74LCX374
OCTAL D-TYPE FLIP FLOP NON-INVERTING (3-STATE) WITH 5V TOLERANT INPUTS AND OUTPUTS
■5V TOLERANT INPUTS AND OUTPUTS
■HIGH SPEED:
fMAX = 150 MHz (MIN.) at VCC = 3V
■POWER DOWN PROTECTION ON INPUTS AND OUTPUTS
■SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 24mA (MIN) at VCC = 3V
■PCI BUS LEVELS GUARANTEED AT 24 mA
■BALANCED PROPAGATION DELAYS: tPLH tPHL
■OPERATING VOLTAGE RANGE:
VCC(OPR) = 2.0V to 3.6V (1.5V Data Retention)
■PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 374
■LATCH-UP PERFORMANCE EXCEEDS 500mA (JESD 17)
■ESD PERFORMANCE:
HBM > 2000V (MIL STD 883 method 3015); MM > 200V
DESCRIPTION
The 74LCX374 is a low voltage CMOS OCTAL D-TYPE FLIP FLOP with 3 STATE OUTPUT NON-INVERTING fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS technology. It is ideal for low power and high speed 3.3V applications; it can be interfaced to 5V signal environment for both inputs and outputs.
These 8 bit D-Type flip-flops are controlled by a clock input (CK) and an output enable input (OE). On the positive transition of the clock, the Q
SOP TSSOP
PACKAGE |
T & R |
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SOP |
74LCX374MTR |
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TSSOP |
74LCX374TTR |
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outputs will be set to the logic state 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) and while 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.
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 static discharge, giving them 2KV ESD immunity and transient excess voltage.
September 2004 |
Rev. 4 |
1/13 |
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74LCX374
PIN N° |
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NAME AND FUNCTION |
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1 |
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OE |
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3 State Output Enable |
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Input (Active LOW) |
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2, 5, 6, 9, 12, |
Q0 to Q7 |
3-State Outputs |
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15, 16, 19 |
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3, 4, 7, 8, 13, |
D0 to D7 |
Data Inputs |
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14, 17, 18 |
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11 |
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CK |
Clock Input (LOW to HIGH, |
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edge triggered) |
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10 |
GND |
Ground (0V) |
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20 |
VCC |
Positive Supply Voltage |
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INPUT |
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OUTPUT |
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OE |
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CK |
D |
Q |
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H |
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X |
X |
Z |
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L |
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X |
NO CHANGE |
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L |
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L |
L |
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L |
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H |
H |
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X : Don’t Care
Z : High Impedance
This logic diagram has not be used to estimate propagation delays
2/13
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74LCX374 |
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Table 4: Absolute Maximum Ratings |
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Symbol |
Parameter |
Value |
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Unit |
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VCC |
Supply Voltage |
-0.5 to +7.0 |
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V |
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VI |
DC Input Voltage |
-0.5 to +7.0 |
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V |
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VO |
DC Output Voltage (OFF State) |
-0.5 to +7.0 |
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V |
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VO |
DC Output Voltage (High or Low State) (note 1) |
-0.5 to VCC + 0.5 |
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V |
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IIK |
DC Input Diode Current |
- 50 |
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mA |
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IOK |
DC Output Diode Current (note 2) |
- 50 |
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mA |
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IO |
DC Output Current |
± |
50 |
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mA |
ICC |
DC Supply Current per Supply Pin |
± |
100 |
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mA |
IGND |
DC Ground Current per Supply Pin |
± |
100 |
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mA |
Tstg |
Storage Temperature |
-65 to +150 |
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°C |
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TL |
Lead Temperature (10 sec) |
300 |
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°C |
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied
1)IO absolute maximum rating must be observed
2)VO < GND
Symbol |
Parameter |
Value |
Unit |
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VCC |
Supply Voltage (note 1) |
2.0 to 3.6 |
V |
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VI |
Input Voltage |
0 to 5.5 |
V |
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VO |
Output Voltage (OFF State) |
0 to 5.5 |
V |
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VO |
Output Voltage (High or Low State) |
0 to VCC |
V |
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IOH, IOL |
High or Low Level Output Current (VCC = 3.0 to 3.6V) |
± |
24 |
mA |
IOH, IOL |
High or Low Level Output Current (VCC = 2.7V) |
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12 |
mA |
Top |
Operating Temperature |
-55 to 125 |
°C |
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dt/dv |
Input Rise and Fall Time (note 2) |
0 to 10 |
ns/V |
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1)Truth Table guaranteed: 1.5V to 3.6V
2)VIN from 0.8V to 2V at VCC = 3.0V
3/13
74LCX374
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Test Condition |
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Value |
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Symbol |
Parameter |
VCC |
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-40 to 85 °C |
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-55 to 125 °C |
Unit |
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(V) |
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Min. |
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Max. |
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Min. |
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Max. |
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VIH |
High Level Input |
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2.0 |
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2.0 |
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V |
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Voltage |
2.7 to 3.6 |
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VIL |
Low Level Input |
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0.8 |
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0.8 |
V |
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Voltage |
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VOH |
High Level Output |
2.7 to 3.6 |
IO=-100 A |
VCC-0.2 |
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VCC-0.2 |
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Voltage |
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2.7 |
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IO=-12 mA |
2.2 |
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2.2 |
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V |
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3.0 |
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IO=-18 mA |
2.4 |
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2.4 |
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IO=-24 mA |
2.2 |
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2.2 |
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VOL |
Low Level Output |
2.7 to 3.6 |
IO=100 A |
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0.2 |
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0.2 |
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Voltage |
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2.7 |
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IO=12 mA |
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0.4 |
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0.4 |
V |
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3.0 |
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IO=16 mA |
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0.4 |
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0.4 |
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IO=24 mA |
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0.55 |
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0.55 |
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II |
Input Leakage |
2.7 to 3.6 |
VI = 0 to 5.5V |
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± 5 |
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± 5 |
A |
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Current |
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Ioff |
Power Off Leakage |
0 |
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VI or VO = 5.5V |
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10 |
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10 |
A |
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Current |
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IOZ |
High Impedance |
2.7 to 3.6 |
VI = VIH or VIL |
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± 5 |
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± 5 |
A |
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Output Leakage |
VO = 0 to VCC |
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Current |
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ICC |
Quiescent Supply |
2.7 to 3.6 |
VI = VCC or GND |
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10 |
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10 |
A |
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Current |
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VI or VO= 3.6 to 5.5V |
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± 10 |
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± 10 |
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∆ ICC |
ICC incr. per Input |
2.7 to 3.6 |
VIH = VCC - 0.6V |
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500 |
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500 |
A |
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Table 7: Dynamic Switching Characteristics |
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Test Condition |
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Value |
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Symbol |
Parameter |
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VCC |
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TA = 25 °C |
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Unit |
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(V) |
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Min. |
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Typ. |
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Max. |
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VOLP |
Dynamic Low Level Quiet |
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3.3 |
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CL = 50pF |
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0.8 |
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V |
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Output (note 1) |
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VIL = 0V, VIH = 3.3V |
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VOLV |
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-0.8 |
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1) Number of outputs defined as "n". Measured with "n-1" outputs switching from HIGH to LOW or LOW to HIGH. The remaining output is measured in the LOW state.
4/13