TC74VCX16834FT
TOSHIBA CMOS Digital Integrated Circuit
Silicon Monolithic
TC74VCX16834FT
Low-Voltage 18-Bit Universal Bus Driver with 3.6-V Tolerant Inputs and Outputs
The TC74VCX16834FT is a high-performance CMOS 18-bit
universal bus driver. Designed for use in 1.8-V, 2.5-V or 3.3-V
systems, it achieves high-speed operation while maintaining the
CMOS low power dissipation.
It is also designed with overvoltage tolerant inputs and outputs
up to 3.6 V.
Data flow from A to Y is controlled by the output-enable (OE)
input. The device operates in the transparent mode when the
latch-enable (LE) input is low.
When LE is high, the A data is latched if the clock (CK) input
Weight: 0.25 g (typ.)
is held at a high or low logic level. If LE is high, the A data is
stored in the latch/flip-flop on the low-to-high transition of CK.
When OE is high, the outputs are in the high-impedance state.
All inputs are equipped with protection circuits against static discharge.
Features
•
•
Low-voltage operation: V
CC
= 1.8 to 3.6 V
High-speed operation: t
pd
= 3.3 ns (max) (V
CC
= 3.0 to 3.6 V)
: t
pd
= 4.2 ns (max) (V
CC
= 2.3 to 2.7 V)
: t
pd
= 8.4 ns (max) (V
CC
= 1.8 V)
•
Output current : I
OH
/I
OL
= ±24 mA (min) (V
CC
= 3.0 V)
: I
OH
/I
OL
= ±18 mA (min) (V
CC
= 2.3 V)
: I
OH
/I
OL
= ±6 mA (min) (V
CC
= 1.8 V)
•
•
•
•
Latch-up performance:
−300
mA
ESD performance: Machine model
≥ ±200
V
Human body model
≥ ±2000
V
Package: TSSOP
3.6-V tolerant function and power down protection provided on all inputs and outputs
Start of commercial production
1998-08
1
2014-03-01
TC74VCX16834FT
Pin Assignment
(top view)
IEC Logic Symbol
OE
27
30
28
NC
NC
Y1
GND
Y2
Y3
V
CC
Y4
Y5
1
2
3
4
5
6
7
8
9
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
GND
NC
A1
GND
A2
A3
V
CC
A4
A5
A6
GND
A7
A8
A9
A10
A11
A12
GND
A13
A14
A15
V
CC
A16
A17
GND
A18
CK
GND
EN1
2C3
C3
G2
CK
LE
Y1
Y2
Y3
Y4
Y5
Y6
Y7
Y8
Y9
Y10
Y11
Y12
Y13
Y14
Y15
Y16
Y17
Y18
3
5
6
8
9
10
12
13
14
15
16
17
19
20
21
23
24
26
1
1
3D
54
52
51
49
48
47
45
44
43
42
41
40
38
37
36
34
33
31
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
Y6 10
GND 11
Y7 12
Y8 13
Y9 14
Y10 15
Y11 16
Y12 17
GND 18
Y13 19
Y14 20
Y15 21
V
CC
22
Y16 23
Y17 24
GND 25
Y18 26
OE
27
28
LE
2
2014-03-01
TC74VCX16834FT
Truth Table
Inputs
OE
H
L
L
L
L
L
L
LE
X
L
L
H
H
H
H
CK
X
X
X
A
X
L
H
L
H
Outputs
Y
Z
L
H
L
H
Y0
(Note)
Y0
(Note)
H
L
X
X
X: Don’t care
Z: High impedance
Note:
Output level before the indicated steady-state input conditions were established, provided that CK was high
or low before
LE went high.
System Diagram
OE
CK
LE
27
30
28
LE
A1
54
D
LE
D
3
Y1
To 17 other channels
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2014-03-01
TC74VCX16834FT
Absolute Maximum Ratings (Note 1)
Characteristics
Power supply voltage
DC input voltage
DC output voltage
Input diode current
Output diode current
DC output current
Power dissipation
DC V
CC
/ground current per supply pin
Storage temperature
Symbol
V
CC
V
IN
V
OUT
I
IK
I
OK
I
OUT
P
D
I
CC
/I
GND
T
stg
Rating
−
0.5 to 4.6
−
0.5 to 4.6
−
0.5 to 4.6 (Note 2)
−
0.5 to V
CC
+
0.5
(Note 3)
−
50
±
50
±
50
Unit
V
V
V
mA
(Note 4)
mA
mA
mW
mA
°C
400
±
100
−
65 to 150
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: 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
Power supply voltage
Input voltage
Output voltage
Symbol
V
CC
V
IN
V
OUT
Rating
1.8 to 3.6
1.2 to 3.6 (Note 2)
−
0.3 to 3.6
Unit
V
V
V
0 to 3.6 (Note 3)
0 to V
CC
(Note 4)
±
24
(Note 5)
(Note 6)
(Note 7)
°C
(Note 8)
ns/V
mA
Output current
I
OH
/I
OL
T
opr
dt/dv
±
18
±
6
Operating temperature
Input rise and fall time
−
40 to 85
0 to 10
Note 1: 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 2: Data retention only
Note 3: OFF state
Note 4: High or low state
Note 5: V
CC
=
3.0 to 3.6 V
Note 6: V
CC
=
2.3 to 2.7 V
Note 7: V
CC
=
1.8 V
Note 8: V
IN
=
0.8 to 2.0 V, V
CC
=
3.0 V
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2014-03-01
TC74VCX16834FT
Electrical Characteristics
DC Characteristics
(Ta
= −40
to 85°C, 2.7 V
<
V
CC
≤
3.6 V)
Characteristics
H-level
L-level
Symbol
V
IH
V
IL
Test Condition
⎯
⎯
V
CC
(V)
2.7 to 3.6
2.7 to 3.6
Min
2.0
⎯
Max
⎯
Unit
Input voltage
0.8
⎯
⎯
⎯
⎯
V
I
OH
= −
100
μ
A
H-level
V
OH
V
IN
=
V
IH
or V
IL
I
OH
= −
12 mA
I
OH
= −
18 mA
Output voltage
I
OH
= −
24 mA
I
OL
=
100
μ
A
L-level
V
OL
V
IN
=
V
IH
or V
IL
I
OL
=
12 mA
I
OL
=
18 mA
I
OL
=
24 mA
Input leakage current
3-state output OFF state current
Power-off leakage current
Quiescent supply current
Increase in I
CC
per input
I
IN
I
OZ
I
OFF
I
CC
Δ
I
CC
2.7 to 3.6
2.7
3.0
3.0
2.7 to 3.6
2.7
3.0
3.0
2.7 to 3.6
2.7 to 3.6
0
2.7 to 3.6
2.7 to 3.6
2.7 to 3.6
V
CC
−
0.2
2.2
2.4
2.2
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
V
0.2
0.4
0.4
0.55
±
5.0
±
10.0
μ
A
μ
A
μ
A
V
IN
=
0 to 3.6 V
V
IN
=
V
IH
or V
IL
V
OUT
=
0 to 3.6 V
V
IN
, V
OUT
=
0 to 3.6 V
V
IN
=
V
CC
or GND
V
CC
≤
(V
IN
, V
OUT
)
≤
3.6 V
V
IH
=
V
CC
−
0.6 V
10.0
20.0
±
20.0
μ
A
750
DC Characteristics
(Ta
= −40
to 85°C, 2.3 V
≤
V
CC
≤
2.7 V)
Characteristics
H-level
L-level
Symbol
V
IH
V
IL
Test Condition
⎯
⎯
V
CC
(V)
2.3 to 2.7
2.3 to 2.7
Min
1.6
⎯
Max
⎯
Unit
Input voltage
0.7
⎯
⎯
⎯
⎯
V
I
OH
= −
100
μ
A
H-level
Output voltage
V
OH
V
IN
=
V
IH
or V
IL
I
OH
= −
6 mA
I
OH
= −
12 mA
I
OH
= −
18 mA
I
OL
=
100
μ
A
L-level
V
OL
V
IN
=
V
IH
or V
IL
I
OL
=
12 mA
I
OL
=
18 mA
Input leakage current
3-state output OFF state current
Power-off leakage current
Quiescent supply current
I
IN
I
OZ
I
OFF
I
CC
V
IN
=
0 to 3.6 V
V
IN
=
V
IH
or V
IL
V
OUT
=
0 to 3.6 V
V
IN
, V
OUT
=
0 to 3.6 V
V
IN
=
V
CC
or GND
V
CC
≤
(V
IN
, V
OUT
)
≤
3.6 V
2.3 to 2.7
2.3
2.3
2.3
2.3 to 2.7
2.3
2.3
2.3 to 2.7
2.3 to 2.7
0
2.3 to 2.7
2.3 to 2.7
V
CC
−
0.2
2.0
1.8
1.7
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
V
0.2
0.4
0.6
±
5.0
±
10.0
μ
A
μ
A
μ
A
μ
A
10.0
20.0
±
20.0
5
2014-03-01
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