1/11April 2001
HIGH SPEED:
f
MAX
= 270MHz (TYP.) at V
CC
= 5V
LOW POWER DISSIPATION:
I
CC
= 4µA(MAX.) at T
A
=2C
HIGH NOISE IMMUNITY:
V
NIH
= V
NIL
= 28 % V
CC
(MIN.)
50 TRANSMISSION LINE DRIVING
CAPABILITY
SYMMETRICAL OUTPUT IMPEDANCE:
|I
OH
| = I
OL
= 24mA (MIN)
BALANCED PROPAGATION DELAYS:
t
PLH
t
PHL
OPERATING VOLTAGE RANGE:
V
CC
(OPR) = 2V to 6V
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 374
IMPROVED LATCH-UP IMMUNITY
DESCRIPTION
The 74AC374 is an advanced high-speed CMOS
OCTAL D-TYPE FLIP-FLOP with 3 STATE
OUTPUT NON INVERTING fabricated with
sub-micron silicon gate and double-layer metal
wiring C
2
MOS technology.
These 8 bit D-Type Flip-Flop are controlled by a
clock input (CK) and an output enable input (OE
).
On the positive transition of the clock, the Q
outputs will be set to the logic that were setup at
the D inputs.
While the (OE
) input is low, the 8 outputs will be in
a normal logic state (high or low logic level); while
OE
is in high level, the outputs will be in a high
impedance state.
The output control does not affect the internal
operation of flip-flops; that is, the old data can be
retained or the new data can be entered even
while the outputs are off.
All inputs and outputs are equipped with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.
74AC374
OCTAL D-TYPE FLIP-FLOP
WITH 3 STATE OUTPUTS (NON INVERTED)
PIN CONNECTION AND IEC LOGIC SYMBOLS
ORDER CODES
PACKAGE TUBE T & R
DIP 74AC374B
SOP 74AC374M 74AC374MTR
TSSOP 74AC374TTR
TSSOPDIP SOP
Obsolete Product(s) - Obsolete Product(s) Obsolete Product(s) - Obsolete Product(s)
Obsolete Product(s) - Obsolete Product(s) Obsolete Product(s) - Obsolete Product(s)
74AC374
2/11
INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION
TRUTH TABLE
X : Don’t Care
Z : High Impedance
LOGIC DIAGRAM
This logic diagram has not be used to estimate propagation delays
PIN No SYMBOL NAME AND FUNCTION
1OE
3-State Output Enable
(Active LOW)
2, 5, 6, 9, 12,
15, 16,19
Q0 to Q7 3-State Outputs
3, 4, 7, 8, 13,
14, 17, 18
D0 to D7 Data Inputs
11 CLOCK Clock Input (LOW-to-HIGH
Edge Trigger)
10 GND Ground (0V)
20 V
CC
Positive Supply Voltage
INPUTS OUTPUT
OE
CK D Q
HXXZ
L X NO CHANGE
LLL
LH
H
Obsolete Product(s) - Obsolete Product(s) Obsolete Product(s) - Obsolete Product(s)
74AC374
3/11
ABSOLUTE MAXIMUM RATINGS
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied.
RECOMMENDED OPERATING CONDITIONS
1) V
IN
from 30% to 70% of V
CC
Symbol Parameter Value Unit
V
CC
Supply Voltage
-0.5 to +7 V
V
I
DC Input Voltage -0.5 to V
CC
+ 0.5
V
V
O
DC Output Voltage -0.5 to V
CC
+ 0.5
V
I
IK
DC Input Diode Current
± 20 mA
I
OK
DC Output Diode Current
± 20 mA
I
O
DC Output Current
± 50 mA
I
CC
or I
GND
DC V
CC
or Ground Current
± 400 mA
T
stg
Storage Temperature
-65 to +150 °C
T
L
Lead Temperature (10 sec)
300 °C
Symbol Parameter Value Unit
V
CC
Supply Voltage
2 to 6 V
V
I
Input Voltage 0 to V
CC
V
V
O
Output Voltage 0 to V
CC
V
T
op
Operating Temperature
-55 to 125 °C
dt/dv
Input Rise and Fall Time V
CC
= 3.0, 4.5 or 5.5V (note 1)
8 ns/V

74AC374TTR

Mfr. #:
Manufacturer:
STMicroelectronics
Description:
Flip Flops OCTAL DTYPE FLIPFLOP
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

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