74VHCT138 Fast Delivery |IC PHOENIX CO.,LIMITED

74VHCT138 ,3 TO 8 LINE DECODER INVERTING74VHCT138A 3 TO 8 LINE DECODER (INVERTING)PRELIMINARY DATAn HIGH SPEED: t = 7.6 ns (TYP.) at V =5V ..
74VHCT138A ,3-to-8 Decoder/DemultiplexerElectrical CharacteristicsT = 25°CT = - 40°C to +85°CV A ACCSymbol Parameter Units Conditions(V)Min ..
74VHCT138A ,3-to-8 Decoder/DemultiplexerFeaturesWhen the device is enabled, 3 Binary Select inputs (A , A0 1 High Speed: t = 7.6 ns (typ) a ..
74VHCT138AMTC ,3-to-8 Decoder/DemultiplexerGeneral Descriptioncuits prevent device destruction due to mismatched supplyThe VHCT138A is an adva ..
74VHCT138AMTCX ,3-to-8 Decoder/DemultiplexerFeaturesWhen the device is enabled, 3 Binary Select inputs (A , A0 1 High Speed: t = 7.6 ns (typ) a ..
74VHCT138ASJ ,3-to-8 Decoder/Demultiplexer74VHCT138A 3-to-8 Decoder/DemultiplexerJune 1997Revised April 199974VHCT138A 3-to-8 Decoder/Demulti ..
892NCF-101M , Fixed Inductors for Surface Mounting

74VHCT138
3 TO 8 LINE DECODER INVERTING
74VHCT138A TO 8 LINE DECODER (INVERTING)
PRELIMINARY DATA
March 2000 HIGH SPEED:tPD =7.6ns (TYP.)at VCC =5V LOWPOWER DISSIPATION:
ICC =4 μA (MAX.)atTA =25oC COMPATIBLEWITH TTL OUTPUTS:
VIH =2V (MIN), VIL= 0.8V(MAX) POWERDOWN PROTECTIONON INPUTS&
OUTPUTS SYMMETRICAL OUTPUT IMPEDANCE:
|IOH|=IOL=8 mA(MIN) BALANCED PROPAGATIONDELAYS:
tPLH≅ tPHL OPERATINGVOLTAGERANGE:
VCC (OPR)= 4.5Vto 5.5V PIN AND FUNCTION COMPATIBLE WITH SERIES138 IMPROVEDLATCH-UP IMMUNITY LOWNOISE: VOLP= 0.8V (Max.)
DESCRIPTION
The 74VHCT138Ais an advanced high-speed
CMOS3 TO8 LINE DECODER (INVERTING)
fabricated with sub-micron silicon gate and
double-layermetal wiringC2 MOS technology. the deviceis enabled,3 binary select inputs (A, andC) determine which oneof the outputs will low.If enable input G1is held lowor either
G2Aor G2Bis held high, the decoding functionis
inhibited andall the8 outputsgoto high.
Three enable inputs are provided to ease
cascade connection and applicationof address
decodersfor memory systems.
Power down protectionis provided on all inputs
and outputs and0to 7V can be accepted on
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.
PIN CONNECTION AND IEC LOGIC SYMBOLS
SOP TSSOP
ORDER CODES
PACKAGE TUBE T&R
SOP 74VHCT138AM 74VHCT138AMTR
TSSOP 74VHCT138ATTR
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INPUT EQUIVALENT CIRCUIT
LOGIC DIAGRAM
PIN DESCRIPTION
PIN No SYMBOL NAME AND FUNCTION2,3 A,B,C Address Inputs5 G2A, G2B Enable Inputs G1 Enable Input
15, 14,13,
12, 11,10,7toY7 Outputs GND Ground (0V) VCC Positive Supply Voltage
TRUTH TABLE
INPUTS OUTPUTS
ENABLE SELECT
G2B G2A G1 C B A Y0Y1Y2Y3 Y4 Y5Y6Y7 X L X X X HHHHH H H H H X X X X HHHHH H H H X X X X X HHHHH H H H L H L L L L HHHH H H H L HL LH HLH H H H H H L HLHL H H LH H H H H L H L HH HHH L H H H H L HH L L HHHH L H H H L HH L H HHHHH L H H L HHH L HHHHH H L H L HHHH HHHHH H H L
X:Don’t Care
Thislogicdiagram hasnotbeusedtoestimate propagation delays
74VHCT138A
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RECOMMENDED OPERATING CONDITIONS
Symbol Parameter Value Unit
VCC Supply Voltage 4.5to5.5 V Input Voltage 0to5.5 V Output Voltage (see note1) 0to5.5 V Output Voltage (see note2) 0to VCC V
Top Operating Temperature -40to +85 oC
dt/dv Input Rise and Fall Time (see note3) (VCC =5.0± 0.5V) 0to20 ns/V
1)VCC=0
2)HighorLow State
3)VINfrom0.8Vto2V
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 (see note1) -0.5to +7.0 V DC Output Voltage (see note2) -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.
1)VCC=0
2)HighorLow State SPECIFICATIONS
Symbol Parameter Test Conditions Value Unit
VCC
(V) =25oC -40to85oC
Min. Typ. Max. Min. Max.
VIH High Level Input
Voltage
4.5to5.5 2 2 V
VIL Low Level Input
Voltage
4.5to5.5 0.8 0.8 V
VOH High Level Output
Voltage
4.5 IO=-50μA 4.4 4.5 4.4 V
4.5 IO=-8 mA 3.94 3.8
VOL Low Level Output
Voltage
4.5 IO=50 μA 0.0 0.1 0.1 V
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 4 40 μA
ΔICC Additional Worst Case
Supply Current
5.5 One Inputat 3.4V,
other inputat VCCor
GND
1.35 1.5 mA
IOPD Output Leakage
Current
0VOUT= 5.5V 0.5 5.0 μA
74VHCT138A
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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 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
TimeA,B,CtoY
5.0(*) 15 7.6 10.4 1.0 12.0 ns
5.0(*) 50 8.1 11.4 1.0 13.0
tPLH
tPHL
Propagation Delay
Time G1toY
5.0(*) 15 6.6 9.1 1.0 10.5 ns5.0(*) 50 7.1 10.1 1.0 11.5
tPLH
tPHL
Propagation Delay
Time G2A, G2BtoY
5.0(*) 15 7.0 9.6 1.0 11.0 ns5.0(*) 50 7.5 10.6 1.0 12.0
(*) Voltagerangeis5V± 0.5V
TEST CIRCUIT =15/50 pForequivalent (includes jigand probecapacitance)
RT=ZOUTofpulsegenerator (typically50Ω)
74VHCT138A
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WAVEFORM2: PROPAGATION DELAYS FOR NON-INVERTING OUTPUTS (f=1MHz; 50%duty cycle)
WAVEFORM1: PROPAGATION DELAYS FOR INVERTING OUTPUTS (f=1MHz; 50% duty cycle)
74VHCT138A
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DIM. mm inch
MIN. TYP. MAX. MIN. TYP. MAX. 1.75 0.068 0.1 0.2 0.004 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.) 9.8 10 0.385 0.393 5.8 6.2 0.228 0.244 1.27 0.050 8.89 0.350 3.8 4.0 0.149 0.157 4.6 5.3 0.181 0.208 0.5 1.27 0.019 0.050 0.62 0.024 8 (max.)
P013H
SO-16 MECHANICAL DATA
74VHCT138A
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Partno	Mfg	Dc	Qty	Available	Descript
74VHCT138	ST	N/a	10	avai	3 TO 8 LINE DECODER INVERTING