74AHCT14A
Hex inverting Schmitt trigger
Rev. 2 — 26 October 2016
Product data sheet
1. General description
The 74AHCT14A is a hexadecimal inverter with Schmitt-trigger inputs, capable of
transforming slowly changing input signals into sharply defined, jitter-free output signals.
Designed to operate over a VCC range from 4.5 V to 5.5 V, the inputs are TTL compatible.
This range allows the device to be used to translate from 3.3 V to 5 V.
This device is fully specified for partial Power-down applications using IOFF.
The IOFF circuitry disables the output, preventing the damaging backflow current through
the device when it is powered down.
2. Features and benefits
Direct interface with TTL levels
Supply voltage range from 4.5 V to 5.5 V
Typical tpd of 3.7 ns at 5 V
Typical VOL(p) < 0.8 V at VCC = 5 V, Tamb = 25 C
Typical VOH(v) > 2.3 V at VCC = 5 V, Tamb = 25 C
Supports mixed-mode voltage operation on all ports
IOFF circuitry provides partial Power-down mode operation
Latch-up performance exceeds 250 mA per JESD 78 Class II
ESD protection:
HBM ANSI/ESDA/JEDEC JS-001 Class 2 exceeds 3 kV
MM JESD22-A115-A exceeds 200 V
CDM JESD22-C101E exceeds 2 kV
Specified from 40 C to +85 C and from 40 C to +125 C
74AHCT14A
Nexperia
Hex inverting Schmitt trigger
3. Ordering information
Table 1.
Ordering information
Type number
Package
74AHCT14APW
Temperature range Name
Description
Version
40 C to +125 C
plastic thin shrink small outline package; 14 leads;
body width 4.4 mm
SOT402-1
TSSOP14
4. Functional diagram
$
<
$
<
$
<
$
<
$
<
$
<
PQD
Fig 1.
Logic symbol
$
<
PQD
DDF
Fig 2.
IEC logic symbol
Fig 3.
Logic diagram
(one Schmitt-trigger)
5. Pinning information
5.1 Pinning
$+&7$
$
9&&
<
$
$
<
<
$
$
<
<
$
*1'
<
DDD
Fig 4.
Pin configuration TSSOP14
74AHCT14A
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 26 October 2016
©
Nexperia B.V. 2017. All rights reserved
2 of 13
74AHCT14A
Nexperia
Hex inverting Schmitt trigger
5.2 Pin description
Table 2.
Pin description
Symbol
Pin
Description
1A, 2A, 3A, 4A, 5A, 6A
1, 3, 5, 9, 11, 13
data input
1Y, 2Y, 3Y, 4Y, 5Y, 6Y
2, 4, 6, 8, 10, 12
data output
GND
7
ground (0 V)
VCC
14
supply voltage
6. Functional description
Table 3.
Function table[1]
Input
Output
nA
nY
L
H
H
L
[1]
H = HIGH voltage level;
L = LOW voltage level.
7. Limiting values
Table 4.
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
Symbol
Parameter
VCC
supply voltage
Conditions
output voltage
VO
output HIGH or LOW state
Max
Unit
0.5
+7.0
V
[1]
0.5
+7.0
V
[2][3]
0.5
VCC + 0.5
V
[2]
0.5
+7.0
V
input voltage
VI
Min
output power-down
IIK
input clamping current
VI < 0 V
20
-
mA
IOK
output clamping current
VO < 0 V
20
-
mA
IO
output current
VO = 0 V to VCC
-
25
mA
ICC
supply current
-
75
mA
IGND
ground current
75
-
mA
Tstg
storage temperature
65
+150
C
-
500
mW
total power dissipation
Ptot
Tamb = 40 C to +125 C
[4]
[1]
If the input current ratings are observed, the minimum input voltage ratings may be exceeded.
[2]
If the output current ratings are observed, the output voltage ratings may be exceeded.
[3]
This value is limited to 7 V maximum.
[4]
For TSSOP14 packages: above 75 C, the value of Ptot derates linearly at 7 mW/K.
74AHCT14A
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 26 October 2016
©
Nexperia B.V. 2017. All rights reserved
3 of 13
74AHCT14A
Nexperia
Hex inverting Schmitt trigger
8. Recommended operating conditions
Table 5.
Recommended operating conditions
Voltages are referenced to GND (ground = 0 V).
Symbol
Parameter
Conditions
VCC
supply voltage
VI
input voltage
VO
output voltage
Tamb
ambient temperature
t/V
input transition rise and fall rate
Min
Typ
Max
Unit
4.5
5.0
5.5
V
0
-
5.5
V
output HIGH or LOW state
0
-
VCC
V
output power-down
0
-
5.5
V
40
+25
+125
C
-
-
1
VCC = 5.0 V 0.5 V
ms/V
9. Static characteristics
Table 6.
Static characteristics
Voltages are referenced to GND (ground = 0 V).
Symbol Parameter
VT+
VT
VH
VOH
25 C
Conditions
Min
Typ
Max
Min
Max
Min
Max
VCC = 4.5 V
-
-
1.9
-
1.9
-
1.9
V
VCC = 5.5 V
-
-
2.1
-
2.1
-
2.1
V
negative-going VCC = 4.5 V
threshold
VCC = 5.5 V
voltage
0.5
-
-
0.5
-
0.5
-
V
0.6
-
-
0.6
-
0.6
-
V
hysteresis
voltage
VCC = 4.5 V
0.4
-
1.4
0.4
1.4
0.4
1.4
V
VCC = 5.5 V
0.4
-
1.5
0.4
1.5
0.4
1.5
V
positive-going
threshold
voltage
HIGH-level
VI = VIH or VIL; VCC = 4.5 V
output voltage
IO = 50 A
IO = 8 mA
VOL
40 C to +85 C 40 C to +125 C Unit
LOW-level
VI = VIH or VIL; VCC = 4.5 V
output voltage
IO = 50 A
IO = 8 mA
4.4
4.5
-
4.4
-
4.4
-
V
3.94
-
-
3.8
-
3.7
-
V
-
0
0.1
-
0.1
-
0.1
V
-
-
0.36
-
0.44
-
0.55
V
IOFF
power-off
leakage
current
VI or VO = GND to 5.5 V;
VCC = 0 V
-
-
0.5
-
5
-
5
A
II
input leakage
current
VI = VCC or GND;
VCC = 0 V to 5.5 V
-
-
0.1
-
1
-
1
A
ICC
supply current VI = VCC or GND; IO = 0 A;
VCC = 5.5 V
-
-
2
-
20
-
20
A
ICC
additional
per input pin; VI = 3.4 V;
supply current IO = 0 A; other pins at VCC or
GND; VCC = 5.5 V
-
-
1.35
-
1.5
-
1.5
mA
74AHCT14A
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 26 October 2016
©
Nexperia B.V. 2017. All rights reserved
4 of 13
74AHCT14A
Nexperia
Hex inverting Schmitt trigger
9.1 Transfer characteristics waveforms
92
97
9,
9+
97
9,
9+
97
Fig 5.
97
92
PQD
PQD
Transfer characteristics
Fig 6.
DDD
Transfer characteristics definitions
DDD
,&&
P$
,&&
P$
9,19
9,19
a. VCC = 4.5 V
Fig 7.
b. VCC = 5.5 V
Typical transfer characteristics
74AHCT14A
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 26 October 2016
©
Nexperia B.V. 2017. All rights reserved
5 of 13
74AHCT14A
Nexperia
Hex inverting Schmitt trigger
10. Dynamic characteristics
Table 7.
Dynamic characteristics
GND = 0 V. For test circuit, see Figure 9.
Symbol Parameter
propagation
delay
tpd
25 C
Conditions
40 C to +85 C 40 C to +125 C Unit
Min
Typ[1]
Max
Min
Max
Min
Max
CL = 15 pF
-
3.7
7.6
1
9
1
9.7
ns
CL = 50 pF
-
5
9.6
1
11
1
11.9
ns
nA to nY; see Figure 8
[2]
VCC = 4.5 V to 5.5 V
CI
input
capacitance
VI = VCC or GND;
VCC = 5 V
-
2
6
-
6
-
6
pF
CO
output
capacitance
VO = VCC or GND;
VCC = 5 V
-
5
-
-
-
-
-
pF
CPD
power
dissipation
capacitance
per buffer;
CL = 0 pF; f = 10 MHz;
VI = GND to VCC
-
10
-
-
-
-
-
pF
[3]
[1]
Typical values are measured at Tamb = 25 C and VCC = 5 V.
[2]
tpd is the same as tPLH and tPHL.
[3]
CPD is used to determine the dynamic power dissipation PD (W).
PD = CPD VCC2 fi + (CL VCC2 fo) where:
fi = input frequency in MHz;
fo = output frequency in MHz;
CL = output load capacitance in pF;
VCC = supply voltage in Volts.
74AHCT14A
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 26 October 2016
©
Nexperia B.V. 2017. All rights reserved
6 of 13
74AHCT14A
Nexperia
Hex inverting Schmitt trigger
Table 8.
Noise characteristics
GND = 0 V. For test circuit, see Figure 9.
Symbol
Parameter
Tamb = 25 C
Conditions
Unit
Min
Typ
Max
VCC = 5 V; CL = 50 pF
VOL(p)
LOW-level output voltage (peak)
-
0.4
0.8
V
VOL(v)
LOW-level output voltage (valley)
0.8
0.2
-
V
VOH(v)
HIGH-level output voltage (valley)
-
4.5
-
V
VIH(AC)
AC HIGH-level input voltage
2
-
-
V
VIL(AC)
AC LOW-level input voltage
-
-
0.8
V
11. Waveforms
9,
90
Q$LQSXW
90
*1'
W 3+/
W 3/+
92+
90
Q
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