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HEF4541BT

Programmable timer

DESCRIPTION TheHEF4541Bisaprogrammabletimerwhichconsistsofa16-stagebinarycounter,anintegratedoscillatortobeusedwithexternaltimingcomponents,anautomaticpower-onresetandoutputcontrollogic.ThefrequencyoftheoscillatorisdeterminedbytheexternalcomponentsRtand

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HEF4541BT

Programmable timer

1.Generaldescription TheHEF4541Bisaprogrammabletimer.Itconsistsofa16-stagebinarycounter,anintegrated oscillatortobeusedwithexternaltimingcomponents,anautomaticpower-onresetandoutput controllogic.TheexternalcomponentsRTCandCTCdeterminesthefrequencyoftheo

HEF4541BT

Programmable timer; ? Fully static operation\n? 5 V, 10 V, and 15 V parametric ratings\n? Standardized symmetrical output characteristics\n? Operates across the automotive temperature range ?40 °C to +85 °C\n? Complies with JEDEC standard JESD 13-B\n;

The HEF4541B is a programmable timer which consists of a 16-stage binary counter, an integrated oscillator to be used with external timing components, an automatic power-on reset and output control logic. The frequency of the oscillator is determined by the external components RTC and CTC within the frequency range 1 Hz to 100 kHz. This oscillator may be replaced by an external clock signal at input RS, the timer advances on the positive-going transition of RS. A LOW on the auto reset input (AR) and a LOW on the master reset input (MR) enables the internal power-on reset. A HIGH level at input MR resets the counter independent on all other inputs. Resetting disables the oscillator to provide no active power dissipation.\n A HIGH at input AR turns off the power-on reset to provide a low quiescent power dissipation of the timer. The 16-stage counter divides the oscillator frequency by 28, 210, 213 or 216 depending on the state of the address inputs (A0, A1). The divided oscillator frequency is available at output O. The phase input (PH) features a complementary output signal. When the mode select input (MODE) is LOW the timer is a single transition timer and when HIGH the timer is a 2n frequency divider.\n It operates over a recommended VDD power supply range of 3 V to 15 V referenced to VSS (usually ground). Unused inputs must be connected to VDD, VSS, or another input.\n

HEF4541BT-Q100

Programmable timer; ? Automotive product qualification in accordance with AEC-Q100 (Grade 1)? Specified from -40 °C to +85 °C and from -40 °C to +125 °C\n\n? Fully static operation\n? 5 V, 10V, and 15V parametric ratings\n? Standardized symmetrical output characteristics\n? ESD protection:? MIL-STD-883, method 3015 exceeds 2000V\n? HBM JESD22-A114F exceeds 2000V\n? MM JESD22-A115-A exceeds 200 V (C = 200pF, R = 0Ω)\n\n? Complies with JEDEC standard JESD 13-B\n;

The HEF4541B-Q100 is a programmable timer. It consists of a 16?stage binary counter, an integrated oscillator to be used with external timing components, an automatic power-on reset and output control logic. The external components RTC and CTC determines the frequency of the oscillator within the frequency range 1Hz to 100kHz. An external clock signal at input RS can replace the oscillator. The timer advances on the positive?going transition of RS. A LOW on the auto reset input (AR) and a LOW on the master reset input (MR) enables the internal power?on reset. A HIGH level at input MR resets the counter independent on all other inputs. Resetting, disables the oscillator to provide no active power dissipation.\n A HIGH at input AR turns off the power-on reset to provide a low quiescent power dissipation of the timer. The 16?stage counter divides the oscillator frequency by 28, 210, 213 or 216 depending on the state of the address inputs (A0, A1). The divided oscillator frequency is available at output O. The phase input (PH) features a complementary output signal. When the mode select input (MODE) is LOW the timer is a single transition timer and when HIGH the timer is a 2n frequency divider.\n It operates over a recommended VDD power supply range of 3V to 15V referenced to VSS (usually ground). Unused inputs must be connected to VDD, VSS, or another input.\n This product has been qualified to the Automotive Electronics Council (AEC) standard Q100 (Grade 1) and is suitable for use in automotive applications.\n

HEF4541BT,518

Package：14-SOIC（0.154"，3.90mm 寬）；包裝：托盤 類別：集成電路（IC） 可編程定時器和振蕩器 描述：IC OSC PROG TIMER 36MHZ 14SOIC

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HEF4541BT,652

Package：14-SOIC（0.154"，3.90mm 寬）；包裝：管件 類別：集成電路（IC） 可編程定時器和振蕩器 描述：IC OSC PROG TIMER 36MHZ 14SOIC

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HEF4541BT,653

Package：14-SOIC（0.154"，3.90mm 寬）；包裝：管件 類別：集成電路（IC） 可編程定時器和振蕩器 描述：IC OSC PROG TIMER 36MHZ 14SOIC

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