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Details, datasheet, quote on part number:SN54HC20
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Datasheet text preview:
SN54HC20, SN74HC20 DUAL 4 INPUT POSITIVE NAND GATES
SCLS086E DECEMBER 1982 REVISED NOVEMBER 2002
D Wide Operating Voltage Range of 2 V to 6 V D Outputs Can Drive Up to 10 LSTTL Loads D Low Power Consumption, 20-µA Max ICC
SN54HC20 . . . J OR W PACKAGE SN74HC20 . . . D, DB, N, NS, OR PW PACKAGE (TOP VIEW)
D Typical tpd = 11 ns D ±4-mA Output Drive at 5 V D Low Input Current of 1 µA Max
SN54HC20 . . . FK PACKAGE (TOP VIEW)
1A 1B NC 1C 1D 1Y GND
1 2 3 4 5 6 7
14 13 12 11 10 9 8
VCC 2D 2C NC 2B 2A 2Y
1B 1A NC VCC 2D NC NC 1C NC 1D
4 5 6 7 8 3 2 1 20 19 18 17 16 15 14 9 10 11 12 13
2C NC NC NC 2B
NC No internal connection
description/ordering information
The 'HC20 devices contain two independent 4-input NAND gates. They perform the Boolean function Y = A · B · C · D or Y = A + B + C + D in positive logic. ORDERING INFORMATION
TA PDIP N SOIC D to 85°C 40°C to 85°C SOP NS SSOP DB TSSOP PW CDIP J 55°C to 125 C 125°C CFP W PACKAGE Tube Tube Tape and reel Tape and reel Tape and reel Tape and reel Tube Tube ORDERABLE PART NUMBER SN74HC20N SN74HC20D SN74HC20DR SN74HC20NSR SN74HC20DBR SN74HC20PWR SNJ54HC20J SNJ54HC20W HC20 HC20 HC20 HC20 SNJ54HC20J SNJ54HC20W TOP-SIDE MARKING SN74HC20N
LCCC FK Tube SNJ54HC20FK SNJ54HC20FK Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. FUNCTION TABLE (each gate) INPUTS A H L X X X B H X L X X C H X X L X D H X X X L OUTPUT Y L H H H H
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
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1Y GND NC 2Y 2A
Copyright 2002, Texas Instruments Incorporated
On products compliant to MIL PRF 38535, all parameters are tested unless otherwise noted. On all other products, production processing does not necessarily include testing of all parameters.
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SN54HC20, SN74HC20 DUAL 4 INPUT POSITIVE NAND GATES
SCLS086E DECEMBER 1982 REVISED NOVEMBER 2002
logic diagram (positive logic)
1A 1B 1C 1D 1 2 4 5 6 1Y 2A 2B 2C 2D 9 10 12 13 8 2Y
Pin numbers shown are for the D, DB, J, N, NS, PW, and W packages.
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 V to 7 V Input clamp current, IIK (VI VCC) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA Output clamp current, IOK (VO VCC) (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA Continuous output current, IO (VO = 0 to VCC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±25 mA Continuous current through VCC or GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±50 mA Package thermal impedance, JA (see Note 2): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86°C/W DB package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96°C/W N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80°C/W NS package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76°C/W PW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113°C/W Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C to 150°C
Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed. 2. The package thermal impedance is calculated in accordance with JESD 51-7.
recommended operating conditions (see Note 3)
SN54HC20 MIN VCC VIH Supply voltage VCC = 2 V VCC = 4.5 V VCC = 6 V VCC = 2 V VIL VI VO t/v Low-level in ut voltage input Input voltage Output voltage VCC = 2 V VCC = 4.5 V VCC = 6 V VCC = 4.5 V VCC = 6 V 0 0 2 1.5 3.15 4.2 0.5 1.35 1.8 VCC VCC 1000 500 400 0 0 NOM 5 MAX 6 SN74HC20 MIN 2 1.5 3.15 4.2 0.5 1.35 1.8 VCC VCC 1000 500 400 ns V V V V NOM 5 MAX 6 UNIT V
High-level in ut voltage input
Input transition rise/fall time
TA Operating free-air temperature 55 125 40 85 °C NOTE 3: All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report, Implications of Slow or Floating CMOS Inputs, literature number SCBA004.
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POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
SN54HC20, SN74HC20 DUAL 4 INPUT POSITIVE NAND GATES
SCLS086E DECEMBER 1982 REVISED NOVEMBER 2002
electrical characteristics over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS CONDITIONS VCC 2V IOH = 20 µA 20 VOH VI = VIH or VIL IOH = 4 mA IOH = 5.2 mA IOL = 20 µA VOL VI = VIH or VIL IOL = 4 mA IOL = 5.2 mA II ICC Ci VI = VCC or 0 VI = VCC or 0, IO = 0 4.5 V 6V 4.5 V 6V 2V 4.5 V 6V 4.5 V 6V 6V 6V 2 V to 6 V 3 MIN 1.9 4.4 5.9 3.98 5.48 TA = 25°C TYP MAX 1.998 4.499 5.999 4.3 5.8 0.002 0.001 0.001 0.17 0.15 ±0.1 0.1 0.1 0.1 0.26 0.26 ±100 2 10 SN54HC20 MIN 1.9 4.4 5.9 3.7 5.2 0.1 0.1 0.1 0.4 0.4 ±1000 40 10 MAX SN74HC20 MIN 1.9 4.4 5.9 3.84 5.34 0.1 0.1 0.1 0.33 0.33 ±1000 20 10 nA µA pF V V MAX UNIT
switching characteristics over recommended operating free-air temperature range, CL = 50 pF (unless otherwise noted) (see Figure 1)
PARAMETER FROM (INPUT) TO (OUTPUT) VCC 2V tpd A, B, C, or D Y 4.5 V 6V 2V tt Y 4.5 V 6V MIN TA = 25°C TYP MAX 45 14 11 27 9 7 110 22 19 75 15 13 SN54HC20 MIN MAX 165 33 28 110 22 19 SN74HC20 MIN MAX 140 28 24 95 19 16 ns ns UNIT
operating characteristics, TA = 25°C
PARAMETER Cpd Power dissipation capacitance TEST CONDITIONS No load TYP 25 UNIT pF
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