HEF4541BT-Q100

Programmable timer

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 1 Hz to 100 kHz. 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.

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.

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.

This product has been qualified to the Automotive Electronics Council (AEC) standard Q100 (Grade 1) and is suitable for use in automotive applications.

Orderable parts

Type number Orderable part number Ordering code (12NC) Package Buy from distributors
HEF4541BT-Q100 HEF4541BT-Q100Y 935302266518 SOT108-1 Order product

Features

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

Target applications

Parametrics

Type numberProduct statusVCC (V)Output drive capability (mA)Logic switching levelstpd (ns)fmax (MHz)Power dissipation considerationsTamb (Cel)Rth(j-a) (K/W)Ψth(j-top) (K/W)Rth(j-c) (K/W)Package name
HEF4541BT-Q100Production4.5 - 15.5- 4/ + 2.7CMOS38150medium-40~85531.010SO14

Package

Type numberPackageOutline versionReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
HEF4541BT-Q100
SO14
(SOT108-1)
SOT108-1SO-SOJ-REFLOW
SO-SOJ-WAVE
Reel 13" Q1/T1 in DrypackActiveHEF4541BTHEF4541BT-Q100Y
( 9353 022 66518 )

Quality, reliability & chemical content

Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateEFRMSLMSL leadfree
HEF4541BT-Q100HEF4541BT-Q100YHEF4541BT-Q100Always Pb-free75.3e1e3
Quality and reliability disclaimer

Documentation (5)

File nameTitleTypeDate
HEF4541B_Q100Programmable timerData sheet2017-05-03
AN11051Pin FMEA HEF4000 familyApplication note2019-01-09
SO-SOJ-REFLOWFootprint for reflow solderingReflow soldering2009-10-08
SO-SOJ-WAVEFootprint for wave solderingWave soldering2009-10-08
SOT108-1plastic, small outline package; 14 leads; 1.27 mm pitch; 8.65 mm x 3.9 mm x 1.75 mm bodyOutline drawing2018-10-18

Support

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Ordering, pricing & availability

Type numberOrderable part numberOrdering code (12NC)PackingBuy online
HEF4541BT-Q100HEF4541BT-Q100Y935302266518Reel 13" Q1/T1 in DrypackOrder product

Sample

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Sample orders normally take 2-4 days for delivery.

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