SGS Thomson Microelectronics 74LCX74TTR, 74LCX74MTR, 74LCX74M Datasheet
74LCX74
LOW VOLTAGE CMOS DUAL D-TYPE FLIP FLOP
WITH 5V TOLERANT INPUTS
■ 5V TOLERANT INPUTS
■ HIGH SPEED :
f
= 150 MHz (MAX.) at VCC = 3V
MAX
■ POWER DOWN PROTECTION ON INPUT S
AND OUTPUTS
■ SYMMETRICAL OUTPUT IMPEDANCE:
|I
| = IOL = 24mA (MIN) at VCC = 3V
OH
■ PCI BUS LEVELS GUARANT EED AT 2 4 mA
■ BALANCED PROPAGATION DELAYS:
t
≅ t
PLH
■ OPERATING VOLTAGE RANGE:
V
CC
PHL
(OPR) = 2.0V to 3.6V (1.5V Data
Retention)
■ PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 74
■ LATCH-UP PERFORMANCE EXCEEDS
500mA (JESD 17)
■ ESD PERFORMANCE:
HBM > 2000V (MIL STD 883 method 3015);
MM > 200V
DESCRIPTION
The 74LCX74 is a low voltage CMOS DUAL
D-TYPE FLIP FLOP WITH PRESET AN D CL EAR
NON INVERTING fabricated with sub-micron
silicon gate and double-layer metal wiring C
2
MOS
technology. It is ideal for low power and high
speed 3.3V applications; it can be interfaced to 5V
signal environment for inputs.
TSSOPSOP
ORDER CODES
PACKAGE TUBE T & R
SOP 74LCX74M 74LCX74MTR
TSSOP 74LCX74TTR
A signal on the D INPUT is transferred to the Q
OUTPUT during the positive going transition of the
clock pulse.
CLR
and PR are independent of the clock and
accomplished by a l ow setting on the app ropriate
input.
It has same speed performance at 3. 3V than 5V
AC/ACT family, combined with a lower power
consumption.
All inputs and outputs are equipped with
protection circuits against stat ic discharge, giving
them 2KV ESD immunity and transient excess
voltage.
PIN CONNECTION AND IEC LOGIC SYMBOLS
1/11September 2001
74LCX74
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
PIN No SYMBOL NAME AND FUNCTION
1, 13 1CLR
2, 12 1D, 2D Data Inputs
3, 11 1CK, 2CK Clock Input (LOW to HIGH, Edge Triggered)
4, 10 1PR
5, 9 1Q, 2Q True Flip-Flop Outputs
6, 8 1Q
7 GND Ground (0V)
14 V
, 2CLR Asynchronous Reset - Direct Input
, 2PR Asynchronous Set - Direct Input
, 2Q Complement Flip-Flop Outputs
CC
Positive Supply Voltage
TRUTH TABLE
INPUTS OUTPUTS
CLR
L H X X L H CLEAR
H L X X H L PRESET
LLXXHH
HHL LH
HHH HL
HHX
X : Don’t Care
2/11
PR DCKQ Q
Q
n
Q
n
FUNCTION
NO CHANGE
74LCX74
LOGIC DIAGRAM
This log i c diagram has not be used to esti m ate propaga tion delays
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
V
V
V
V
I
I
OK
I
I
CC
I
GND
T
T
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied
1) I
absolute ma xim um rating mu st be observed
O
2) V
< GND
O
Supply Voltage
CC
DC Input Voltage
I
DC Output Voltage (VCC = 0V)
O
DC Output Voltage (High or Low State) (note 1) -0.5 to VCC + 0.5
O
DC Input Diode Current
IK
DC Output Diode Current (note 2)
DC Output Current
O
DC Supply Current per Supply Pin
DC Ground Current per Supply Pin
Storage Temperature
stg
Lead Temperature (10 sec)
L
-0.5 to +7.0 V
-0.5 to +7.0 V
-0.5 to +7.0 V
V
- 50 mA
- 50 mA
± 50 mA
± 100 mA
± 100 mA
-65 to +150 °C
300 °C
RECOMMENDED OPERATING CONDITIONS
Symbol Parameter Value Unit
V
V
V
V
I
OH
I
OH
T
dt/dv Input Rise and Fall Time (note 2) 0 to 10 ns/V
1) Truth T abl e guaranteed: 1.5V to 3.6V
2) V
from 0.8V to 2V at VCC = 3.0V
IN
Supply Voltage (note 1)
CC
Input Voltage
I
Output Voltage (VCC = 0V)
O
Output Voltage (High or Low State) 0 to V
O
, I
High or Low Level Output Current (VCC = 3.0 to 3.6V)
OL
, I
High or Low Level Output Current (VCC = 2.7V)
OL
Operating Temperature
op
2.0 to 3.6 V
0 to 5.5 V
0 to 5.5 V
CC
± 24 mA
± 12 mA
-55 to 125 °C
V
3/11
74LCX74
DC SPECIFICATIONS
Test Condition Value
Symbol Parameter
IH
IL
OH
OL
I
I
off
CC
High Level Input
Voltage
Low Level Input
Voltage
High Level Output
Voltage
Low Level Output
Voltage
Input Leakage
Current
Power Off Leakage
Current
Quiescent Supply
Current
ICC incr. per Input
V
V
V
V
I
I
CC
∆I
V
CC
(V)
2.7 to 3.6
2.7 to 3.6
2.7
3.0
2.7 to 3.6
2.7
3.0
2.7 to 3.6
0
2.7 to 3.6
2.7 to 3.6
-40 to 85 °C -55 to 125 °C
Min. Max. Min. Max.
2.0 2.0 V
0.8 0.8 V
=-100 µAVCC-0.2 VCC-0.2
I
O
=-12 mA
I
O
I
=-18 mA
O
I
=-24 mA
O
=100 µA
I
O
I
=12 mA
O
I
=16 mA
O
I
=24 mA
O
= 0 to 5.5V
V
I
or VO = 5.5V
V
I
2.2 2.2
2.4 2.4
2.2 2.2
0.2 0.2
0.4 0.4
0.4 0.4
0.55 0.55
± 5 ± 5 µA
VI = VCC or GND
V
or VO= 3.6 to 5.5V
I
VIH = VCC - 0.6V
± 10 ± 10
500 500 µA
Unit
10 10 µA
10 10
µA
V
V
DYNAMIC SWITCHING CHARACTERISTICS
Test Condition Value
T
Symbol Parameter
V
OLP
V
OLV
1) Number of outputs d ef i ned as "n". Me asured with "n-1" output s switching from HIGH to LO W or LOW to HIGH. The remaini ng outpu t is
measur ed i n the LOW state.
Dynamic Low Level Quiet
Output (note 1)
V
3.3
CC
(V)
= 50pF
C
L
V
= 0V, VIH = 3.3V
IL
Min. Typ. Max.
= 25 °C
A
0.8
-0.8
Unit
V
4/11
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