HEF4541B Programmable timer Rev. 5 -- 15 December 2015 Product data sheet 1. General description 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. 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. 2. Features and benefits Fully static operation 5 V, 10 V, and 15 V parametric ratings Standardized symmetrical output characteristics Operates across the automotive temperature range 40 C to +85 C Complies with JEDEC standard JESD 13-B 3. Ordering information Table 1. Ordering information All types operate from 40 C to +85 C. Type number HEF4541BT Package Name Description Version SO14 plastic small outline package; 14 leads; body width 3.9 mm SOT108-1 HEF4541B Nexperia Programmable timer 4. Functional diagram 56 &7& 57& $ $ 02'( &21752/,13876 $5 05 3+ &3 32:(521 5(6(7 &' 287387 67$*( %,1$5< &2817(5 2 DDL Fig 1. Functional diagram &7& 57& &2817(5 &3 5(6(7 56 &2817(5 &3 5(6(7 $ 08; $ $5 32:(521 5(6(7 /$7&+ 05 02'( 3+ 2 DDL Fig 2. Logic diagram HEF4541B Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 5 -- 15 December 2015 (c) Nexperia B.V. 2017. All rights reserved 2 of 16 HEF4541B Nexperia Programmable timer 5. Pinning information 5.1 Pinning +()% 57& 9'' &7& $ 56 $ QF QF $5 02'( 05 3+ 966 2 DDL Fig 3. Pin configuration 5.2 Pin description Table 2. Pin description Symbol Pin Description RTC 1 external resistor connection CTC 2 external capacitor connection RS 3 external resistor connection (RS) or external clock input nc 4, 11 not connected AR 5 auto reset input (active low) MR 6 master reset input VSS 7 ground (0 V) O 8 timer output PH 9 phase input MODE 10 mode select input A0, A1 12, 13 address inputs VDD 14 supply voltage HEF4541B Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 5 -- 15 December 2015 (c) Nexperia B.V. 2017. All rights reserved 3 of 16 HEF4541B Nexperia Programmable timer 6. Functional description Table 3. Function table[1] Input MODE AR MR PH MODE H L X X auto reset disabled L L X X auto reset enabled[2] X H X X master reset active X L X H normal operation selected division to output X L X L single-cycle mode[3] X L L X output initially LOW after reset X L H X output initially HIGH, after reset [1] H = HIGH voltage level; L = LOW voltage level; X = don't care. [2] For correct power-on reset, the supply voltage should be above 8.5 V. For VDD < 8.5 V, disable the autoreset and connect AR to VDD. [3] The timer is initialized on a reset pulse and the output changes state after 2n-1 counts and remains in that state (latched). Reset of this latch is obtained by master reset or by a LOW to HIGH transition on the MODE input. Table 4. Frequency selection table A0 A1 Number of counter stages n f OSC ---------- = 2 n fO L L 13 8192 L H 10 1024 H L 8 256 H H 16 65536 7. Limiting values Table 5. Limiting values In accordance with the Absolute Maximum Rating System (IEC 60134). Symbol Parameter Conditions VDD supply voltage IIK input clamping current VI input voltage IOK output clamping current VO < 0.5 V or VO > VDD + 0.5 V O output VI < 0.5 V or VI > VDD + 0.5 V Min Max Unit 0.5 +18 V - 10 mA 0.5 VDD + 0.5 - 10 V mA II/O input/output current - 10 mA Tstg storage temperature 65 +150 C Tamb ambient temperature 40 +85 C Ptot total power dissipation - 500 mW - 100 mW Tamb = 40 C to +85 C SO14 package P [1] power dissipation [1] For SO14 package: Ptot derates linearly with 8 mW/K above 70 C. HEF4541B Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 5 -- 15 December 2015 (c) Nexperia B.V. 2017. All rights reserved 4 of 16 HEF4541B Nexperia Programmable timer 8. Recommended operating conditions Table 6. Recommended operating conditions Symbol Parameter VDD VI Conditions Min Max Unit supply voltage 3 15 V input voltage 0 VDD V Tamb ambient temperature in free air 40 +85 C t/V input transition rise and fall rate VDD = 5 V - 3.75 s/V VDD = 10 V - 0.5 s/V VDD = 15 V - 0.08 s/V 9. Static characteristics Table 7. Static characteristics VSS = 0 V; VI = VSS or VDD; unless otherwise specified. Symbol VIH VIL VOH VOL IOH Parameter Conditions HIGH-level input voltage IO < 1 A LOW-level input voltage IO < 1 A HIGH-level output voltage LOW-level output voltage HIGH-level output current IO < 1 A IO < 1 A Tamb = 40 C Tamb = 25 C Tamb = 85 C Min Max Min Max Min Max 5V 3.5 - 3.5 - 3.5 - V 10 V 7.0 - 7.0 - 7.0 - V VDD Unit 15 V 11.0 - 11.0 - 11.0 - V 5V - 1.5 - 1.5 - 1.5 V 10 V - 3.0 - 3.0 - 3.0 V 15 V - 4.0 - 4.0 - 4.0 V 5V 4.95 - 4.95 - 4.95 - V 10 V 9.95 - 9.95 - 9.95 - V 15 V 14.95 - 14.95 - 14.95 - V 5V - 0.05 - 0.05 - 0.05 V 10 V - 0.05 - 0.05 - 0.05 V 15 V - 0.05 - 0.05 - 0.05 V 5V - 1.4 - 1.2 - 0.95 mA CTC, RTC; VO = 2.5 V VO = 4.6 V 5V - 0.5 - 0.4 - 0.3 mA VO = 9.5 V 10 V - 1.4 - 1.2 - 0.95 mA VO = 13.5 V 15 V - 4.8 - 4.0 - 3.2 mA VO = 2.5 V 5V - 1.7 - 1.4 - 1.1 mA VO = 4.6 V 5V - 0.64 - 0.5 - 0.36 mA VO = 9.5 V 10 V - 1.6 - 1.3 - 0.9 mA VO = 13.5 V 15 V - 4.2 - 3.4 - 2.4 mA O; HEF4541B Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 5 -- 15 December 2015 (c) Nexperia B.V. 2017. All rights reserved 5 of 16 HEF4541B Nexperia Programmable timer Table 7. Static characteristics ...continued VSS = 0 V; VI = VSS or VDD; unless otherwise specified. Symbol IOL Parameter Conditions LOW-level output current VDD Tamb = 40 C Tamb = 25 C Tamb = 85 C Min Max Min Min Max Unit Max CTC, RTC; VO = 0.4 V 5V 0.33 - 0.27 - 0.20 - mA VO = 0.5 V 10 V 1.0 - 0.85 - 0.68 - mA VO = 1.5 V 15 V 3.2 - 2.7 - 2.3 - mA VO = 0.4 V 5V 0.64 - 0.5 - 0.36 - mA VO = 0.5 V 10 V 1.6 - 1.3 - 0.9 - mA VO = 1.5 V 15 V 4.2 - 3.2 - 2.4 - mA 15 V - 0.1 - 0.1 - 1.0 A 5V - 5 - 5 - 150 A 10 V - 10 - 10 - 300 A 15 V - 20 - 20 - 600 A - - - - 7.5 - - pF O; II input leakage current IDD supply current CI IO = 0 A input capacitance Table 8. Reset characteristics VSS = 0 V; VI = VSS or VDD; see Table 12 for test conditions; unless otherwise specified. Symbol Parameter IDD supply current supply current for 5V power-on reset 10 V enable; AR = MR = 0 V; Other 15 V inputs at 0 V or VDD VDD Conditions VDD supply voltage supply voltage for automatic reset initialization; AR = MR = 0 V; Other inputs at 0 V or VDD HEF4541B Product data sheet Tamb = 40 C Tamb = +25 C Tamb = +85 C Unit Min Max Min Typ Max Min Max - 80 - 20 80 - 230 A - 750 - 250 600 - 700 A - 1.6 - 0.5 1.3 - 1.5 mA - - 8.5 5 - - - All information provided in this document is subject to legal disclaimers. Rev. 5 -- 15 December 2015 (c) V Nexperia B.V. 2017. All rights reserved 6 of 16 HEF4541B Nexperia Programmable timer 10. Dynamic characteristics Table 9. Dynamic characteristics VSS = 0 V; Tamb = 25 C unless otherwise specified. For test circuit, see Figure 5. Symbol Parameter propagation delay tpd Conditions RS to O; 28 selected; see Figure 4 pulse width fclk(max) fosc Min Typ[1] Max 348 ns + (0.55 ns/pF)CL - 375 750 10 V 139 ns + (0.23 ns/pF)CL - 150 300 ns 15 V 102 ns + (0.16 ns/pF)CL - 110 220 ns 5V 398 ns + (0.55 ns/pF)CL - 425 850 ns 10 V 154 ns + (0.23 ns/pF)CL - 165 330 ns 15 V 5V RS to O; 210 selected; see Figure 4 tW Extrapolation formula VDD [2] Unit ns 112 ns + (0.16 ns/pF)CL - 120 240 ns RS to O; 213 selected; see Figure 4 5V 483 ns + (0.55 ns/pF)CL - 510 1020 ns 10 V 179 ns + (0.23 ns/pF)CL - 190 380 ns 15 V 127 ns + (0.16 ns/pF)CL - 135 270 ns RS to O; 216 selected; see Figure 4 5V 548 ns + (0.55 ns/pF)CL - 575 1150 ns 10 V 199 ns + (0.23 ns/pF)CL - 210 420 ns 142 ns + (0.16 ns/pF)CL - 150 300 ns 60 30 - ns 10 V 15 V [3] RS LOW; MR HIGH; see Figure 4 5V 30 15 - ns 15 V 24 12 - ns maximum clock frequency RS; see Figure 4 5V 8 16 - MHz 10 V 15 30 - MHz 15 V 18 36 - MHz oscillator frequency Rt = 5 k; Ct = 1 nF; RS = 10 k; see Figure 6 5V - 90 - kHz 10 V - 90 - kHz 15 V - 90 - kHz Rt = 56 k; Ct = 1 nF; RS = 120 k; see Figure 6 5V - 8 - kHz 10 V - 8 - kHz 15 V - 8 - kHz [1] The typical values of the propagation delay and transition times are calculated from the extrapolation formulas shown (CL in pF). [2] tpd is the same as tPHL and tPLH. [3] tW is the same as tWL(min) and tWH(min). HEF4541B Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 5 -- 15 December 2015 (c) Nexperia B.V. 2017. All rights reserved 7 of 16 HEF4541B Nexperia Programmable timer Table 10. Dynamic power dissipation PD can be calculated from the formulas shown. VSS = 0 V; tr = tf 20 ns; Tamb = 25 C. Symbol Parameter VDD Typical formula dynamic power dissipation 5V PD = 1300 fi + (fo CL VDD2) W 10 V PD = 5300 fi + (fo CL VDD2) W 15 V PD = 12000 fi + (fo CL VDD2) W 5V PD = 1300 fosc + foCLVDD2 + 2CTCVDD2 fosc + 10VDD W 10 V PD = 5300 fosc + foCLVDD2 + 2CTCVDD2 fosc + 100VDD W 15 V PD = 12000 fosc + foCLVDD2 + 2CTCVDD2 fosc + 400VDD W Per package PD Using the on-chip oscillator Total dynamic power dissipation PD(Tot) [1] fi = input frequency in MHz; fo = output frequency in MHz; CL = output load capacitance in pF; VDD = supply voltage in V; fosc = oscillator frequency in MHz; CTC = timing capacitance in pF. 11. Waveforms IFON PD[ 9, 90 56LQSXW 966 92+ W:+ PLQ W3/+ 2RXWSXW W:/ PLQ W3+/ 90 92/ 9, 05LQSXW 966 W:+ PLQ DDD VOL and VOH are typical output voltage levels that occur with the output load. Measurement are points given in Table 11, the test circuit in Figure 5 and the test data in Table 12 (1) 2n pulses as selected by address inputs (A0, A1). Fig 4. Propagation delay clock (RS) to output (O), clock pulse width and maximum clock frequency Table 11. Measurement points Supply voltage Input Output VDD VM VM 5 V to 15 V 0.5VDD 0.5VDD HEF4541B Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 5 -- 15 December 2015 (c) Nexperia B.V. 2017. All rights reserved 8 of 16 HEF4541B Nexperia Programmable timer 9'' * 9, 92 '87 &/ 57 DDJ Test data is given in Table 12. Definitions for test circuit: DUT - Device Under Test. RL = Load resistance. CL = load capacitance. RT = Termination resistance should be equal to output impedance of Zo of the pulse generator. Fig 5. Test circuit for measuring switching times Table 12. Test data Supply Input VDD VI tr, tf CL 5 V to 15 V VSS or VDD 20 ns 50 pF HEF4541B Product data sheet Load All information provided in this document is subject to legal disclaimers. Rev. 5 -- 15 December 2015 (c) Nexperia B.V. 2017. All rights reserved 9 of 16 HEF4541B Nexperia Programmable timer 12. Application information RC oscillator timing component limitations The oscillator frequency is mainly determined by RTCCTC, provided RTC << RS and RSC2 << RTCCTC. The function of RS is to minimize the influence of the forward voltage across the input protection diodes on the frequency. The stray capacitance C2 should be kept as small as possible. In consideration of accuracy, CTC must be larger than the inherent stray capacitance. RTC must be larger than the LOCMOS `ON' resistance in series with it, which typically is 500 at VDD = 5 V, 300 at VDD = 10 V and 200 at VDD = 15 V. The recommended values for these components to maintain agreement with the typical oscillation formula are: CTC 100 pF, up to any typical value, 10 k RTC 1 M. UHVHW IURPORJLF FORFNWR FRXQWHU 56 & &7& 57& 57& &7& 56 DDL 1 Typical formula for oscillator frequency: f osc = ---------------------------------------- . 2.3 R TC C TC External component connection for RC oscillator; RS RTC Fig 6. DDL IRVF +] IRVF +] &7& ) a. CTC curve at RTC = 56 k; RS = 120 k. Fig 7. DDL 57& b. RTC curve at CTC = 1 nF; RS = 2 RTC. RC oscillator frequency as a function of RTC and CTC at VDD = 5 to 15 V; Tamb = 25 C HEF4541B Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 5 -- 15 December 2015 (c) Nexperia B.V. 2017. All rights reserved 10 of 16 HEF4541B Nexperia Programmable timer DDL I DDL I 9'' 9 9'' 9 9 9 9 9 7DPE & a. Fig 8. RTC = 56 k; CTC = 1 nF; RS = 0 . 7DPE & b. RTC = 56 k; CTC = 1 nF; RS = 120 k. Frequency deviation (f) as a function of ambient temperature HEF4541B Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 5 -- 15 December 2015 (c) Nexperia B.V. 2017. All rights reserved 11 of 16 HEF4541B Nexperia Programmable timer 13. Package outline 62SODVWLFVPDOORXWOLQHSDFNDJHOHDGVERG\ZLGWKPP 627 ' ( $ ; F \ +( Y 0 $ = 4 $ $ $ $ SLQLQGH[ /S / H GHWDLO; Z 0 ES PP VFDOH ',0(16,216 LQFKGLPHQVLRQVDUHGHULYHGIURPWKHRULJLQDOPPGLPHQVLRQV 81,7 $ PD[ $ $ $ ES F ' ( H +( / /S 4 Y Z \ = PP LQFKHV R R 1RWH 3ODVWLFRUPHWDOSURWUXVLRQVRIPP LQFK PD[LPXPSHUVLGHDUHQRWLQFOXGHG Fig 9. 5()(5(1&(6 287/,1( 9(56,21 ,(& -('(& 627 ( 06 -(,7$ (8523($1 352-(&7,21 ,668('$7( Package outline SOT108-1 (SO14) HEF4541B Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 5 -- 15 December 2015 (c) Nexperia B.V. 2017. All rights reserved 12 of 16 HEF4541B Nexperia Programmable timer 14. Abbreviations Table 13. Abbreviations Acronym Description CMOS Complementary Metal Oxide Semiconductor DUT Device Under Test ESD ElectroStatic Discharge HBM Human Body Model MM Machine Model TTL Transistor-Transistor Logic 15. Revision history Table 14. Revision history Document ID Release date Data sheet status Change notice Supersedes HEF4541B v.5 20151215 Product data sheet - HEF4541B v.4 Modifications: HEF4541B v.4 Modifications: * Type number HEF4541BP (SOT27-1) removed. 20120625 Product data sheet - HEF4541B_CNV v.3 * The format of this data sheet has been redesigned to comply with the new identity guidelines of NXP Semiconductors. * * Legal texts have been adapted to the new company name where appropriate. Section 2 "Features and benefits" added. HEF4541B_CNV v.3 19950101 Product specification - HEF4541B_CNV v.2 HEF4541B_CNV v.2 19950101 Product specification - - HEF4541B Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 5 -- 15 December 2015 (c) Nexperia B.V. 2017. All rights reserved 13 of 16 HEF4541B Nexperia Programmable timer 16. Legal information 16.1 Data sheet status Document status[1][2] Product status[3] Definition Objective [short] data sheet Development This document contains data from the objective specification for product development. Preliminary [short] data sheet Qualification This document contains data from the preliminary specification. Product [short] data sheet Production This document contains the product specification. [1] Please consult the most recently issued document before initiating or completing a design. [2] The term `short data sheet' is explained in section "Definitions". [3] The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest product status information is available on the Internet at URL http://www.nexperia.com. 16.2 Definitions Draft -- The document is a draft version only. The content is still under internal review and subject to formal approval, which may result in modifications or additions. Nexperia does not give any representations or warranties as to the accuracy or completeness of information included herein and shall have no liability for the consequences of use of such information. Short data sheet -- A short data sheet is an extract from a full data sheet with the same product type number(s) and title. A short data sheet is intended for quick reference only and should not be relied upon to contain detailed and full information. For detailed and full information see the relevant full data sheet, which is available on request via the local Nexperia sales office. In case of any inconsistency or conflict with the short data sheet, the full data sheet shall prevail. Product specification -- The information and data provided in a Product data sheet shall define the specification of the product as agreed between Nexperia and its customer, unless Nexperia and customer have explicitly agreed otherwise in writing. In no event however, shall an agreement be valid in which the Nexperia product is deemed to offer functions and qualities beyond those described in the Product data sheet. 16.3 Disclaimers Limited warranty and liability -- Information in this document is believed to be accurate and reliable. However, Nexperia does not give any representations or warranties, expressed or implied, as to the accuracy or completeness of such information and shall have no liability for the consequences of use of such information. Nexperia takes no responsibility for the content in this document if provided by an information source outside of Nexperia. In no event shall Nexperia be liable for any indirect, incidental, punitive, special or consequential damages (including - without limitation - lost profits, lost savings, business interruption, costs related to the removal or replacement of any products or rework charges) whether or not such damages are based on tort (including negligence), warranty, breach of contract or any other legal theory. Notwithstanding any damages that customer might incur for any reason whatsoever, Nexperia's aggregate and cumulative liability towards customer for the products described herein shall be limited in accordance with the Terms and conditions of commercial sale of Nexperia. Right to make changes -- Nexperia reserves the right to make changes to information published in this document, including without limitation specifications and product descriptions, at any time and without notice. This document supersedes and replaces all information supplied prior to the publication hereof. HEF4541B Product data sheet Suitability for use -- Nexperia products are not designed, authorized or warranted to be suitable for use in life support, life-critical or safety-critical systems or equipment, nor in applications where failure or malfunction of a Nexperia product can reasonably be expected to result in personal injury, death or severe property or environmental damage. Nexperia and its suppliers accept no liability for inclusion and/or use of Nexperia products in such equipment or applications and therefore such inclusion and/or use is at the customer's own risk. Applications -- Applications that are described herein for any of these products are for illustrative purposes only. Nexperia makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification. Customers are responsible for the design and operation of their applications and products using Nexperia products, and Nexperia accepts no liability for any assistance with applications or customer product design. It is customer's sole responsibility to determine whether the Nexperia product is suitable and fit for the customer's applications and products planned, as well as for the planned application and use of customer's third party customer(s). Customers should provide appropriate design and operating safeguards to minimize the risks associated with their applications and products. Nexperia does not accept any liability related to any default, damage, costs or problem which is based on any weakness or default in the customer's applications or products, or the application or use by customer's third party customer(s). Customer is responsible for doing all necessary testing for the customer's applications and products using Nexperia products in order to avoid a default of the applications and the products or of the application or use by customer's third party customer(s). Nexperia does not accept any liability in this respect. Limiting values -- Stress above one or more limiting values (as defined in the Absolute Maximum Ratings System of IEC 60134) will cause permanent damage to the device. Limiting values are stress ratings only and (proper) operation of the device at these or any other conditions above those given in the Recommended operating conditions section (if present) or the Characteristics sections of this document is not warranted. Constant or repeated exposure to limiting values will permanently and irreversibly affect the quality and reliability of the device. Terms and conditions of commercial sale -- Nexperia products are sold subject to the general terms and conditions of commercial sale, as published at http://www.nexperia.com/profile/terms, unless otherwise agreed in a valid written individual agreement. In case an individual agreement is concluded only the terms and conditions of the respective agreement shall apply. Nexperia hereby expressly objects to applying the customer's general terms and conditions with regard to the purchase of Nexperia products by customer. No offer to sell or license -- Nothing in this document may be interpreted or construed as an offer to sell products that is open for acceptance or the grant, conveyance or implication of any license under any copyrights, patents or other industrial or intellectual property rights. All information provided in this document is subject to legal disclaimers. Rev. 5 -- 15 December 2015 (c) Nexperia B.V. 2017. All rights reserved 14 of 16 HEF4541B Nexperia Programmable timer Export control -- This document as well as the item(s) described herein may be subject to export control regulations. Export might require a prior authorization from competent authorities. Non-automotive qualified products -- Unless this data sheet expressly states that this specific Nexperia product is automotive qualified, the product is not suitable for automotive use. It is neither qualified nor tested in accordance with automotive testing or application requirements. Nexperia accepts no liability for inclusion and/or use of non-automotive qualified products in automotive equipment or applications. In the event that customer uses the product for design-in and use in automotive applications to automotive specifications and standards, customer (a) shall use the product without Nexperia's warranty of the product for such automotive applications, use and specifications, and (b) whenever customer uses the product for automotive applications beyond Nexperia's specifications such use shall be solely at customer's own risk, and (c) customer fully indemnifies Nexperia for any liability, damages or failed product claims resulting from customer design and use of the product for automotive applications beyond Nexperia's standard warranty and Nexperia's product specifications. Translations -- A non-English (translated) version of a document is for reference only. The English version shall prevail in case of any discrepancy between the translated and English versions. 16.4 Trademarks Notice: All referenced brands, product names, service names and trademarks are the property of their respective owners. 17. Contact information For more information, please visit: http://www.nexperia.com For sales office addresses, please send an email to: salesaddresses@nexperia.com HEF4541B Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 5 -- 15 December 2015 (c) Nexperia B.V. 2017. All rights reserved 15 of 16 Nexperia HEF4541B Programmable timer 18. Contents 1 2 3 4 5 5.1 5.2 6 7 8 9 10 11 12 13 14 15 16 16.1 16.2 16.3 16.4 17 18 (c) General description . . . . . . . . . . . . . . . . . . . . . . 1 Features and benefits . . . . . . . . . . . . . . . . . . . . 1 Ordering information . . . . . . . . . . . . . . . . . . . . . 1 Functional diagram . . . . . . . . . . . . . . . . . . . . . . 2 Pinning information . . . . . . . . . . . . . . . . . . . . . . 3 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 3 Functional description . . . . . . . . . . . . . . . . . . . 4 Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 4 Recommended operating conditions. . . . . . . . 5 Static characteristics. . . . . . . . . . . . . . . . . . . . . 5 Dynamic characteristics . . . . . . . . . . . . . . . . . . 7 Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Application information. . . . . . . . . . . . . . . . . . 10 RC oscillator timing component limitations . . . .10 Package outline . . . . . . . . . . . . . . . . . . . . . . . . 12 Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Revision history . . . . . . . . . . . . . . . . . . . . . . . . 13 Legal information. . . . . . . . . . . . . . . . . . . . . . . 14 Data sheet status . . . . . . . . . . . . . . . . . . . . . . 14 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Contact information. . . . . . . . . . . . . . . . . . . . . 15 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Nexperia B.V. 2017. All rights reserved For more information, please visit: http://www.nexperia.com For sales office addresses, please send an email to: salesaddresses@nexperia.com Date of release: 15 December 2015