74HCT PHILIPS [NXP Semiconductors], 74HCT Datasheet - Page 2

• Manufacturer Part Number: 74HCT
• Description: HCMOS family characteristics
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
GENERAL
These family specifications cover the common electrical
ratings and characteristics of the entire HCMOS
74HC/HCT/HCU family, unless otherwise specified in the
individual device data sheet.
INTRODUCTION
The 74HC/HCT/HCU high-speed Si-gate CMOS logic
family combines the low power advantages of the
HE4000B family with the high speed and drive capability of
the low power Schottky TTL (LSTTL).
The family will have the same pin-out as the 74 series and
provide the same circuit functions.
In these families are included several HE4000B family
circuits which do not have TTL counterparts, and some
special circuits.
The basic family of buffered devices, designated as
XX74HCXXXXX, will operate at CMOS input logic levels
for high noise immunity, negligible typical quiescent supply
and input current. It is operated from a power supply of
2 to 6 V.
RECOMMENDED OPERATING CONDITIONS FOR 74HC/HCT
Note
1. For analog switches, e.g. “4016”, “4051 series”, “4351 series”, “4066” and “4067”, the specified maximum operating
March 1988
SYMBOL PARAMETER
V
V
V
T
T
t
r
, t
amb
amb
CC
I
O
HCMOS family characteristics
f
supply voltage is 10 V.
DC supply voltage
DC input voltage range
DC output voltage range
operating ambient temperature range
operating ambient temperature range
input rise and fall times except for
Schmitt-trigger inputs
min. typ. max. min. typ. max.
2.0
0
0
40
40
74HC
5.0
6.0
2
A subset of the family, designated as XX74HCTXXXXX,
with the same features and functions as the “HC-types”,
will operate at standard TTL power supply voltage
(5 V
pin-to-pin compatible CMOS replacements to reduce
power consumption without loss of speed. These types are
also suitable for converted switching from TTL to CMOS.
Another subset, the XX74HCUXXXXX, consists of
single-stage unbuffered CMOS compatible devices for
application in RC or crystal controlled oscillators and other
types of feedback circuits which operate in the linear
mode.
HANDLING MOS DEVICES
Inputs and outputs are protected against electrostatic
effects in a wide variety of device-handling situations.
However, to be totally safe, it is desirable to take handling
precautions into account
(see also “HANDLING PRECAUTIONS” ).
6.0
V
V
1000
500
400
85
125
CC
CC
10%) and logic input levels (0.8 to 2.0 V) for use as
4.5
0
0
40
40
74HCT
5.0
6.0
5.5
V
V
500
85
125
CC
CC
SPECIFICATIONS
UNIT CONDITIONS
V
V
V
ns
C
C
see DC and AC
CHAR. per device
V
V
V
CC
CC
CC
= 2.0 V
= 4.5 V
= 6.0 V
FAMILY