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TC74LCX245F(EL,K,F

P1-P3P4-P6P7-P9P10-P12
TC74LCX245F/FT/FK
2014-03-01
1
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74LCX245F, TC74LCX245FT, 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) V
CC
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: V
CC
= 1.65 to 3.6 V
• High-speed operation: t
pd
= 7.0 ns (max) (V
CC
= 3.0 to 3.6 V)
• Ouput current: |I
OH
|/I
OL
= 24 mA (min) (V
CC
= 3.0 V)
• Latch-up performance: ＞±500 mA
• Available in JEITA SOP, TSSOP and 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
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.
Weight
SOP20-P-300-1.27A : 0.22g (typ.)
TSSOP20-P-0044-0.65A : 0.08 g (typ.)
VSSOP20-P-0030-0.50 : 0.03 g (typ.)
Note: The Electrical Characteristics of V
CC
=1.8±0.15V is only applicable for products which manufactured
from January 2009 onward.
TC74LCX245F
TC74LCX245FT
TC74LCX245FK
Start of commercial production
1994-03
TC74LCX245F/FT/FK
2014-03-01
2
Pin Assignment
(top view)
IEC Logic Symbol
Truth Table
Inputs Function
OE
DIR
Outputs
A-Bus B-Bus
L L A = B Output Input
L H B = A Input Output
H X Z Z
X: Don’t care
Z: High impedance
V
CC
20
OE
B1
B2
B3
B4
19
18
17
16
15
14
DIR 1
2
3
4
5
6
7
A1
A2
A3
A4
A5
A6
B5
8
9
10
A7
A8
GND
13
12
11
B6
B7
B8
1
19
2
OE
1A1
3EN1 (BA)
G3
DIR
3EN2 (AB)
3
A2
4
A3
5
A4
6
A5
7
A6
8
A7
9
A8
2
18
17
16
15
14
13
12
11
B2
B3
B4
B5
B6
B7
B8
B1
TC74LCX245F/FT/FK
2014-03-01
3
Absolute Maximum Ratings (Note 1)
Characteristics Symbol Rating Unit
Power supply voltage V
CC
−0.5 to 7.0 V
DC input voltage
(DIR,
OE
)
V
IN
−0.5 to 7.0 V
−0.5 to 7.0 (Note 2)
DC bus I/O voltage V
I/O
−0.5 to V
CC
+ 0.5
(Note 3)
V
Input diode current I
IK
−50 mA
Output diode current I
OK
±50 (Note 4) mA
DC output current I
OUT
±50 mA
Power dissipation P
D
180 mW
DC V
CC
/ground current I
CC
/I
GND
±100 mA
Storage temperature T
stg
−65 to 150 °C
Note 1: Exceeding any of the absolute maximum ratings, even briefly, lead to deterioration in IC performance or
even destruction.
Using continuously under heavy loads (e.g. the application of high temperature/current/voltage and the
significant change in temperature, etc.) may cause this product to decrease in the reliability significantly
even if the operating conditions (i.e. operating temperature/current/voltage, etc.) are within the absolute
maximum ratings and the operating ranges.
Please design the appropriate reliability upon reviewing the Toshiba Semiconductor Reliability Handbook
(“Handling Precautions”/“Derating Concept and Methods”) and individual reliability data (i.e. reliability test
report and estimated failure rate, etc).
Note 2: Output in OFF state
Note 3: High or low state. I
OUT
absolute maximum rating must be observed.
Note 4: V
OUT
< GND, V
OUT
> V
CC
Operating Ranges
(Note 1)
Characteristics Symbol Rating Unit
1.65 to 3.6
Power supply voltage V
CC
1.5 to 3.6 (Note 2)
V
Input voltage
(DIR,
OE )
V
IN
0 to 5.5 V
0 to 5.5 (Note 3)
Bus I/O voltage V
I/O
0 to V
CC
(Note 4)
V
±24 (Note 5)
Output current I
OH
/I
OL
±12 (Note 6)
mA
Operating temperature T
opr
−40 to 85 °C
Input rise and fall time dt/dv 0 to 10 (Note 7) ns/V
Note 1: The operating ranges are required to ensure the normal operation of the device. Unused inputs and bus
inputs must be tied to either V
CC
or GND. Please connect both bus inputs and the bus outputs with V
CC
or
GND when the I/O of the bus terminal changes by the function. In this case, please note that the output is
not short-circuited.
Note 2: Data retention only
Note 3: Output in OFF state
Note 4: High or low state
Note 5: V
CC
= 3.0 to 3.6 V
Note 6: V
CC
= 2.7 to 3.0 V
Note 7: V
IN
= 0.8 to 2.0 V, V
CC
= 3.0 V
P1-P3P4-P6P7-P9P10-P12

TC74LCX245F(EL,K,F

Mfr. #:
Buy TC74LCX245F(EL,K,F
Manufacturer:
Toshiba
Description:
Bus Transceivers CMOS Logic IC 7.0ns 24mA 1.65 to 3.6V
Lifecycle:
New from this manufacturer.
Delivery:
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