74VHCT08 ,Quad 2-Input AND Gate74VHC08 74VHCT08Quad2-InputANDGate#October199574VHC08 74VHCT08#Quad2-InputANDGateGeneralDescription
74VHCT08A ,QUAD 2-INPUT AND GATE74VHCT08AQUAD 2-INPUT AND GATE
74VHCT08
Quad 2-Input AND Gate
TL/F/11514
74VHC08
74VHCT08
Quad
2-Input
AND
Gate
October 1995
74VHC08# 74VHCT08
Quad 2-Input AND Gate
General Description
The 74VHC/VHCT08isan advanced high speed CMOS2
Input AND Gate fabricated with silicon gate CMOS technol-
ogy.It achievesthe high-speed operation similarto equiva-
lent Bipolar SchottkyTTL while maintainingthe CMOSlow
power dissipation.
The internal circuitis composedof4 stages including buffer
output, which provide high noise immunity and stable out-
put.An input protection circuit insuresthat0Vto7Vcanbe
appliedtothe input pins without regardtothe supply volt-
age. This devicecanbe usedto interface5Vto3V systems
andtwo supply systems suchas battery backup. This circuit
prevents device destructiondueto mismatched supplyand
input voltages.
Features High noise immunity:
VHC VNIHe VNILe 28% VCC (min)
VHCTVIHe 2.0V,VILe 0.8V Power down protection:
VHC inputs only
VHCT inputsand outputs Low noise: VOLPe 0.8V (max) Low power dissipation:
ICCe2mA (Max)@TAe 25§C Balanced propagation delays: tPLHj tPHLPinand function compatible with 74HC/HCT08
NOTE:Add externalpullup resistorto VHCT outputsto drive CMOS
inputs
Commercial Package PackageDescriptionNumber
74VHC08M M14A 14-LeadMoldedJEDECSOIC
74VHC08SJ M14D 14-LeadMoldedEIAJSOIC
74VHC08MSC MSC14 14-LeadMoldedEIAJType 1SSOP
74VHC08MTC MTC14 14-LeadMoldedJEDECType 1TSSOP
74VHC08N N14A 14-LeadMoldedDIP
74VHCT08M M14A 14-LeadMoldedJEDECSOIC
74VHCT08SJ M14D 14-LeadMoldedEIAJSOIC
74VHCT08MTC MTC14 14-LeadMoldedJEDECType 1TSSOP
74VHCT08N N14A 14-LeadMoldedDIP
Note: Surface mount packagesarealso availableon TapeandReel. Specify byappending thesuffix letter‘‘X’’tothe orderingcode.
EIAJType1 SSOP availableona TapeandReelonly, orderMSCX.
Logic Symbol
IEEE/IEC
TL/F/11514–1
Connection Diagram
Pin Assignmentfor
DIP, SSOP, TSSOPand SOIC
TL/F/11514–2
Pin Names Description
An,Bn Inputs Outputs
Truth Table
ABO L L L H
C1995National SemiconductorCorporation RRD-B30M125/PrintedinU.S.A.
