SN74HC42N

XBLW SN74HC/HCT42 BCD to Decimal Decoder（1-of-10） General Description The SN74HC/HCT42 is a one often BCD to decimal decoder. It accepts four BCD inputs (0A to 3A) and — — provides ten mutually exclusive outputs (0Y to 9Y). The logic design ensures that all outputs are HIGH when binary codes greater than nine are applied to the inputs. The most significant input (3A) produces an useful inhibit function when the device is used as a 1-of-8 decoder. The 3A input can also be used as the data input in an 8 -output demultiplexer application. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC. Features  Input levels: For SN74HC42: CMOS level For SN74HCT42: TTL level  Mutually exclusive outputs  1-of-8 demultiplexing capability  Outputs disabled for input codes above nine  Specified from -40℃ to +125℃  Packaging information: DIP16/SOP16/TSSOP16 Ordering Information Product Model XBLW SN74HC42N XBLW SN74HC42DTR XBLW SN74HC42TDTR XBLW SN74HCT42N XBLW SN74HCT42DTR XBLW SN74HCT42TDTR Package Type DIP-16 SOP-16 TSSOP-16 DIP-16 SOP-16 TSSOP-16 Marking 74HC42N 74HC42 74HC42 74HCT42N 74HCT42 74HCT42 Packing Tube Tape Tape Tube Tape Tape Packing Qty 1000Pcs/Box 2500Pcs/Reel 3000Pcs/Reel 1000Pcs/Box 2500Pcs/Reel 3000Pcs/Reel Block Diagram And Pin Description 2.1 Block Diagram Figure 1. Logic symbol XBLWversion1.0 www.xinboleic.com Technical Support:4009682003 1 / 13 XBLW SN74HC/HCT42 BCD to Decimal Decoder（1-of-10） Figure 2. IEC logic symbol Figure 4. Logic diagram Pin Configurations Pin Description Pin No. Pin Name Description 1 0Y multiplexer output 2 1Y multiplexer output 3 — 2Y multiplexer output 4 3Y multiplexer output 5 — 4Y multiplexer output 6 5Y multiplexer output 7 multiplexer output 8 6Y GND 9 7Y multiplexer output 10 8Y multiplexer output 11 9Y multiplexer output XBLWversion1.0 ground (0V) www.xinboleic.com Technical Support:4009682003 2 / 13 XBLW SN74HC/HCT42 BCD to Decimal Decoder（1-of-10） 12 3A data input 13 2A data input 14 1A data input 15 0A data input 16 VCC supply voltage Function Table Input Output 3A 2A 1A L L L L L L L L L L L 0A L 0Y L 1Y H 2Y H 3Y H 4Y H 5Y H 6Y H 7Y H 8Y H 9Y H H H L H H H H H H H H H L H H L H H H H H H H L H H H H H L H H H H H H H L L H H H H L H H H H H H L H H H H H H L H H H H L H H L H H H H H H L H H H L H H H H H H H H H H L H H H L L L H H H H H H H H L H H L L H H H H H H H H H H L H L H L H H H H H H H H H H H L H H H H H H H H H H H H H H L L H H H H H H H H H H H H L H H H H H H H H H H H H H H L H H H H H H H H H H H H H H H H H H H H H H H H Note: H=HIGH voltage level; L=LOW voltage level. Electrical Parameter Absolute Maximum Ratings (Voltages are referenced to GND (ground=0V), unless otherwise specified.) Parameter Symbol Conditions supply voltage Min. -0.5 Max. +7.0 Unit VCC - input clamping current IIK VI < -0.5V or VI > VCC+0.5V - ±20 mA output clamping current IOK VO < -0.5V or VO > VCC+0.5V - ±20 mA output current IO -0.5V < VO < VCC+0.5V ±25 mA supply current - ICC mA IGND - -50 +50 ground current - +150 mA 500 mW storage temperature Tstg - -65 total power dissipation Ptot - - soldering temperature TL XBLWversion1.0 10s www.xinboleic.com DIP SOP/TSSOP 245 260 Technical Support:4009682003 V ℃ ℃ 3 / 13 XBLW SN74HC/HCT42 BCD to Decimal Decoder（1-of-10） Recommended Operating Conditions Parameter Symbol supply voltage VCC input voltage VI output voltage VO Conditions Min. Typ. Max. Unit 2.0 5.0 6.0 V 0 - VCC V VCC 625 ns/V 139 ns/V SN74HC42 VCC=2.0V 0 VCC=4.5V - VCC=6.0V -40 - 83 ns/V - +125 ℃ 4.5 5.0 5.5 V - VCC V - VCC V - - 1.67 V input transition rise and fall rate Δt/ΔV ambient temperature Tamb supply voltage VCC input voltage VI output voltage - VO 0 input transition rise and fall rate - Δt/ΔV VCC=4.5V - 1.67 139 ns/V ambient temperature Tamb - -40 - +125 ℃ SN74HCT42 - 0 Electrical Characteristics 3.3.1 DC Characteristics 1 (Tamb=25℃, voltages are referenced to GND (ground=0V), unless otherwise specified.) Parameter Conditions Symbol Min. Typ. Max. Unit - V SN74HC42 HIGH-level input voltage VIH LOW-level input voltage VIL HIGH-level output voltage LOW-level output voltage VOH VI=VIH or VIL VCC=2.0V 1.5 1.2 VCC=4.5V 3.15 2.4 VCC=6.0V 4.2 3.2 VCC=2.0V - VI=VIH or VIL supply current input capacitance V 0.8 0.5 V 1.35 V - 2.1 VCC=6.0V 2.8 1.8 V IO=-20uA; VCC=2.0V 1.9 2.0 4.4 4.5 - V IO=-20uA; VCC=4.5V IO=-20uA; VCC=6.0V 5.9 6.0 IO=-4.0mA; VCC=4.5V 3.98 4.32 IO=-5.2mA; VCC=6.0V 5.48 5.81 IO=20uA; VCC=2.0V - IO=20uA; VCC=6.0V IO=4.0mA; VCC=4.5V IO=5.2mA; VCC=6.0V input leakage current V VCC=4.5V IO=20uA; VCC=4.5V VOL - - V V - V V 0 0.1 V 0 0.1 V 0 0.1 V 0.15 0.26 V - 0.16 0.26 V - II VI=VCC or GND; VCC=6.0V - - ±1.0 uA ICC VI=VCC or GND; IO=0A; VCC=6.0V - - 8.0 uA - 3.5 - pF CI SN74HCT42 XBLWversion1.0 www.xinboleic.com Technical Support:4009682003 4 / 13 XBLW SN74HC/HCT42 BCD to Decimal Decoder（1-of-10） HIGH-level input voltage VIH VCC=4.5V to 5.5V 2.0 1.6 - V LOW-level input voltage VIL VCC=4.5V to 5.5V - 1.2 0.8 V HIGH-level output voltage VOH IO=-20uA 4.4 4.5 V IO=-4.0mA 3.98 4.32 - IO=20uA - 0.1 V 0 V IO=4.0mA - 0.16 0.26 V VI=VIH or VIL; VCC=4.5V LOW-level output voltage VOL input leakage current II VI=VCC or GND; VCC=5.5V - - ±1.0 uA supply current ICC - - 8.0 uA additional supply current ΔICC VI=VCC or GND; IO=0A; VCC=5.5V VI=VCC-2.1V; other inputs at VCC or GND; IO=0A; VCC=4.5V to 5.5V - - 360 uA input capacitance CI - - 3.5 - pF VI=VIH or VIL; VCC=4.5V DC Characteristics 2 (Tamb=-40℃ to +85℃, voltages are referenced to GND (ground=0V), unless otherwise specified.) Parameter Symbol Conditions Min. Typ. Max. Unit VCC=2.0V 1.5 3.15 - V VCC=4.5V - VCC=6.0V - - V 4.2 - - 0.5 V VCC=2.0V - V - - 1.35 V - V IO=-20uA; VCC=2.0V 1.9 1.8 4.4 - V IO=-20uA; VCC=4.5V - IO=-20uA; VCC=6.0V 5.9 - - IO=-4.0mA; VCC=4.5V 3.84 - - 5.34 - V IO=-5.2mA; VCC=6.0V - V IO=20uA; VCC=2.0V - - 0.1 V - - 0.1 V - - - - - SN74HC42 HIGH-level input voltage LOW-level input voltage HIGH-level output voltage LOW-level output voltage VIH VIL VCC=4.5V VCC=6.0V VOH VI=VIH or VIL IO=20uA; VCC=4.5V VOL VI=VIH or VIL IO=20uA; VCC=6.0V IO=4.0mA; VCC=4.5V IO=5.2mA; VCC=6.0V V V 0.1 V 0.33 V - 0.33 V input leakage current II VI=VCC or GND; VCC=6.0V - - ±1.0 uA supply current ICC VI=VCC or GND; IO=0A; VCC=6.0V - - 80 uA SN74HCT42 HIGH-level input voltage VIH VCC=4.5V to 5.5V 2.0 - - V LOW-level input voltage VIL VCC=4.5V to 5.5V - - 0.8 V HIGH-level output voltage VOH IO=-20uA 4.4 - V 3.84 - IO=-4.0mA - - XBLWversion1.0 VI=VIH or VIL; VCC=4.5V www.xinboleic.com Technical Support:4009682003 V 5 / 13 XBLW SN74HC/HCT42 BCD to Decimal Decoder（1-of-10） LOW-level output voltage VOL input leakage current II supply current ICC additional supply current ΔICC IO=20uA VI=VIH or VIL; VCC=4.5V 0.1 V - 0.33 V - - ±1.0 uA - - 80 uA - - 450 uA - - - VI=VCC or GND; VCC=5.5V VI=VCC or GND; IO=0A; VCC=5.5V VI=VCC-2.1V; other inputs at VCC or GND; IO=0A; VCC=4.5V to 5.5V IO=4.0mA DC Characteristics 3 (Tamb=-40℃ to +125℃, voltages are referenced to GND (ground=0V), unless otherwise specified.) Parameter Conditions Symbol Min. Typ. Max. Unit VCC=2.0V 1.5 3.15 - V VCC=4.5V - 4.2 - V VCC=6.0V - - - 0.5 V VCC=2.0V V - - 1.35 V 1.9 - 1.8 V IO=-20uA; VCC=2.0V 4.4 - V IO=-20uA; VCC=4.5V - - - - - - V - 0.1 V V 0.1 V 0.1 V 0.4 V V SN74HC42 HIGH-level input voltage LOW-level input voltage HIGH-level output voltage LOW-level output voltage VIH VIL VCC=4.5V VCC=6.0V VOH VI=VIH or VIL IO=-20uA; VCC=6.0V 5.9 IO=-4.0mA; VCC=4.5V 3.7 IO=-5.2mA; VCC=6.0V 5.2 IO=20uA; VCC=2.0V - - - - - - - - - - 0.4 IO=20uA; VCC=4.5V VOL VI=VIH or VIL IO=20uA; VCC=6.0V IO=4.0mA; VCC=4.5V IO=5.2mA; VCC=6.0V V V input leakage current II VI=VCC or GND; VCC=6.0V - - ±1.0 uA supply current ICC VI=VCC or GND; IO=0A; VCC=6.0V - - 160 uA SN74HCT42 HIGH-level input voltage VIH VCC=4.5V to 5.5V 2.0 - - V LOW-level input voltage VIL VCC=4.5V to 5.5V - - 0.8 V HIGH-level output voltage VOH VI=VIH or VIL; VCC=4.5V - - V - V LOW-level output voltage VOL VI=VIH or VIL; VCC=4.5V 0.1 V input leakage current II supply current ICC additional supply current ΔICC XBLWversion1.0 IO=-20uA 4.4 IO=-4.0mA 3.7 IO=20uA - - - - 0.4 V VI=VCC or GND; VCC=5.5V - - ±1.0 uA VI=VCC or GND; IO=0A; VCC=5.5V VI=VCC-2.1V; other inputs at VCC or GND; IO=0A; VCC=4.5V to 5.5V - - 160 uA - - 490 uA www.xinboleic.com IO=4.0mA Technical Support:4009682003 6 / 13 XBLW SN74HC/HCT42 BCD to Decimal Decoder（1-of-10） AC Characteristics 1 (Tamb=25℃, GND=0V, CL=50pF, unless otherwise specified.) Parameter Symbol Conditions Min. Typ. Max. Unit - 47 150 ns 17 30 ns 17 ns 14 26 19 75 ns 7 15 ns - 6 13 ns - 37 - pF VCC=4.5V - 20 35 ns VCC=5.0V; CL=15pF - 17 - ns SN74HC42 VCC=2.0V nA tonY propagation delay tpd see Figure 6[1] VCC=4.5V VCC=5.0V; CL=15pF - VCC=6.0V - VCC=2.0V transition time tt [2] VCC=4.5V see Figure 6 VCC=6.0V power dissipation capacitanc e CPD nA tonY propagation delay tpd transition time power dissipation capacitanc e per package; VI=GND to VCC[3] - ns SN74HCT42 see Figure 6[1] [2] tt VCC=4.5V; see Figure 6 - 7 15 ns CPD per package; VI=GND to VCC- 1.5V[3] - 37 - pF Min. Typ. Max. Unit - - 190 ns - - 38 ns - - 33 ns - - 95 ns - - 19 ns - - 16 ns - - 44 ns - - 19 ns Note: [1] tpd is the same as tPLH and tPHL. [2] tt is the sameastTHL and tTLH. [3] CPD isused to determine the dynamic power dissipation (PD in uW). PD=CPD ×VCC2 ×fi×N+Σ(CL×VCC2 ×fo) where: f i=input frequency in MHz; fo=output frequency in MHz; CL=output load capacitance in pF; VCC=supply voltage in V; N=number of inputs switching; Σ(CL×VCC2 ×fo)=sum of outputs AC Characteristics 2 (Tamb=-40℃ to +85℃, GND=0V, CL=50pF, unless otherwise specified.) Parameter Symbol Conditions SN74HC42 nA tonY propagation delay VCC=2.0V tpd see Figure 6[1] VCC=4.5V VCC=6.0V VCC=2.0V transition time tt [2] VCC=4.5V see Figure 6 VCC=6.0V SN74HCT42 nA tonY propagation delay tpd transition time tt Note: XBLWversion1.0 see Figure 6[1] VCC=4.5V VCC=4.5V; see Figure 6[2] www.xinboleic.com Technical Support:4009682003 7 / 13 XBLW SN74HC/HCT42 BCD to Decimal Decoder（1-of-10） [1] tpd is the same as tPLH and tPHL. [2] tt is the sameastTHL and tTLH. AC Characteristics 3 (Tamb=-40℃ to +125℃, GND=0V, CL=50pF, unless otherwise specified.) Parameter Symbol Conditions Min. Typ. Max. Unit - - 225 ns - - 45 ns - - - - - - - SN74HC42 nA tonY propagation delay VCC=2.0V [1] tpd see Figure 6 VCC=4.5V VCC=6.0V VCC=2.0V transition time [2] VCC=4.5V see Figure 6 tt VCC=6.0V SN74HCT42 nA tonY propagation delay tpd transition time tt see Figure 6[1] Note: [1] tpd is the same as tPLH and tPHL. VCC=4.5V VCC=4.5V; see Figure 6[2] 38 ns 110 ns 22 ns - 19 ns - - 53 ns - - 22 ns [2] tt is the sameastTHL and tTLH Testing Circuit AC Testing Circuit Figure 5. Test circuit for measuring switching times Definitions for test circuit: XBLWversion1.0 www.xinboleic.com Technical Support:4009682003 8 / 13 XBLW SN74HC/HCT42 BCD to Decimal Decoder（1-of-10） CL=Load capacitance including jig and probe capacitance. RT=Termination resistance should be equal to the output impedance Zo of the pulse generator. RL=Load resistance. S1=Test selection switch AC Testing Waveforms Figure 6. Input (nA) to output (nY) propagation delays and output transition times Measurement Points Input Type Output SN74HC42 VM VM VX VY 0.5×VCC 0.5×VCC 0.1×VCC 0.9×VCC SN74HCT42 1.3V 1.3V 0.1×VCC 0.9×VCC Test Data Type Input VI Load SN74HC42 VCC t r ,t f 6ns SN74HCT42 3V 6ns XBLWversion1.0 www.xinboleic.com CL 15pF, 50pF 15pF, 50pF RL 1k Ω 1k Ω Technical Support:4009682003 S1 position tPLH , tPHL open open 9 / 13 XBLW SN74HC/HCT42 BCD to Decimal Decoder（1-of-10） Package Information DIP16 XBLWversion1.0 www.xinboleic.com Technical Support:4009682003 10 / 13 XBLW SN74HC/HCT42 BCD to Decimal Decoder（1-of-10） SOP16 XBLWversion1.0 www.xinboleic.com Technical Support:4009682003 11 / 13 XBLW SN74HC/HCT42 BCD to Decimal Decoder（1-of-10） TSSOP16 XBLWversion1.0 www.xinboleic.com Technical Support:4009682003 12 / 13 XBLW SN74HC/HCT42 BCD to Decimal Decoder（1-of-10） Statement：  Shenzhen xinbole electronics co., ltd. reserves the right to change the product specifications, without notice! Before placing an order, the customer needs to confirm whether the information obtained is the latest version, and verify the integrity of the relevant information.  Any semiconductor product is liable to fail or malfunction under certain conditions, and the buyer shall be responsible for complying with safety standards in the system design and whole machine manufacturing using Shenzhen xinbole electronics co., ltd products, and take appropriate security measures to avoid the potential risk of failure may result in personal injury or property losses of the situation occurred!  This document is for referenceonly,and the actual use should be based on the application test results.  Product performance is never ending, Shenzhen xinbole electronics co., ltd will be dedicated to provide customers with better performance, better quality of integrated circuit products. XBLWversion1.0 www.xinboleic.com Technical Support:4009682003 13 / 13