Standard Logic IC Octal D-Type Flip-Flops with Clear: TC74VHC9273P/FT/FK, TC74VHCT9273P/FT/FK
The TC74VHC9273P/FT/FK and TC74VHCT9273P/FT/FK have the same functionality as that of the TC74HC/AC/VHC/F/ALS/LS273 Series devices. In order to provide the IC with flexibility in its board layout, the D pins are positioned on one side so that each of which are parallel to the corresponding Q pin on the other side. The CLR and the CK input pins employ Schmitt-trigger inputs that make the TC74VHC9273P/FT/FK and TC74VHCT9273P/FT/FK suitable for interfacing between systems with long transmission lines and for bus interfacing of slowlychanging signals.
The TC74VHC9273P/FT/FK are CMOS octal D-type flip-flops that can serve as a 5-V to 3-V shifter, and the TC74VHCT9273P/FT/FK are TTL octal D-type flip-flops that can also serve as a 3-V to 5-V shifter.
Features
- Parallel pinout of the I/O
⇒Provides flexibility in the board layout.
- CLR and CK are Schmitt-trigger-buffered.
⇒Best suited for interfacing between systems with long transmission lines and for bus interfacing of slowly changing signals.
- Offered in a variety of packages such as dual in-line packages (DIP), thin-shrink small outline packages (TSSOP), and ultra-small packages (US), one of the industry's smallest leaded surface-mount packages.
- Designed as new additions to the conventional 5-V devices, TC74VHC/TC74VHCT Series.
⇒Has the same functions as those of the 74HC/AC/VHC/F/ALS/LS273 and exhibits electrical characteristics equivalent to those of the TC74VHC/TC74VHCT Series.
Pin Assignment
- Pin Assignment
In contrast to the typical 74HC/AC/VHC/F/ALS/LS273 Series, the new additions have each of the D input pins arranged in parallel to each of the Q output pins.- Logic Diagram
Application Circuit Example
- Usage example in an amusement application
Best suited for interfacing between systems with long transmission lines and for bus interfacing of slowly changing signals.
Main Characteristics
| Characteristics |
Symbol |
Value |
Condition |
| TC74VHC9273 |
TC74VHCT9273 |
| Operating supply voltage range |
VCC |
2.0V to 5.5V |
4.5V to 5.5V |
|
| Threshold voltages |
High |
VIH |
3.15(max.) |
1.90(max.) |
VCC=4.5V |
| Low |
VIL |
1.35(min.) |
0.5(min.) |
VCC=4.5V |
| Hysteresys voltage(CK,CLR) |
VH |
0.4V to 1.4V |
0.4V to 1.4V |
VCC=4.5V |
| Output currents |
IOH |
-8mA(min.) |
-8mA(min.) |
Ta=25°C, VCC=4.5V, VOH=3.94V |
| IOL |
+8mA(min.) |
+8mA(min.) |
Ta=25°C, VCC=4.5V, VOL=0.36V |
| Propagation delay time(CK-Q) |
tpLH, tpHL |
12.1ns(max.) |
14.1ns(max.) |
Ta=25°C, VCC=4.5V, CL=50pF |
| Maximum clock frequency |
fmax |
80MHz(min.) |
70MHz(min.) |
Ta=25°C, VCC=4.5V, CL=50pF |
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