STM6904 Quad, ultralow voltage supervisor with push-button reset

The STM6904 supervisor is a low voltage/low supply current processor supervisor, designed to monitor up to four system power supply voltages. This device is targeted at applications such as “Set-Top Boxes” (STBs), portable, battery-powered systems, networking and communication systems.

The device supports a push-button type manual reset input (MR). Two of the four supply monitors (VCCand V2IN) have fixed (customer-selectable, factory-trimmed) thresholds (VRST1and VRST2). The other two voltage monitor inputs (V3IN and V4IN) are monitored using externally adjustable threshold (0.600 V internal reference) to meet specific level requirements.

If any of the four monitored voltages drops below its factory-trimmed or adjustable thresholds, or if the MRis asserted to logic low, the reset output RSTis asserted (driven low). Once asserted, RST is maintained low for a minimum delay period (tREC) after ALL monitored supplies rise above their respective thresholds and MR returns to high. This device is in the correct reset output logic state when VCCgreater than 0.8 V.

The STM6904 is available in a standard 8-lead MSOP (TSSOP) package

技术特性

Quad voltage monitoring
Accurate ±1.8% across temperature voltage threshold (±1% at 25 °C)
Primary supply (VCC) monitor. Fixed (factory -programmed) reset thresholds: 3.078 to 2.188 V
Second fixed (V2IN) monitor. Fixed (factory-programmed) reset thresholds: 2.333 to 1.110 V
Two additional adjustable supply monitor inputs (externally adjustable)
0.6 V internal reference
RSToutput (open drain)
Output guaranteed for VCC ≥ 0.8 V
Reset delay time (tREC) pin selectable
Manual reset input (MR)
Low supply current of 12 μA (typ)
Power supply voltage 0.8 to 5.5 V
RoHS compliant (green package)
8-pin MSOP/TSSOP
Operating temperature: –40 to 85 °C (industrial grade)

功能框图

STM6904 订购信息

订购型号	产品状态	美金价格	数量	封装	包装形式	温度范围	材料声明
STM6904TGEDS6F	Active	0.5285	1000	MSOP/TSSOP 8	Tape And Reel		STM6904TGEDS6F
STM6904TZEDS6F	Active	0.5285	1000	MSOP/TSSOP 8	Tape And Reel		STM6904TZEDS6F
STM6904SYEDS6F	Active	0.5285	1000	MSOP/TSSOP 8	Tape And Reel		STM6904SYEDS6F
STM6904SFEDS6F	Active	0.5285	1000	MSOP/TSSOP 8	Tape And Reel		STM6904SFEDS6F
STM6904PWEDS6F	Active	0.5285	1000	MSOP/TSSOP 8	Tape And Reel		STM6904PWEDS6F
STM6904TWEDS6F	Active	0.5285	1000	MSOP/TSSOP 8	Tape And Reel		STM6904TWEDS6F

DATASHEET

描述	版本	大小
STM6904 : DS5648: Quad, ultralow voltage supervisor with push-button reset	3	169KB

FLYERS

描述	版本	大小
FLSTM69040909: STM6904 and STM6905	1.0	319KB