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PDF M74HC245 Data sheet ( Hoja de datos )
| Número de pieza | M74HC245 | |
| Descripción | OCTAL BUS TRANSCEIVER | |
| Fabricantes | ST Microelectronics | |
| Logotipo |  |
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M74HC245
OCTAL BUS TRANSCEIVER
WITH 3 STATE OUTPUTS (NON INVERTED)
s HIGH SPEED:
tPD = 10ns (TYP.) at VCC = 6V
s LOW POWER DISSIPATION:
ICC = 4µA(MAX.) at TA=25°C
s HIGH NOISE IMMUNITY:
)VNIH = VNIL = 28 % VCC (MIN.)
t(ss SYMMETRICAL OUTPUT IMPEDANCE:
c|IOH| = IOL = 6mA (MIN)
us BALANCED PROPAGATION DELAYS:
dtPLH ≅ tPHL
ros WIDE OPERATING VOLTAGE RANGE:
PVCC (OPR) = 2V to 6V
s PIN AND FUNCTION COMPATIBLE WITH
te74 SERIES 245
oleDESCRIPTION
bsThe M74HC245 is an advanced high-speed
CMOS OCTAL BUS TRANSCEIVER (3-STATE)
Ofabricated with silicon gate C2MOS technology.
-This IC is intended for two-way asynchronous
t(s)communication between data buses, and the
direction of data transmission is determined by
cDIR input. The enable input G can be used to
DIP
SOP
TSSOP
ORDER CODES
PACKAGE
TUBE
DIP
SOP
TSSOP
M74HC245B1R
M74HC245M1R
T&R
M74HC245RM13TR
M74HC245TTR
disable the device so that the buses are effectively
isolated.
All inputs are equipped with protection circuits
against static discharge and transient excess
voltage.
All floating bus terminals during High Z State must
be held HIGH or LOW.
Obsolete ProduPIN CONNECTION AND IEC LOGIC SYMBOLS
July 2001
1/10
1 page  
TEST CIRCUIT
M74HC245
uct(s)TEST
rodtPLH, tPHL
PtPZL, tPLZ
tetPZH, tPHZ
leCL = 50pF/150pF or equivalent (includes jig and probe capacitance)
R1 = 1KΩ or equivalent
oRT = ZOUT of pulse generator (typically 50Ω)
Obsolete Product(s) - ObsWAVEFORM 1: PROPAGATION DELAY TIME (f=1MHz; 50% duty cycle)
SWITCH
Open
VCC
GND
5/10
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet M74HC245.PDF ] | |
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