TC74LCX16373AFT
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC74LCX16373AFT
Low-Voltage 16-Bit D-Type Latch with 5-V Tolerant Inputs and Outputs
The TC74LCX16373AFT is a high-performance CMOS 16-bit
D-type latch. 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
but it could be used to interface to 5-V supply environment for
both inputs and outputs.
This 16-bit D-type latch is controlled by a latch enable input
(LE) and an output enable input (
byte. It can be used as two 8-bit latches or one 16-bit latch. When
OE
the
discharge.
input is high, the outputs are in a high-impedance state.
All inputs are equipped with protection circuits against static
OE
) which are common to each
Features
applications,
CC
Weight: 0.25 g (typ.)
• Low-voltage operation: VCC = 2.0 to 3.6 V
• High-speed operation: t
• Ouput current: |I
• Latch-up performance: −500 mA
• Package: TSSOP
• Power-down protection provided on all inputs and outputs
OH
= 7.0 ns (max) (VCC = 3.0 to 3.6 V)
pd
|/IOL = 24 mA (min) (VCC = 3.0 V)
1
2007-10-19
TC74LCX16373AFT
Pin Assignment
1
OE1
2
1Q1
3
1Q2
4
GND
5
1Q3
1Q4
6
V
7
CC
1Q5
8
1Q6
9
GND
10
11
1Q7
1Q8
12
13
2Q1
(top view)
IEC Logic Symbol
1
48
24
25
47
46
44
43
41
40
38
37
36
35
33
32
30
29
27
26
1EN
C3
2EN
C4
3D
4D
47
46
45
44
43
42
41
40
39
38
37
36
1LE 48
1D1
1D2
GND
1D3
1D4
V
CC
1D5
1D6
GND
1D7
1D8
2D1
OE1
1LE
OE2
2LE
1D1
1D2
1D3
1D4
1D5
1D6
1D7
1D8
2D1
2D2
2D3
2D4
2D5
2D6
2D7
2D8
1
2
2
3
5
6
8
9
11
12
13
14
16
17
19
20
22
23
1Q1
1Q2
1Q3
1Q4
1Q5
1Q6
1Q7
1Q8
2Q1
2Q2
2Q3
2Q4
2Q5
2Q6
2Q7
2Q8
14
2Q2
GND
2Q3
2Q4
V
CC
2Q5
2Q6
GND
2Q7
2Q8
OE2
15
16
17
18
19
20
21
22
23
24
35
34
33
32
31
30
29
28
27
26
25
2D2
GND
2D3
2D4
V
CC
2D5
2D6
GND
2D7
2D8
2LE
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2007-10-19
Truth Table
1LE 1D1-1D8 1Q1-1Q8
OE1
H X X Z
L L X Qn
L H L L
L H H H
2LE 2D1-2D8 2Q1-2Q8
OE2
H X X Z
L L X Qn
L H L L
L H H H
X: Don’t care
Z: High impedance
TC74LCX16373AFT
Inputs Outputs
Inputs Outputs
Qn: Q outputs are latched at the time when the LE input is taken to a low logic level
System Diagram
1LE
OE1
2LE
48
1
25
47
36
1D1
2D1
1D2
46 44 43 41 40 38 37
D
LE
Q
2
1Q1
2D2
35 33 32 30 29 27 26
D
LE
Q
D
LE
D
LE
Q
Q
3
1Q2
1D3
2D3
D
LE
D
LE
Q
Q
5
1Q3
1D4
2D4
LE
LE
1D5
D
Q
6
1Q4
2D5
D
Q
LE
LE
1D6
D
LE
Q
8
1Q5
2D6
D
LE
Q
1D7
D
Q
9
1Q6
2D7
D
Q
LE
LE
1D8
D
D
Q
11
Q
1Q7
2D8
D
LE
D
LE
Q
12
1Q8
Q
24
OE2
13
2Q1
14
2Q2
16
2Q3
17
2Q4
19
2Q5
20
2Q6
22
2Q7
23
2Q8
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2007-10-19
Absolute Maximum Ratings (Note 1)
Characteristics Symbol Rating Unit
TC74LCX16373AFT
Power supply voltage V
Input voltage V
Output voltage V
Input diode current I
Output diode current I
DC output current I
Power dissipation P
DC VCC/ground current per supply pin ICC/I
Storage temperature T
CC
IN
OUT
IK
OK
OUT
D
GND
stg
−0.5 to 7.0 (Note 2)
−0.5 to V
(Note 3)
±50 (Note 4) mA
−0.5 to 7.0 V
−0.5 to 7.0 V
+ 0.5
CC
−50 mA
±50 mA
400 mW
±100 mA
−65 to 150 °C
V
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
Note 4: V
< GND, V
OUT
absolute maximum rating must be observed.
OUT
> VCC
OUT
Operating Ranges (Note 1)
Characteristics Symbol Rating Unit
Power supply voltage V
Input voltage V
Output voltage V
Output current IOH/IOL
Operating temperature T
Input rise and fall time dt/dv 0 to 10 (Note 7) ns/V
CC
IN
OUT
opr
1.5 to 3.6 (Note 2)
0 to 5.5 (Note 3)
0 to VCC (Note 4)
±24 (Note 5)
Note 1: The operating ranges must be maintained to ensure the normal operation of the device.
Unused inputs must be tied to either VCC or GND.
Note 2: Data retention only
2.0 to 3.6
0 to 5.5 V
±12 (Note 6)
−40 to 85 °C
V
V
mA
Note 3: Output in OFF state
Note 4: High or low state
Note 5: V
= 3.0 to 3.6 V
CC
Note 6: VCC = 2.7 to 3.0 V
Note 7: VIN = 0.8 to 2.0 V, VCC = 3.0 V
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2007-10-19
Electrical Characteristics
TC74LCX16373AFT
DC Characteristics
Characteristics Symbol Test Condition
Input voltage
Output voltage
Input leakage current I
3-state output OFF state current IOZ
Power-off leakage current I
Quiescent supply current ICC
Increase in Icc per input ΔICC VIH = VCC − 0.6 V 2.7 to 3.6 ⎯ 500
(Ta = −40 to 85°C)
H-level
L-level V
H-level
L-level VOL VIN = VIH or VIL
VIH ⎯ 2.7 to 3.6 2.0 ⎯
⎯ 2.7 to 3.6 ⎯ 0.8
IL
V
V
OH
IN
VIN/V
OFF
V
CC
IOH = −100 μA 2.7 to 3.6
= VIH or VIL
IN
VIN = 0 to 5.5 V 2.7 to 3.6 ⎯ ±5.0 μA
= VIH or V
V
IN
V
= 0 to 5.5 V
OUT
OUT
VIN = VCC or GND 2.7 to 3.6 ⎯ 20.0
V
IN/VOUT
IL
= 5.5 V 0 ⎯ 10.0 μA
= 3.6 to 5.5 V 2.7 to 3.6 ⎯ ±20.0
IOH = −12 mA 2.7 2.2 ⎯
IOH = −18 mA 3.0 2.4 ⎯
= −24 mA 3.0 2.2 ⎯
I
OH
IOL = 100 μA 2.7 to 3.6 ⎯ 0.2
IOL = 12 mA 2.7 ⎯ 0.4
IOL = 16 mA 3.0 ⎯ 0.4
= 24 mA 3.0 ⎯ 0.55
I
OL
2.7 to 3.6
Min Max Unit
(V)
V
CC
− 0.2
⎯ ±5.0 μA
V
⎯
V
μA
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2007-10-19
TC74LCX16373AFT
AC Characteristics
Characteristics Symbol Test Condition
(D-Q)
(LE-Q)
3-state output enable time
3-state output disable time
(LE)
Minimum setup time ts Figure 1, Figure 2
Minimum hold time th Figure 1, Figure 2
Output to output skew
(Ta = −40 to 85°C)
t
pLH
Figure 1, Figure 2
t
pHL
t
pLH
Figure 1, Figure 2
t
pHL
t
pZL
Figure 1, Figure 3
t
pZH
t
pLZ
Figure 1, Figure 3
t
pHZ
t
(H) Figure 1, Figure 2
w
t
osLH
t
osHL
(Note)
V
CC
2.7 ⎯ 8.0 Propagation delay time
3.3
2.7 ⎯ 8.0 Propagation delay time
3.3
2.7 ⎯ 8.2
3.3
2.7 ⎯ 8.2
3.3
2.7 4.0 ⎯ Minimum pulse width
3.3
2.7 2.5 ⎯
3.3
2.7 1.5 ⎯
3.3
2.7 ⎯ ⎯
3.3
Min Max Unit
(V)
± 0.3 1.5 7.0
± 0.3 1.5 7.0
± 0.3 1.5 7.2
± 0.3 1.5 7.2
± 0.3 3.0 ⎯
± 0.3 2.5 ⎯
± 0.3 1.5 ⎯
± 0.3 ⎯ 1.0
ns
ns
ns
ns
ns
ns
ns
ns
Note: Parameter guaranteed by design.
(t
osLH
= |t
pLHm
− t
pLHn
|, t
osHL
= |t
pHLm
− t
pHLn
|)
Dynamic Switching Characteristics
(Ta = 25°C, input: tr = tf = 2.5 ns, CL = 50 pF, RL = 500 Ω)
Characteristics Symbol Test Condition
Quiet output maximum
dynamic V
Quiet output minimum
dynamic V
OL
OL
|V
V
VIH = 3.3 V, VIL = 0 V 3.3 0.8 V
OLP
| VIH = 3.3 V, VIL = 0 V 3.3 0.8 V
OLV
Capacitive Characteristics
Characteristics Symbol Test Condition
Input capacitance
Output capacitance
Power dissipation capacitance CPD fIN = 10 MHz (Note) 3.3 25 pF
(Ta = 25°C)
CIN ⎯ 3.3 7 pF
C
⎯ 3.3 8 pF
OUT
Note: CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating
current consumption without load.
Average operating current can be obtained by the equation:
I
CC (opr)
= CPD･VCC･f
+ ICC/16 (per bit)
IN
(V)
(V)
Typ. Unit
Typ. Unit
V
CC
V
CC
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2007-10-19
AC Test Circuit
Output Measure
AC Waveform
Open
Switch
L
C
tf 2.5 ns tr 2.5 ns
6.0 V
GND
R
L
R
L
C
L
R
L
= 50 pF
= 500 Ω
Figure 1
TC74LCX16373AFT
Parameter Switch
t
, t
pLH
t
pLZ
t
pHZ
tw, ts, th, Open
Open
pHL
, t
pZL
, t
GND
pZH
6.0 V
Input
(LE)
Input
(D)
Output
(Q)
tr 2.5 ns
10%
90%
1.5 V
10%
tf 2.5 ns
90%
1.5 V
(H) th (H)
t
s
1.5 V
t
t
pLH
pHL
Figure 2 t
1.5 V
tw (H)
1.5 V
th (L)ts (L)
1.5 V
t
pLH
, t
, tw, ts, th
pHL
t
pHL
pLH
2.7 V
GND
2.7 V
GND
V
OH
V
OL
tr 2.5 ns tf 2.5 ns
Output Enable
OE )
(
Output (Q)
Low to Off to Low
t
pLZ
t
pHZ
90%
1.5 V
VOL
+ 0.3 V
10%
t
t
pZL
1.5 V
pZH
2.7 V
GND
3.0 V
VOL
V
Output (Q)
High to Off to High
Outputs
enabled
Figure 3 t
VOH − 0.3 V
, t
pLZ
Outputs
disabled
pHZ
, t
pZL
, t
pZH
1.5 V
Outputs
enabled
OH
GND
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2007-10-19
Package Dimensions
TC74LCX16373AFT
Weight: 0.25 g (typ.)
8
2007-10-19
TC74LCX16373AFT
RESTRICTIONS ON PRODUCT USE
• Toshiba Corporation, and its subsidiaries and affiliates (collectively “TOSHIBA”), reserve the right to make changes to the information
in this document, and related hardware, software and systems (collectively “Product”) without notice.
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TOSHIBA’s written permission, reproduction is permissible only if reproduction is without alteration/omission.
• Though TOSHIBA works continually to improve Product’s quality and reliability, Product can malfunction or fail. Customers are
responsible for complying with safety standards and for providing adequate designs and safeguards for their hardware, software and
systems which minimize risk and avoid situations in which a malfunction or failure of Product could cause loss of human life, bodily
injury or damage to property, including data loss or corruption. Before creating and producing designs and using, customers must
also refer to and comply with (a) the latest versions of all relevant TOSHIBA information, including without limitation, this document,
the specifications, the data sheets and application notes for Product and the precautions and conditions set forth in the “TOSHIBA
Semiconductor Reliability Handbook” and (b) the instructions for the application that Product will be used with or for. Customers are
solely responsible for all aspects of their own product design or applications, including but not limited to (a) determining the
appropriateness of the use of this Product in such design or applications; (b) evaluating and determining the applicability of any
information contained in this document, or in charts, diagrams, programs, algorithms, sample application circuits, or any other
referenced documents; and (c) validating all operating parameters for such designs and applications.
LIABILITY FOR CUSTOMERS’ PRODUCT DESIGN OR APPLICATIONS.
• Product is intended for use in general electronics applications (e.g., computers, personal equipment, office equipment, measuring
equipment, industrial robots and home electronics appliances) or for specific applications as expressly stated in this document.
Product is neither intended nor warranted for use in equipment or systems that require extraordinarily high levels of quality and/or
reliability and/or a malfunction or failure of which may cause loss of human life, bodily injury, serious property damage or serious
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WHATSOEVER, INCLUDING WITHOUT LIMITATION, INDIRECT, CONSEQUENTIAL, SPECIAL, OR INCIDENTAL DAMAGES OR
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technology products (mass destruction weapons). Product and related software and technology may be controlled under the
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noncompliance with applicable laws and regulations.
TOSHIBA ASSUMES NO
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2007-10-19
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