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Partno	Mfg	Dc	Qty	Available	Descript
74VHC27T		N/a	3994	avai	TRIPLE 3-INPUT NOR GATE

74VHC27T ,TRIPLE 3-INPUT NOR GATEABSOLUTE MAXIMUM RATINGSSymbol Parameter Value UnitV Supply Voltage -0.5 to +7.0 VCCV DC Input Volt ..
74VHC27TTR ,TRIPLE 3-INPUT NOR GATE74VHC27TRIPLE 3-INPUT NOR GATE ■ HIGH SPEED: t = 4.1 ns (TYP.) at V = 5VPD CC■ LOW POWER DISSIPATI ..
74VHC32 ,QUAD 2-INPUT OR GATE74VHC32QUAD 2-INPUT OR GATE

74VHC27T
TRIPLE 3-INPUT NOR GATE
74VHC27
TRIPLE 3-INPUT NOR GATE
PRELIMINARY DATA
June 1999
PIN CONNECTION AND IEC LOGIC SYMBOLS HIGH SPEED:tPD =4.1ns (TYP.)at VCC =5V LOWPOWER DISSIPATION:
ICC =2 μA (MAX.)atTA =25oC HIGH NOISE IMMUNITY:
VNIH =VNIL =28% VCC (MIN.) POWERDOWN PROTECTIONON INPUTS SYMMETRICAL OUTPUT IMPEDANCE:
|IOH|=IOL=8 mA(MIN) BALANCED PROPAGATIONDELAYS:
tPLH≅ tPHL OPERATINGVOLTAGERANGE:
VCC (OPR)= 2Vto 5.5V PIN AND FUNCTION COMPATIBLE WITH SERIES27 IMPROVEDLATCH-UP IMMUNITY
DESCRIPTION
The 74VHC27isan advanced high-speed CMOS
TRIPLE 3-INPUT NOR GATE fabricated with
sub-micron silicon gate and double-layer metal
wiringC2 MOS technology.
The internal circuitis composed of3 stages
including buffer output, which provides high noise
immunity and stable output.
Power down protectionis provided on all inputs
and0to 7V can be acceptedon inputs with no
regardto the supply voltage. This device canbe
usedto interface5Vto 3V.
All inputs and outputs are equipped with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.
ORDER CODES:
74VHC27M 74VHC27T
(Micro Package)
(TSSOP Package)
1/7
TRUTH TABLE CY
LLL H X L X L H L
X:”H”or”L”
PIN DESCRIPTION
PIN No SYMBOL NAME AND FUNCTION3,9 1Ato3A Data Inputs4,10 1Bto3B Data Inputs
13,5,11 1Cto3C Data Inputs
12,6,8 1Yto3Y Data Outputs GND Ground (0V) VCC Positive Supply Voltage
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
VCC Supply Voltage -0.5to +7.0 V DC Input Voltage -0.5to +7.0 V DC Output Voltage -0.5to VCC+ 0.5 V
IIK DC Input Diode Current -20 mA
IOK DC Output Diode Current ±20 mA DC Output Current ±25 mA
ICCor IGND DC VCCor Ground Current ±50 mA
Tstg Storage Temperature -65to +150 oC Lead Temperature (10 sec) 300 oC
AbsoluteMaximumRatingsarethosevalues beyond whichdamage tothedevicemayoccur. Functionaloperationunderthese condition isnot implied.
RECOMMENDED OPERATING CONDITIONS
Symbol Parameter Value Unit
VCC Supply Voltage 2.0to5.5 V Input Voltage 0to5.5 V Output Voltage 0to VCC V
Top Operating Temperature -40to +85 oC
dt/dv Input Rise and Fall Time (see note1) (VCC =3.3± 0.3V)
(VCC =5.0± 0.5V)to 100
0to20
ns/V
ns/V
1)VINfrom30%to70%ofVCC
INPUT EQUIVALENT CIRCUIT
74VHC27
2/7
SPECIFICATIONSSymbol Parameter Test Conditions Value Unit
VCC
(V) =25oC -40to85oC
Min. Typ. Max. Min. Max.
VIH High Level Input
Voltage
2.0 1.5 1.5 V
3.0to5.5 0.7VCC 0.7VCC
VIL Low Level Input
Voltage
2.0 0.5 0.5 V3.0to5.5 0.3VCC 0.3VCC
VOH High Level Output
Voltage
2.0 IO=-50μA 1.9 2.0 1.9
3.0 IO=-50μA 2.9 3.0 2.9
4.5 IO=-50μA 4.4 4.5 4.4
3.0 IO=-4 mA 2.58 2.48
4.5 IO=-8 mA 3.94 3.8
VOL Low Level Output
Voltage
2.0 IO=50μA 0.0 0.1 0.1
3.0 IO=50μA 0.0 0.1 0.1
4.5 IO=50μA 0.0 0.1 0.1
3.0 IO=4 mA 0.36 0.44
4.5 IO=8 mA 0.36 0.44 Input Leakage Current 0 to5.5 VI= 5.5Vor GND ±0.1 ±1.0 μA
ICC Quiescent Supply
Current
5.5 VI =VCCor GND 2 20 μA
CAPACITIVE CHARACTERISTICS
Symbol Parameter Test Conditions Value Unit =25oC -40to85oC
Min. Typ. Max. Min. Max.
CIN Input Capacitance 4 10 10 pF
CPD Power Dissipation
Capacitance (note1) pF
1)CPDisdefinedasthevalueoftheIC’sinternalequivalentcapacitance whichiscalculatedfromtheoperatingcurrentconsumption withoutload.(Referto
TestCircuit).Average operatingcurrent canbeobtained bythefollowingequation. ICC(opr)= CPD• VCC• fIN+ICC/4(per Gate) ELECTRICAL CHARACTERISTICS (Inputtr =tf=3 ns)
Symbol Parameter Test Condition Value Unit
VCC
(V)
(pF) =25oC -40to85oC
Min. Typ. Max. Min. Max.
tPLH
tPHL
Propagation Delay
Time
3.3(*) 15 6.2 8.8 1.0 10.53.3(*) 50 8.7 12.3 1.0 14.0
5.0(**) 15 4.1 5.9 1.0 7.0
5.0(**) 50 5.6 7.9 1.0 9.0
(*) Voltagerangeis3.3V ±0.3V
(**) Voltagerangeis 5V±0.5V
74VHC27
3/7
TEST CIRCUIT =15/50 pForequivalent (includes jigand probecapacitance)
RT=ZOUTofpulsegenerator (typically50Ω)
WAVEFORM: PROPAGATION DELAYS (f=1MHz; 50% duty cycle)
74VHC27
4/7
DIM. mm inch
MIN. TYP. MAX. MIN. TYP. MAX. 1.75 0.068 0.1 0.2 0.003 0.007 1.65 0.064 0.35 0.46 0.013 0.018 0.19 0.25 0.007 0.010 0.5 0.019 45 (typ.) 8.55 8.75 0.336 0.344 5.8 6.2 0.228 0.244 1.27 0.050 7.62 0.300 3.8 4.0 0.149 0.157 4.6 5.3 0.181 0.208 0.5 1.27 0.019 0.050 0.68 0.026 8 (max.)
P013G
SO-14 MECHANICAL DATA
74VHC27
5/7
DIM. mm inch
MIN. TYP. MAX. MIN. TYP. MAX. 1.1 0.433 0.05 0.10 0.15 0.002 0.004 0.006 0.85 0.9 0.95 0.335 0.354 0.374 0.19 0.30 0.0075 0.0118 0.09 0.20 0.0035 0.0079 4.9 5 5.1 0.193 0.197 0.201 6.25 6.4 6.5 0.246 0.252 0.256 4.3 4.4 4.48 0.169 0.173 0.176 0.65 BSC 0.0256 BSCo 4o 8o 0o 4o 8o 0.50 0.60 0.70 0.020 0.024 0.028 EbA
PIN1 IDENTIFICATION LKe
TSSOP14 MECHANICAL DATA
74VHC27
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