74AHC259PW ,8-bit addressable latchFEATURES DESCRIPTION• ESD protection: The 74AHC/AHCT259 are high-speed Si-gate CMOSHBM EIA/JESD22-A ..
74AHC273 ,positive-edge trigger
74AHC273BQ ,Octal D-type flip-flop with reset; positive-edge triggerGeneral descriptionThe 74AHC273; 74AHCT273 is a high-speed Si-gate CMOS device and is pin compatibl ..
74AHC273PW ,Octal D-type flip-flop with reset; positive-edge triggerFeaturesn Balanced propagation delaysn All inputs have Schmitt-trigger actionsn Inputs accept volta ..
74AHC2G00DP ,74AHC2G00; 74AHCT2G00; 2-input NAND gateINTEGRATED CIRCUITSDATA SHEET74AHC2G00; 74AHCT2G002-input NAND gateProduct specification 2004 Jan 21 ..
74AHC2G125DP ,Bus buffer/line driver 3-stateINTEGRATED CIRCUITSDATA SHEET74AHC2G125; 74AHCT2G125Bus buffer/line driver; 3-stateProduct specifica ..
74HC368N ,74HC/HCT368; Hex buffer/line driver; 3-state; invertingGENERAL DESCRIPTIONThe 74HC/HCT368 are high-speed Si-gate CMOS devicesand are pin compatible with l ..
74HC373D ,74HC/HCT373; Octal D-type transparent latch; 3-stateLogic diagram (one latch) D0 D1 D2 D3 D4 D5 D6 D7D Q D Q D Q D Q D Q D Q D Q D QLATCH LATCH LATCH L ..
74HC373DB ,74HC/HCT373; Octal D-type transparent latch; 3-stateapplications. A latch enable (LE)QUICK REFERENCE DATAGND = 0 V; T =25 °C; t =t = 6 nsamb r fTYPICAL ..
74HC373DB ,74HC/HCT373; Octal D-type transparent latch; 3-stateFEATURES input and an output enable (OE) input are common to alllatches.• 3-state non-inverting out ..
74HC373DB ,74HC/HCT373; Octal D-type transparent latch; 3-stateLogic diagram (one latch) D0 D1 D2 D3 D4 D5 D6 D7D Q D Q D Q D Q D Q D Q D Q D QLATCH LATCH LATCH L ..
74HC373N ,Octal D-type transparent latch; 3-stateGeneral descriptionThe 74HC373; 74HCT373 is a high-speed Si-gate CMOS device and is pin compatible ..
74AHC259PW
8-bit addressable latch
Philips Semiconductors Product specification
8-bit addressable latch 74AHC259;
74AHCT259
FEATURES ESD protection:
HBM EIA/JESD22-A114-A exceeds 2000V EIA/JESD22-A115-A exceeds 200V
CDM EIA/JESD22-C101 exceeds 1000V Balanced propagation delays All inputs have Schmitt-trigger actions Combines demultiplexer and 8-bit latch Serial-to-parallel capability Output from each storage bit available Random (addressable) data entry Easily expandable Common reset input Useful as a 3-to-8 active HIGH decoder Inputs accept voltages higher than VCC For AHC only: operates with CMOS input levels For AHCT only: operates with TTL input levels Specified from −40to +85 °C and from −40to +125 °C.
DESCRIPTIONThe 74AHC/AHCT259 are high-speed Si-gate CMOS
devices and are pin compatible with Low power Schottky
TTL (LSTTL). They are specified in compliance with
JEDEC standard No. 7A.
The 74AHC/AHCT259 are high-speed 8-bit addressable
latches designedfor general purpose storage applications
in digital systems. The ‘259’ are multifunctional devices
capable of storing single-line data in eight addressable
latches, and also 3-to-8 decoder and demultiplexer, with
active HIGH outputs (Q0to Q7), functions are available.
The ‘259’ also incorporatesan active LOW common reset
(MR) for resetting all latches as well as an active LOW
enable input (LE).
The ‘259’ has four modes of operation as shown in the
mode select table.In the addressable latch mode, dataon
the data line (D) is written into the addressed latch. The
addressed latch will follow the data input with all non-
addressed latches remaining in their previous states. the memory mode, all latches remain in their previous
states and are unaffected by the data or address inputs.
In the 3-to-8 decoding or demultiplexing mode, the
addressed output follows the stateof the (D) input withall
other outputs in the LOW state. In the reset mode all
outputs are LOW and unaffected by the address
(A0to A2) and data (D) input. When operating the ‘259’as
an address latch, changing more than one bit of the
address could impose a transient-wrong address.
Therefore, this should only be done while in the memory
mode.
The mode select table summarizes the operations of
the ‘259’.
Philips Semiconductors Product specification
8-bit addressable latch 74AHC259;
74AHCT259
QUICK REFERENCE DATAGND=0 V; Tamb =25 °C; tr =tf≤ 3.0 ns.
Notes CPD is used to determine the dynamic power dissipation (PDin μW). =CPD× VCC2×fi+∑ (CL× VCC2×fo) where:= input frequency in MHz;= output frequency in MHz; (CL× VCC2×fo)= sum of outputs;= output load capacitance in pF;
VCC= supply voltage in Volts. The condition is VI= GNDto VCC.
Philips Semiconductors Product specification
8-bit addressable latch 74AHC259;
74AHCT259
FUNCTION TABLESee note1.
Note H= HIGH voltage level;= LOW voltage level;= don’t care;= HIGH or LOW data one set-up time prior to the LOW-to-HIGH LE transition;= lower case letters indicate the state of the referenced output established during the last cycle in which it was
addressed or cleared.
ORDERING INFORMATION
Philips Semiconductors Product specification
8-bit addressable latch 74AHC259;
74AHCT259
PINNING
Philips Semiconductors Product specification
8-bit addressable latch 74AHC259;
74AHCT259
OPERATING MODE SELECT TABLE
Note H= HIGH voltage level;= LOW voltage level.
Philips Semiconductors Product specification
8-bit addressable latch 74AHC259;
74AHCT259
RECOMMENDED OPERATING CONDITIONS
LIMITING VALUES accordance with the Absolute Maximum Rating System (IEC 60134); voltages are referencedto GND (ground=0 V).
Notes The input and output voltage ratings may be exceeded if the input and output current ratings are observed. For SO packages: above 70 °C the value of PD derates linearly with 8 mW/K.
For TSSOP packages: above 60 °C the value of PD derates linearly with 5.5 mW/K.
Philips Semiconductors Product specification
8-bit addressable latch 74AHC259;
74AHCT259
DC CHARACTERISTICS
74AHC familyOver recommended operating conditions; voltages are referenced to GND (ground=0V).
Philips Semiconductors Product specification
8-bit addressable latch 74AHC259;
74AHCT259
74AHCT familyOver recommended operating conditions; voltages are referenced to GND (ground=0V).
Philips Semiconductors Product specification
8-bit addressable latch 74AHC259;
74AHCT259
AC CHARACTERISTICS
Type 74AHC259GND=0 V; tr =tf≤ 3.0 ns.
