM923/TSM924 ♦ Adjustable Hysteresis: TSM921/TSM923 APPLICATIONS Threshold Detectors Window Comparator Level Translators Oscillator Circuits Battery-Powered Systems DESCRIPTION The TSM921 –TSM924 family of single/dual/quad, low-voltage, micropower analog comparators is electrically and form-factor identical to the MAX921- MAX924 family of analog comparators. Ideal for 3V or 5V single-supply applications, the TSM921 –TSM924 family can operate from single +2.5V to +11V supplies or from ±1.25V to ±5.5V dual supplies. The single TSM921 and the dual TSM922 draw less than 4μA (max) supply current over temperature. The dual TSM923 and the quad TSM924 draw less than 2.5 μA per comparator over temperature. All comparators in this family exhibit an input voltage range from the negative supply rail to within 1.3V of the positive supply. In addition, the comparators’ push-pull output stages are TTL/CMOS compatible and capable of sinking and sourcing current. The TSM921/TSM923/TSM924 each incorporates an internal 1.182V ±1% voltage reference. Without complicated feedback configurations and only requiring two additional resistors, adding external hysteresis via a separate pin is available on the single TSM921 and the dual TSM923. Ultra-Low-Power, Single/Dual-Supply Comparators TYPICAL APPLICATION CIRCUIT A 5V, Low-Parts-Count Window Detector PART INTERNAL REFERENCE COMPARATORS PER PACKAGE INTERNAL HYSTERESIS TSM921 Yes 1 Yes TSM922 No 2 No TSM923 Yes 2 Yes TSM924 Yes 4 No PART TEMPERATURE RANGE PACKAGE TSM921C 0ºC to 70ºC 8-Pin MSOP/SOIC TSM921E -40ºC to 85ºC TSM922C 0ºC to 70ºC 8-Pin MSOP/SOIC TSM922E -40ºC to 85ºC TSM923C 0ºC to 70ºC 8-Pin MSOP/SOIC TSM923E -40ºC to 85ºC TSM924C 0ºC to 70ºC 16-Pin SOIC TSM924E -40ºC to 85ºC The Touchstone Semiconductor logo is a registered trademark of Touchstone Semiconductor, Incorporated. |
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