DC CHARACTERISTICS FOR 74HCT
Output capability: standard (except for RTC and CTC
)
I
CC category: MSI
Voltages are referenced to GND (ground = 0 V)
Tamb (°C)
TEST CONDITIONS
74HCT
UNIT
SYMBOL PARAMETER
VI
OTHER
VCC
(V)
+25
−40 to +85 −40 to +125
min. typ. max. min. max. min. max.
VIH
VIL
HIGH level input voltage
LOW level input voltage
HIGH level output voltage
2.0
2.0
2.0
V
V
V
V
V
V
V
4.5 to 5.5
4.5 to 5.5
4.5
note 2
note 2
0.8
0.8
0.8
VOH
3.98
3.84
3.84
4.4
3.7
3.7
4.4
4.4
3.7
RS=GND and MR=GND −IO = 2.6 mA
RS = VCC and MR = VCC −IO = 0.65 mA
RS=GND and MR=GND −IO = 20 µA
RTC output
3.98
4.5
4.4 4.5
4.4 4.5
3.98
4.5
4.4
4.5
RS=VCC and MR=VCC
RS = VIH and MR = VIL
−IO = 20 µA
VOH
VOH
VOH
HIGH level output voltage
TC output
3.84
4.5
−IO = 3.2 mA
C
HIGH level output voltage
except RTC output
4.4 4.5
3.98
4.4
4.4
3.7
V
V
4.5
4.5
VIH or VIL
VIH or VIL
−IO = 20 µA
HIGH level output voltage
except RTC and CTC
outputs
3.84
−IO = 4.0 mA
VOL
LOW level output voltage
0.26
0.1
0.33
0.1
0.4
0.1
0.4
V
V
V
4.5
4.5
4.5
RS=VCC and MR=GND
RS=VCC and MR=GND
RS = VIL and MR = VIH
IO = 2.6 mA
IO = 20 µA
IO = 3.2 mA
R
TC output
LOW level output voltage
TC output
0
0
VOL
VOL
VOL
0.26
0.33
C
LOW level output voltage
except RTC output
0.1
0.1
0.1
0.4
V
V
4.5
4.5
VIH or VIL
VIH or VIL
IO = 20 µA
LOW level output voltage
except RTC and CTC
outputs
0.26
0.33
IO = 4.0 mA
±I
input leakage current
0.1
8.0
1.0
1.0
µA
5.5
VCC or GND
VCC or GND
ICC
∆ICC
quiescent supply current
80.0
450
160.0 µA
490 µA
5.5
IO = 0
additional quiescent supply
current per input pin for unit
load coefficient is 1 (note 1)
100 360
4.5 to 5.5
VCC − 2.1 V
other inputs at
VCC or GND;
I
O = 0
NXP [ NXP ]
