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Details, datasheet, quote on part number:SN54HC21J
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Datasheet text preview:
SN54HC21, SN74HC21 DUAL 4-INPUT POSITIVE-AND GATES
SCLS087E DECEMBER 1982 REVISED AUGUST 2003
D D D
Wide Operating Voltage Range of 2 V to 6 V Outputs Can Drive Up To 10 LSTTL Loads Low Power Consumption, 20-µA Max ICC
SN54HC21 . . . J OR W PACKAGE SN74HC21 . . . D, N, NS, OR PW PACKAGE (TOP VIEW)
D D D
Typical tpd = 11 ns ±4-mA Output Drive at 5 V Low Input Current of 1 µA Max
SN54HC21 . . . 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
These devices contain two independent 4-input AND gates. They perform the Boolean function Y A · B · C · D or Y A B C D in positive logic.
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+)))
PACKAGE
ORDERING INFORMATION
TA PDIP N SOIC D 40°C to 85 C 85°C SOP NS TSSOP PW CDIP J 55°C to 125 C 125°C CFP W LCCC FK ORDERABLE PART NUMBER SN74HC21N SN74HC21D SN74HC21DR SN74HC21DT SN74HC21NSR SN74HC21PW SN74HC21PWR SN74HC21PWT SNJ54HC21J SNJ54HC21W SNJ54HC21FK SNJ54HC21J SNJ54HC21W HC21 HC21 HC21 TOP-SIDE MARKING SN74HC21N
Tube of 25 Tube of 50 Reel of 2500 Reel of 250 Reel of 2000 Tube of 90 Reel of 2000 Reel of 250 Tube of 25 Tube of 150 Tube of 55
SNJ54HC21FK Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package.
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.
Copyright 2003, 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.
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
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SN54HC21, SN74HC21 DUAL 4-INPUT POSITIVE-AND GATES
SCLS087E DECEMBER 1982 REVISED AUGUST 2003
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 H L L L L
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, 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 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.
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POST OFFICE BOX 655303
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SN54HC21, SN74HC21 DUAL 4-INPUT POSITIVE-AND GATES
SCLS087E DECEMBER 1982 REVISED AUGUST 2003
recommended operating conditions (see Note 3)
SN54HC21 MIN VCC VIH Supply voltage High-level input voltage VCC = 2 V VCC = 4.5 V VCC = 6 V VCC = 2 V VIL VI VO t/v Low-level input voltage Input voltage Output voltage Input transition rise/fall time VCC = 2 V VCC = 4.5 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 0 0 NOM 5 MAX 6 SN74HC21 MIN 2 1.5 3.15 4.2 0.5 1.35 1.8 VCC VCC 1000 500 ns V V V V NOM 5 MAX 6 UNIT V
VCC = 6 V 400 400 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.
electrical characteristics over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS VCC 2V IOH = 20 µA A VOH VI = VIH or VIL IOH = 4 mA IOH = 5.2 mA IOL = 20 µA A 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 SN54HC21 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 SN74HC21 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
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3
SN54HC21, SN74HC21 DUAL 4-INPUT POSITIVE-AND GATES
SCLS087E DECEMBER 1982 REVISED AUGUST 2003
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 44 14 11 29 10 8 110 22 19 75 15 13 SN54HC21 MIN MAX 165 33 28 110 22 19 SN74HC21 MIN MAX 140 28 24 95 19 16 ns ns UNIT
operating characteristics, TA = 25°C
PARAMETER Cpd Power dissipation capacitance per gate TEST CONDITIONS No load TYP 25 UNIT pF
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SN54HC21, SN74HC21 DUAL 4-INPUT POSITIVE-AND GATES
SCLS087E DECEMBER 1982 REVISED AUGUST 2003
PARAMETER MEASUREMENT INFORMATION
From Output Under Test Test Point CL = 50 pF (see Note A) In-Phase Output Input VCC 50% tPLH 50% 10% tPHL Out-of-Phase Output 90% 50% 10% tf 90% tr Input 50% 10% 90% 90% VCC 50% 10% 0 V tf tPLH 50% 10% 90% tr 50% 0V tPHL 90% VOH 50% 10% VOL tf VOH VOL
LOAD CIRCUIT
tr VOLTAGE WAVEFORM INPUT RISE AND FALL TIMES
VOLTAGE WAVEFORMS PROPAGATION DELAY AND OUTPUT TRANSITION TIMES
NOTES: A. CL includes probe and test-fixture capacitance. B. Phase relationships between waveforms were chosen arbitrarily. All input pulses are supplied by generators having the following characteristics: PRR 1 MHz, ZO = 50 , tr = 6 ns, tf = 6 ns. C. The outputs are measured one at a time with one input transition per measurement. D. tPLH and tPHL are the same as tpd.
Figure 1. Load Circuit and Voltage Waveforms
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