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74LCX245MTR PDF даташит

Спецификация 74LCX245MTR изготовлена ​​​​«ST Microelectronics» и имеет функцию, называемую «LOW VOLTAGE CMOS OCTAL BUS TRANSCEIVER (3-STATE) WITH 5V TOLERANT INPUTS AND OUTPUTS».

Детали детали

Номер произв 74LCX245MTR
Описание LOW VOLTAGE CMOS OCTAL BUS TRANSCEIVER (3-STATE) WITH 5V TOLERANT INPUTS AND OUTPUTS
Производители ST Microelectronics
логотип ST Microelectronics логотип 

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74LCX245MTR Даташит, Описание, Даташиты
74LCX245
LOW VOLTAGE CMOS OCTAL BUS TRANSCEIVER
(3-STATE) WITH 5V TOLERANT INPUTS AND OUTPUTS
s 5V TOLERANT INPUTS AND OUTPUTS
s HIGH SPEED:
tPD = 7.0 ns (MAX.) at VCC = 3V
s POWER DOWN PROTECTION ON INPUTS
AND OUTPUTS
s SYMMETRICAL OUTPUT IMPEDANCE:
|IOH| = IOL = 24mA (MIN) at VCC = 3V
s PCI BUS LEVELS GUARANTEED AT 24 mA
s BALANCED PROPAGATION DELAYS:
tPLH tPHL
s OPERATING VOLTAGE RANGE:
VCC(OPR) = 2.0V to 3.6V (1.5V Data
Retention)
s PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 245
s LATCH-UP PERFORMANCE EXCEEDS
500mA (JESD 17)
s ESD PERFORMANCE:
HBM > 2000V (MIL STD 883 method 3015);
MM > 200V
DESCRIPTION
The 74LCX245 is a low voltage CMOS OCTAL
BUS TRANSCEIVER (3-STATE) fabricated with
sub-micron silicon gate and double-layer metal
wiring C2MOS technology. It is ideal for low power
and high speed 3.3V applications; it can be
interfaced to 5V signal environment for both inputs
and outputs.
SOP
TSSOP
Table 1: Order Codes
PACKAGE
SOP
TSSOP
T&R
74LCX245MTR
74LCX245TTR
It has same speed performance at 3.3V than 5V
AC/ACT family, combined with a lower power
consumption.
This IC is intended for two way asynchronous
communication between data buses; the direction
of data transmission is determined by DIR input.
The enable input G can be used to disable the
device so that the buses are effectively isolated.
All inputs and outputs are equipped with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.
All floating bus terminals during High Z state must
be held HIGH or LOW.
Figure 1: Pin Connection And IEC Logic Symbols
September 2004
Rev. 4
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74LCX245MTR Даташит, Описание, Даташиты
74LCX245
Figure 2: Input And Output Equivalent Circuit
Table 2: Pin Description
PIN N°
1
2, 3, 4, 5, 6, 7, 8, 9
18, 17, 16, 15, 14, 13, 12, 11
19
10
20
Table 3: Truth Table
INPUTS
G
L
L
H
X : Don’t Care
Z : High Impedance
DIR
L
H
X
SYMBOL
DIR
A1 to A8
B1 to B8
G
GND
VCC
NAME AND FUNCTION
Directional Control
Data Inputs/Outputs
Data Inputs/Outputs
Output Enable Input
Ground (0V)
Positive Supply Voltage
FUNCTION
A BUS
OUTPUT
INPUT
Z
B BUS
INPUT
OUTPUT
Z
OUTPUT
A=B
B=A
Z
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74LCX245MTR Даташит, Описание, Даташиты
74LCX245
Table 4: Absolute Maximum Ratings
Symbol
VCC
VI
VO
VO
IIK
IOK
IO
ICC
IGND
Tstg
TL
Parameter
Supply Voltage
DC Input Voltage
DC Output Voltage (OFF State)
DC Output Voltage (High or Low State) (note 1)
DC Input Diode Current
DC Output Diode Current (note 2)
DC Output Current
DC Supply Current per Supply Pin
DC Ground Current per Supply Pin
Storage Temperature
Lead Temperature (10 sec)
Value
-0.5 to +7.0
-0.5 to +7.0
-0.5 to +7.0
-0.5 to VCC + 0.5
- 50
- 50
± 50
± 100
± 100
-65 to +150
300
Unit
V
V
V
V
mA
mA
mA
mA
mA
°C
°C
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied
1) IO absolute maximum rating must be observed
2) VO < GND
Table 5: Recommended Operating Conditions
Symbol
VCC
VI
VO
VO
IOH, IOL
IOH, IOL
Top
dt/dv
Parameter
Supply Voltage (note 1)
Input Voltage
Output Voltage (OFF State)
Output Voltage (High or Low State)
High or Low Level Output Current (VCC = 3.0 to 3.6V)
High or Low Level Output Current (VCC = 2.7V)
Operating Temperature
Input Rise and Fall Time (note 2)
1) Truth Table guaranteed: 1.5V to 3.6V
2) VIN from 0.8V to 2V at VCC = 3.0V
Value
2.0 to 3.6
0 to 5.5
0 to 5.5
0 to VCC
± 24
± 12
-55 to 125
0 to 10
Unit
V
V
V
V
mA
mA
°C
ns/V
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ST Microelectronics

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