74LCX374FT
CMOS Digital Integrated Circuits Silicon Monolithic
74LCX374FT
1. Functional Description
•
Low-Voltage Octal D-Type Flip-Flop with 5-V Tolerant Inputs and Outputs
2. General
The 74LCX374FT is a high-performance CMOS octal D-type flip-flop. 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.
This 8-bit D-type flip-flop is controlled by a clock input (CK) and an output enable input (OE).
When the OE input is high, the eight outputs are in a high-impedance state.
All inputs are equipped with protection circuits against static discharge.
3. Features
(1)
(2)
(3)
(4)
(5)
Low-voltage operation: V
CC
= 1.65 to 3.6 V
High-speed operation: t
pd
= 8.5 ns (max) (V
CC
= 3.0 to 3.6 V)
Output current: |I
OH
|/I
OL
= 24 mA (min) (V
CC
= 3.0 V)
Power-down protection provided on all inputs and outputs
Pin and function compatible with the 74 series
(74LVC/ALVC/ etc.) 374 type
4. Packaging
TSSOP20B
Start of commercial production
1
2013-10
2014-06-24
Rev.2.0
74LCX374FT
10. Absolute Maximum Ratings (Note)
Characteristics
Supply voltage
Input voltage
Output voltage
Input diode current
Output diode current
Output current
Power dissipation
V
CC
/ground current
Storage temperature
Symbol
V
CC
V
IN
V
OUT
I
IK
I
OK
I
OUT
P
D
I
CC
/I
GND
T
stg
(Note 3)
(Note 1)
(Note 2)
Note
Rating
-0.5 to 6.5
-0.5 to 6.5
-0.5 to 6.5
-0.5 to V
CC
+ 0.5
-50
±50
±50
180
±100
-65 to 150
mA
mA
mA
mW
mA
Unit
V
V
V
Note:
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 1: Output in OFF state.
Note 2: High (H) or Low (L) state. I
OUT
absolute maximum rating must be observed.
Note 3: V
OUT
< GND, V
OUT
> V
CC
11. Operating Ranges (Note)
Characteristics
Supply voltage
Input voltage
Output voltage
Output current
Operating temperature
Input rise and fall times
Symbol
V
CC
(Note 1)
V
IN
V
OUT
I
OH
,I
OL
I
OH
,I
OL
T
opr
dt/dv
(Note 6)
(Note 2)
(Note 3)
(Note 4)
(Note 5)
Note
Rating
1.65 to 3.6
1.5 to 3.6
0 to 5.5
0 to 5.5
0 to V
CC
±24
±12
-40 to 85
0 to 10
ns/V
mA
V
V
Unit
V
The operating ranges must be maintained to ensure the normal operation of the device.
Unused inputs must be tied to either V
CC
or GND.
Note 1: Data retention only.
Note 2: Output in OFF state.
Note 3: High or low state
Note 4: V
CC
= 3.0 to 3.6 V
Note 5: V
CC
= 2.7 to 3.0 V
Note 6: V
IN
=0.8 to 2.0 V , V
CC
= 3.0 V
Note:
4
2014-06-24
Rev.2.0
74LCX374FT
12. Electrical Characteristics
12.1. DC Characteristics (Unless otherwise specified, T
a
= -40 to 85
)
Characteristics
High-level input voltage
Symbol
V
IH
Test Condition
V
CC
(V)
Min
Max
V
CC
×
0.1
0.7
0.8
0.2
0.45
0.7
0.4
0.4
0.55
±5.0
±5.0
10.0
10.0
±10.0
500
µA
µA
µA
µA
V
Unit
V
1.65 to 2.3 V
CC
×
0.9
2.3 to 2.7
2.7 to 3.6
Low-level input voltage
V
IL
1.65 to 2.3
2.3 to 2.7
2.7 to 3.6
High-level output voltage
V
OH
V
IN
= V
IH
or V
IL
I
OH
= -100
µA
I
OH
= -4 mA
I
OH
= -8 mA
I
OH
= -12 mA
I
OH
= -18 mA
I
OH
= -24 mA
Low-level output voltage
V
OL
V
IN
= V
IH
or V
IL
I
OL
= 100
µA
I
OL
= 4 mA
I
OL
= 8 mA
I
OL
= 12 mA
I
OL
= 16 mA
I
OL
= 24 mA
Input leakage current
3-state output OFF-state
leakage current
Power-OFF leakage current
Quiescent supply current
Quiescent supply current
I
IN
I
OZ
I
OFF
I
CC
∆I
CC
V
IN
= 0 to 5.5 V
V
IN
= V
IH
or V
IL
V
OUT
= 0 to 5.5 V
V
IN
/V
OUT
= 5.5 V
V
IN
= V
CC
or GND
V
IN
/V
OUT
= 3.6 to 5.5 V
V
IH
= V
CC
- 0.6 V
(per input)
1.65 to 3.6
1.65
2.3
2.7
3.0
3.0
1.65 to 3.6
1.65
2.3
2.7
3.0
3.0
1.65 to 3.6
1.65 to 3.6
0
1.65 to 3.6
1.65 to 3.6
2.7 to 3.6
1.7
2.0
V
CC
- 0.2
1.05
1.7
2.2
2.4
2.2
5
2014-06-24
Rev.2.0
嵌入式系统
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