TOSHIBA TC74HCT373AP

TC74HCT373AP/AF
TOSHIBA CMOS Digital Integrated Circuit
Silicon Monolithic
TC74HCT373AP,TC74HCT373AF
Octal D-Type Latch with 3-State Output
The TC74HCT373A is a high speed CMOS OCTAL LATCH
with 3-STATE OUTPUT fabricated with silicon gate C2MOS
technology.
It achieves the high speed operation similar to equivalent
LSTTL while maintaining the CMOS low power dissipation.
Their inputs are compatible with TTL, NMOS, and CMOS
output voltage levels.
These 8-bit D-type latches are controlled by a latch enable
input (LE) 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 or transient excess voltage.
TC74HCT373AP
TC74HCT373AF
Features
•
High speed: tpd = 17 ns (typ.) at VCC = 5 V
•
Low power dissipation: ICC = 4 μA (max) at Ta = 25°C
•
Compatible with TTL outputs: VIH = 2 V (min)
•
Wide interfacing ability: LSTTL, NMOS, CMOS
•
Output drive capability: 15 LSTTL loads
•
•
Symmetrical output impedance: |IOH| = IOL = 6 mA (min)
∼ tpHL
Balanced propagation delays: tpLH −
•
Pin and function compatible with 74LS373
VIL = 0.8 V (max)
Weight
DIP20-P-300-2.54A
SOP20-P-300-1.27A
: 1.30 g (typ.)
: 0.22 g (typ.)
Pin Assignment
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TC74HCT373AP/AF
IEC Logic Symbol
Truth Table
Inputs
Output
OE
LE
D
Q
H
X
X
Z
L
L
X
Qn
L
H
L
L
L
H
H
H
X: Don’t care
Z: High impedance
Qn: Q outputs are latched at the time when the LE input is taken to a low logic level.
System Diagram
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Absolute Maximum Ratings (Note 1)
Characteristics
Symbol
Rating
Unit
Supply voltage range
VCC
−0.5~7
V
DC input voltage
VIN
−0.5~VCC + 0.5
V
VOUT
−0.5~VCC + 0.5
V
Input diode current
IIK
±20
mA
Output diode current
IOK
±20
mA
DC output current
IOUT
±35
mA
DC VCC/ground current
ICC
±75
mA
Power dissipation
PD
500 (DIP) (Note 2)/180 (SOP)
mW
Storage temperature
Tstg
−65~150
°C
DC output voltage
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: 500 mW in the range of Ta = −40~65°C. From Ta = 65 to 85°C a derating factor of −10 mW/°C shall be
applied until 300 mW.
Operating Ranges (Note)
Characteristics
Symbol
Rating
Unit
Supply voltage
VCC
4.5~5.5
V
Input voltage
VIN
0~VCC
V
VOUT
0~VCC
V
Operating temperature
Topr
−40~85
°C
Input rise and fall time
tr, tf
0~500
ns
Output voltage
Note:
The operating ranges must be maintained to ensure the normal operation of the device.
Unused inputs must be tied to either VCC or GND.
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Electrical Characteristics
DC Characteristics
Ta = 25°C
Test Condition
Characteristics
Symbol
Ta = −40~85°C
VCC
(V)
Min
Typ.
Max
Min
Max
Unit
High-level input
voltage
VIH
⎯
4.5~
5.5
2.0
⎯
⎯
2.0
⎯
V
Low-level input
voltage
VIL
⎯
4.5~
5.5
⎯
⎯
0.8
⎯
0.8
V
High-level output
voltage
VOH
VIN
= VIH
IOH = −20 μA
4.5
4.4
4.5
⎯
4.4
⎯
IOH = −6 mA
4.5
4.18
4.31
⎯
4.13
⎯
Low-level output
voltage
VOL
VIN
= VIL
IOL = 20 μA
4.5
⎯
0.0
0.1
⎯
0.1
IOL = 6 mA
4.5
⎯
0.17
0.26
⎯
0.33
3-state output
off-state current
IOZ
5.5
⎯
⎯
±0.5
⎯
±5.0
μA
Input leakage
current
IIN
VIN = VCC or GND
5.5
⎯
⎯
±0.1
⎯
±1.0
μA
ICC
VIN = VCC or GND
5.5
⎯
⎯
4.0
⎯
40.0
μA
5.5
⎯
⎯
2.0
⎯
2.9
mA
Ta =
−40
~85°C
Unit
Quiescent supply
current
IC
VIN = VIH or VIL
VOUT = VCC or GND
Per input: VIN = 0.5 V or 2.4 V
Other input: VCC or GND
V
V
Timing Requirements (input: tr = tf = 6 ns)
Characteristics
Minimum pulse width
(LE)
Minimum set-up time
(Dn)
Minimum hold time
(Dn)
Ta = 25°C
Test Condition
Symbol
tW (H)
⎯
ts
⎯
th
⎯
4
VCC (V)
Typ.
Limit
Limit
4.5
⎯
15
19
5.5
⎯
14
17
4.5
⎯
10
13
5.5
⎯
9
12
4.5
⎯
5
5
5.5
⎯
5
5
ns
ns
ns
2007-10-01
TC74HCT373AP/AF
AC Characteristics (CL = 50 pF, input: tr = tf = 6 ns)
Ta = 25°C
Test Condition
Characteristics
Output transition time
Symbol
tTLH
tpLH
(LE-Q)
tpHL
Propagation delay
time
tpLH
(D-Q)
tpHL
Output disable time
Input capacitance
Output capacitance
Power dissipation
capacitance
Note:
⎯
tTHL
Propagation delay
time
Output enable time
CL
(pF)
tpZL
tpZH
tpLZ
tpHZ
50
50
⎯
150
50
⎯
150
50
RL = 1 kΩ
150
RL = 1 kΩ
50
Ta = −40~85°C
VCC
(V)
Min
Typ.
Max
Min
Max
4.5
⎯
7
12
⎯
15
5.5
⎯
6
11
⎯
14
4.5
⎯
19
30
⎯
38
5.5
⎯
16
27
⎯
34
4.5
⎯
24
38
⎯
48
5.5
⎯
22
34
⎯
43
4.5
⎯
20
30
⎯
38
5.5
⎯
18
27
⎯
34
4.5
⎯
25
38
⎯
48
5.5
⎯
22
34
⎯
43
4.5
⎯
19
30
⎯
38
5.5
⎯
16
27
⎯
34
4.5
⎯
24
38
⎯
48
5.5
⎯
22
34
⎯
43
4.5
⎯
20
30
⎯
38
5.5
⎯
18
27
⎯
34
Unit
ns
ns
ns
ns
ns
CIN
⎯
⎯
5
10
⎯
10
pF
COUT
⎯
⎯
10
⎯
⎯
⎯
pF
⎯
⎯
36
⎯
⎯
⎯
pF
CPD
(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:
ICC (opr) = CPD・VCC・fIN + ICC/8 (per latch)
And the total CPD when n pcs. of flip flop operate can be gained by the following equation:
CPD (total) = 19 + 17・n
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Package Dimensions
Weight: 1.30 g (typ.)
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Package Dimensions
Weight: 0.22 g (typ.)
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TC74HCT373AP/AF
RESTRICTIONS ON PRODUCT USE
20070701-EN GENERAL
• The information contained herein is subject to change without notice.
• TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor
devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical
stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of
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such TOSHIBA products could cause loss of human life, bodily injury or damage to property.
In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as
set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and
conditions set forth in the “Handling Guide for Semiconductor Devices,” or “TOSHIBA Semiconductor Reliability
Handbook” etc.
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(computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances,
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