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74VHC125 Schematic ( PDF Datasheet ) - STMicroelectronics

Teilenummer 74VHC125
Beschreibung QUAD BUS BUFFERS 3-STATE
Hersteller STMicroelectronics
Logo STMicroelectronics Logo 




Gesamt 12 Seiten
74VHC125 Datasheet, Funktion
74VHC125
QUAD BUS BUFFERS (3-STATE)
s HIGH SPEED: tPD = 3.8ns (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
s SYMMETRICAL OUTPUT IMPEDANCE:
|IOH| = IOL = 8mA (MIN)
s BALANCED PROPAGATION DELAYS:
tPLH tPHL
s OPERATING VOLTAGE RANGE:
VCC(OPR) = 2V to 5.5V
s PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 125
s IMPROVED LATCH-UP IMMUNITY
s LOW NOISE: VOLP = 0.8V (MAX.)
DESCRIPTION
The 74VHC125 is an advanced high-speed
CMOS QUAD BUS BUFFERS fabricated with
sub-micron silicon gate and double-layer metal
wiring C2MOS technology.
The device requires the 3-STATE control input G
to be set high to place the output in to the high
impedance state.
SOP
TSSOP
Table 1: Order Codes
PACKAGE
SOP
TSSOP
T&R
74VHC125MTR
74VHC125TTR
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.
Figure 1: Pin Connection And IEC Logic Symbols
November 2004
Rev. 7
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74VHC125 Datasheet, Funktion
74VHC125
Figure 5: Waveform - Output Enable And Disable Time (f=1MHz; 50% duty cycle)
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74VHC125 pdf, datenblatt
74VHC125
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
by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject
to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not
authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
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
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