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74VHC139 Schematic ( PDF Datasheet ) - STMicroelectronics

Teilenummer 74VHC139
Beschreibung DUAL 2 TO 4 DECODER / DEMULTIPLEXER
Hersteller STMicroelectronics
Logo STMicroelectronics Logo 




Gesamt 12 Seiten
74VHC139 Datasheet, Funktion
74VHC139
DUAL 2 TO 4 DECODER/DEMULTIPLEXER
s HIGH SPEED: tPD = 5.0 ns (TYP.) at VCC = 5V
s LOW POWER DISSIPATION:
ICC = 4 µA (MAX.) at TA=25°C
s HIGH NOISE IMMUNITY:
VNIH = VNIL = 28% VCC (MIN.)
)s POWER DOWN PROTECTION ON INPUTS
t(ss SYMMETRICAL OUTPUT IMPEDANCE:
c|IOH| = IOL = 8 mA (MIN)
us BALANCED PROPAGATION DELAYS:
dtPLH tPHL
ro )s OPERATING VOLTAGE RANGE:
P t(sVCC(OPR) = 2V to 5.5V
s PIN AND FUNCTION COMPATIBLE WITH
lete uc74 SERIES 139
ds IMPROVED LATCH-UP IMMUNITY
bso ProDESCRIPTION
The 74VHC139 is an advanced high-speed
- O teCMOS DUAL 2 TO 4 LINE DECODER/
) leDEMULTIPLEXER fabricated with sub-micron
t(s osilicon gate and double-layer metal wiring C2MOS
stechnology.
c bThe active low enable input can be used for gating
u Oor as a data input for demultiplexing applications.
rod -While the enable input is held high, all four outputs
P t(s)are high independently of the other inputs.
SOP
TSSOP
Table 1: Order Codes
PACKAGE
SOP
TSSOP
T&R
74VHC139MTR
74VHC139TTR
Power down protection is provided on all inputs
and 0 to 7V can be accepted on inputs with no
regard to the supply voltage. This device can be
used to interface 5V to 3V.
All inputs and outputs are equipped with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.
ObsOoblestoelePteroducFigure 1: Pin Connection And IEC Logic Symbols
November 2004
Rev. 4
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74VHC139 Datasheet, Funktion
74VHC139
Figure 6: Waveform - Propagation Delays For Non-inverting Outputs (f=1MHz; 50% duty cycle)
ObsOoblestoelePteroPdruocdt(usc)t(-sO) -bsOoblestoelePteroPdruocdt(usc)t(s)
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74VHC139 pdf, datenblatt
74VHC139
ObstoelePteroPdruocdt(usc)t(-sO) -bsOoblestoelePteroPdruocdt(usc)t(s)Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences
of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted
leby implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject
oto change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not
sauthorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
Ob The ST logo is a registered trademark of STMicroelectronics
All other names are the property of their respective owners
© 2004 STMicroelectronics - All Rights Reserved
STMicroelectronics group of companies
Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan -
Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America
www.st.com
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