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Toshiba Electronic Components Datasheet

TC74LCX245FK Datasheet

Low-Voltage Octal Bus Transceiver

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TC74LCX245F/FK
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74LCX245F, TC74LCX245FK
Low-Voltage Octal Bus Transceiver with 5-V Tolerant Inputs and Outputs
The TC74LCX245 is a high-performance CMOS octal bus transceiver.
Designed for use in 3.3-V systems, it achieves high-speed operation
while maintaining the CMOS low power dissipation.
The device is designed for low-voltage (3.3 V) VCC applications, but it
could be used to interface to 5-V supply environment for both inputs and
outputs.
The direction of data transmission is determined by the level of the
DIR input. The enable input ( OE ) can be used to disable the device so
that the busses are effectively isolated.
All inputs are equipped with protection circuits against static
discharge.
Features (Note)
Low-voltage operation: VCC = 1.65 to 3.6 V
High-speed operation: tpd = 7.0 ns (max) (VCC = 3.0 to 3.6 V)
Ouput current: |IOH|/IOL = 24 mA (min) (VCC = 3.0 V)
Latch-up performance: >±500 mA
Available in JEITA SOP, VSSOP (US)
Bidirectional interface between 5.0 V and 3.3 V signals
Power-down protection provided on all inputs and outputs
Pin and function compatible with the 74 series
(74AC/VHC/HC/F/ALS/LS etc.) 245 type
TC74LCX245F
TC74LCX245FK
Weight
SOP20-P-300-1.27A
VSSOP20-P-0030-0.50
: 0.22 g ( typ.)
: 0.03 g ( typ.)
Note: Do not apply a signal to any bus pins when it is in the output mode. Damage may result.
All floating (high impedance) bus pins must have their input levels fixed by means of pull-up or pull-down resistors.
Note: The Electrical Characteristics of VCC = 1.8 ± 0.15 V is only applicable for products which manufactured
from January 2009 onward.
© 2018
1
Toshiba Electronic Devices & Storage Corporation
Start of commercial production
1994-03
2018-08-02


Toshiba Electronic Components Datasheet

TC74LCX245FK Datasheet

Low-Voltage Octal Bus Transceiver

No Preview Available !

Pin Assignment (top view)
IEC Logic Symbol
TC74LCX245F/FK
DIR 1
A1 2
A2 3
A3 4
A4 5
A5 6
A6 7
A7 8
A8 9
GND 10
Truth Table
Inputs
OE
DIR
L
L
L
H
H
X
X: Don’t care
Z: High impedance
20 VCC
19
18 B1
17 B2
16 B3
15 B4
14 B5
13 B6
12 B7
11 B8
19
DIR 1
2
A1
A2 3
A3 4
A4 5
A5 6
A6 7
A7 8
A8 9
G3
3EN1 (BA)
3EN2 (AB)
1
2
18
B1
17 B2
16 B3
15 B4
14 B5
13 B6
12 B7
11 B8
Outputs
A=B
B=A
Z
Function
A-Bus
B-Bus
Output
Input
Input
Output
Z
© 2018
2
Toshiba Electronic Devices & Storage Corporation
2018-08-02


Part Number TC74LCX245FK
Description Low-Voltage Octal Bus Transceiver
Maker Toshiba Semiconductor
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TC74LCX245FK Datasheet PDF






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