STMICROELECTRONICS 74VHCT14AMTR

74VHCT14A
HEX SCHMITT inverter
Features
■
High speed: tPD = 5.5ns (typ.) at VCC = 5V
■
Low power dissipation:
ICC = 2 µA (Max.) at TA = 25°C
■
Typical hysteresis: Vh = 0.7V at VCC = 4.5V
■
Power down protection on inputs & outputs
■
Symmetrical output impedance:
|IOH| = IOL = 8 mA (Min)
■
Balanced propagation delays:
tPLH ≅ tPHL
■
Operating voltage range:
VCC(Opr) = 4.5V to 5.5V
■
Pin and function compatible with
74 series 14
■
Improved latch-up immunity
■
Low noise: VOLP = 0.8V (Max.)
SO-14
TSSOP14
Description
Pin configuration and function are the same as
those of the 74VHC04 but the 74VHC14 has
hysteresis.
The 74VHCT14A is an advanced high-speed
CMOS HEX SCHMITT inverter fabricated with
sub-micron silicon gate and double-layer metal
wiring C2MOS technology.
The internal circuit is composed of 3 stages
including buffer output, which provides high noise
immunity and stable output.
Power down protection is provided on all inputs
and outputs and 0 to 7V can be accepted on
inputs with no regard to the supply voltage. This
device can be used to interface 5V to 3V since all
inputs are equipped with TTL threshold.
This together with its schmitt trigger function
allows it to be used on line receivers with slow
rise/fall input signals.
All inputs and outputs are equipped with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.
Table 1. Device summary
May 2007
Part number
Package
Packaging
74VHCT14AMTR
SO-14
Tape and reel
74VHCT14ATTR
TSSOP14
Tape and reel
Rev 2
1/15
www.st.com
15
Contents
74VHCT14A
Contents
1
Logic symbols and I/O equivalent circuit . . . . . . . . . . . . . . . . . . . . . . . . 3
2
Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3
2.1
Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.3
Truth table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.1
Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5
Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
6
Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
7
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
8
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2/15
74VHCT14A
1
Logic symbols and I/O equivalent circuit
Logic symbols and I/O equivalent circuit
Figure 1.
IEC logic symbols
Figure 2.
Input and output equivalent circuit
3/15
Pin settings
74VHCT14A
2
Pin settings
2.1
Pin connection
Figure 3.
2.2
Pin connection (top through view)
Pin description
Table 2. Pin description
2.3
Pin N°
Symbol
Name and function
1, 3, 5, 9, 11, 13
1A to 6A
Data inputs
2, 4, 6, 8, 10, 12
1Y to 6Y
Data outputs
7
GND
Ground (0V)
14
VCC
Positive supply voltage
Truth table
Table 3. Truth table
4/15
Inputs
Output
A
Y
L
H
H
L
74VHCT14A
3
Maximum rating
Maximum rating
stressing the device above the rating listed in the “absolute maximum ratings” table may
cause permanent damage to the device. these are stress ratings only and operation of the
device at these or any other conditions above those indicated in the operating sections of
this specification is not implied. exposure to absolute maximum rating conditions for
extended periods may affect device reliability. refer also to the STMicroelectronics sure
program and other relevant quality documents.
Table 4. Absolute maximum ratings
Symbol
VCC
VI
Parameter
Supply voltage
DC input voltage
(1)
Value
Unit
-0.5 to +7.0
V
-0.5 to +7.0
V
-0.5 to +7.0
V
-0.5 to VCC + 0.5
V
VO
DC output voltage
VO
DC output voltage (2)
IIK
DC input diode current
- 20
mA
IOK
DC output diode current
± 20
mA
IO
DC output current
± 25
mA
ICC
DC supply current per supply pin
± 50
mA
IGND
DC ground current per supply pin
± 50
mA
Tstg
Storage temperature
-65 to +150
°C
300
°C
Value
Unit
4.5 to 5.5
V
TL
Lead temperature (10 sec)
1. VCC = 0V
2. High or low state
3.1
Recommended operating conditions
Table 5. Recommended operating conditions
Symbol
VCC
VI
Parameter
Supply voltage
Input voltage
0 to 5.5
V
VO
Output voltage
(1)
0 to 5.5
V
VO
Output voltage (2)
0 to VCC
V
Top
Operating temperature
-55 to 125
°C
1. VCC = 0V
2. High or low state
5/15
Electrical characteristics
4
74VHCT14A
Electrical characteristics
Table 6. DC specifications
Test condition
Symbol
Vt+
Vt-
Vh
Parameter
Value
TA = 25°C
VCC
(V)
Min.
Min.
Max.
Min.
2.0
2.0
2.0
5.5
2.0
2.0
2.0
Low level
threshold voltage
4.5
0.6
0.6
0.6
5.5
0.6
0.6
0.6
Hysteresis voltage
4.5
0.4
1.4
0.4
1.4
0.4
1.4
5.5
0.4
1.5
0.4
1.5
0.4
1.5
IO=-50 µA
4.4
4.5
IO=-8 mA
3.94
Low level output
voltage
4.5
IO=50 µA
4.5
Input leakage
current
ICC
4.5
4.4
3.8
3.7
V
V
V
V
0.1
0.1
0.1
IO=8 mA
0.36
0.44
0.55
0 to
5.5
VI = 5.5V or GND
± 0.1
± 1.0
± 1.0
µA
Quiescent supply
current
5.5
VI = VCC or GND
2
20
20
µA
+ICC
Additional worst
case supply
current
5.5
One Input at 3.4V,
other input at VCC
or GND
1.35
1.5
1.5
mA
IOPD
Output leakage
current
0
VOUT = 5.5V
0.5
5.0
5.0
µA
II
6/15
0.0
4.4
Unit
Max.
4.5
4.5
VOL
Max.
-55 to
125°C
High level
threshold voltage
High level output
voltage
VOH
Typ.
-40 to 85°C
V
74VHCT14A
Electrical characteristics
Table 7. AC electrical characteristics (Input tr = tf = 3ns)
Test condition
Symbol
tPLH
tPHL
1.
Parameter
Propagation delay
time
Value
TA = 25°C
VCC
CL
(1)
(pF)
(V)
Min.
-40 to 85°C
-55 to
125°C
Typ.
Max.
Min.
Max.
Min.
Max.
5.0
15
5.5
7.6
1.0
8.5
1.0
9.5
5.0
50
6.7
8.0
1.0
9.5
1.0
10.5
Unit
ns
Voltage range is 5.0V ± 0.5V
Table 8. Capacitive characteristics
Test condition
Symbol
Value
TA = 25°C
Parameter
Min.
-40 to 85°C
Typ.
Max.
10
CIN
Input capacitance
6
CPD
Power dissipation
capacitance (1)
20
Min.
Max.
-55 to
125°C
Min.
10
Unit
Max.
10
pF
pF
1. CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current
consumption without load. (Refer to Test Circuit). Average operating current can be obtained by the following equation.
ICC(opr) = CPD x VCC x fIN + ICC/6 (per gate)
Table 9. Dynamic switching characteristics
Test condition
Symbol
Parameter
5.0
VIHD
Dynamic high
voltage input (1) (3)
5.0
VILD
Dynamic low
voltage input (1) (3)
5.0
VOLV
TA = 25°C
VCC
(V)
Dynamic low
voltage quiet
output (1) (2)
VOLP
Value
Min.
-40 to 85°C
Typ.
Max.
0.3
0.8
Min.
Max.
-55 to
125°C
Min.
Unit
Max.
V
-0.8
CL = 50 pF
-0.3
2.0
V
0.6
V
1. Worst case package.
2. Max number of outputs defined as (n). Data inputs are driven 0V to 5.0V, (n-1) outputs switching and one output at GND.
3. Max number of data inputs (n) switching. (n-1) switching 0V to 5.0V. Inputs under test switching: 5.0V to threshold (VILD),
0V to threshold (VIHD), f = 1MHz.
7/15
Test circuit
5
74VHCT14A
Test circuit
Figure 4.
Test circuit
CL = 15/50pF or equivalent (includes jig and probe capacitance)
RT = ZOUT of pulse generator (typically 50Ω)
6
Waveforms
Figure 5.
8/15
Waveform - propagation delay (f = 1MHz; 50% duty cycle)
74VHCT14A
7
Package mechanical data
Package mechanical data
In order to meet environmental requirements, ST offers these devices in ECOPACK®
packages. These packages have a Lead-free second level interconnect . The category of
second level interconnect is marked on the package and on the inner box label, in
compliance with JEDEC Standard JESD97. The maximum ratings related to soldering
conditions are also marked on the inner box label. ECOPACK is an ST trademark.
ECOPACK specifications are available at: www.st.com
9/15
Package mechanical data
74VHCT14A
SO-14 MECHANICAL DATA
DIM.
mm.
MIN.
TYP
inch
MAX.
MIN.
TYP.
MAX.
A
1.35
1.75
0.053
0.069
A1
0.1
0.25
0.004
0.010
A2
1.10
1.65
0.043
0.065
B
0.33
0.51
0.013
0.020
C
0.19
0.25
0.007
0.010
D
8.55
8.75
0.337
0.344
E
3.8
4.0
0.150
0.157
e
1.27
0.050
H
5.8
6.2
0.228
0.244
h
0.25
0.50
0.010
0.020
L
0.4
1.27
0.016
0.050
k
0°
8°
0°
8°
ddd
0.100
0.004
0016019D
10/15
74VHCT14A
Package mechanical data
TSSOP14 MECHANICAL DATA
mm.
inch
DIM.
MIN.
TYP
A
MAX.
MIN.
TYP.
MAX.
1.2
A1
0.05
A2
0.8
b
0.047
0.15
0.002
0.004
0.006
1.05
0.031
0.039
0.041
0.19
0.30
0.007
0.012
c
0.09
0.20
0.004
0.0089
D
4.9
5
5.1
0.193
0.197
0.201
E
6.2
6.4
6.6
0.244
0.252
0.260
E1
4.3
4.4
4.48
0.169
0.173
0.176
1
e
0.65 BSC
K
0˚
L
0.45
A
0.60
0.0256 BSC
8˚
0˚
0.75
0.018
8˚
0.024
0.030
A2
A1
b
e
K
c
L
E
D
E1
PIN 1 IDENTIFICATION
1
0080337D
11/15
Package mechanical data
74VHCT14A
Tape & Reel SO-14 MECHANICAL DATA
mm.
inch
DIM.
MIN.
A
MAX.
MIN.
330
13.2
TYP.
MAX.
12.992
C
12.8
D
20.2
0.795
N
60
2.362
T
12/15
TYP
0.504
22.4
0.519
0.882
Ao
6.4
6.6
0.252
0.260
Bo
9
9.2
0.354
0.362
Ko
2.1
2.3
0.082
0.090
Po
3.9
4.1
0.153
0.161
P
7.9
8.1
0.311
0.319
74VHCT14A
Package mechanical data
Tape & Reel TSSOP14 MECHANICAL DATA
mm.
inch
DIM.
MIN.
A
TYP
MAX.
MIN.
330
MAX.
12.992
C
12.8
D
20.2
0.795
N
60
2.362
T
13.2
TYP.
0.504
22.4
0.519
0.882
Ao
6.7
6.9
0.264
0.272
Bo
5.3
5.5
0.209
0.217
Ko
1.6
1.8
0.063
0.071
Po
3.9
4.1
0.153
0.161
P
7.9
8.1
0.311
0.319
13/15
Revision history
8
74VHCT14A
Revision history
Table 10. Revision history
14/15
Date
Revision
Changes
12-Nov-2004
1
First release
03-May-2007
2
Document reformatted, updated Table 6 on page 6
74VHCT14A
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15/15