Texas Instruments 5962-9951001QSA
- Part Number:
- 5962-9951001QSA
- Manufacturer:
- Texas Instruments
- Ventron No:
- 6406171-5962-9951001QSA
- Description:
- Octal Edge-Triggered D-type Flip-Flops With 3-State Outputs
- Datasheet:
- sn54lvth374
- Number of channels8
- Technology familyLVT
- Supply voltage (min) (V)2.7
- Supply voltage (max) (V)3.6
- Input typeTTL-Compatible CMOS
- Output type3-State
- Clock frequency (max) (MHz)150
- IOL (max) (mA)64
- IOH (max) (mA)-32
- Supply current (max) (μA)5000
- FeaturesBus-hold
- Operating temperature range (°C)-55 to 125
- RatingMilitary
These octal flip-flops are designed specifically for low-voltage (3.3-V) VCC operation, but with the capability to provide a TTL interface to a 5-V system environment.
The eight flip-flops of the LVTH374 devices are edge-triggered D-type flip-flops. On the positive transition of the clock (CLK) input, the Q outputs are set to the logic levels set up at the data (D) inputs.
A buffered output-enable (OE)\ input can be used to place the eight outputs in either a normal logic state (high or low logic levels) or the high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines significantly. The high-impedance state and increased drive provide the capability to drive bus lines without need for interface or pullup components.
OE\ does not affect the internal operations of the flip-flops. Old data can be retained or new data can be entered while the outputs are in the high-impedance state.
When VCC is between 0 and 1.5 V, the devices are in the high-impedance state during power up or power down. However, to ensure the high-impedance state above 1.5 V, OE\ should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended.
These devices are fully specified for hot-insertion applications using Ioff and power-up 3-state. The Ioff circuitry disables the outputs, preventing damaging current backflow through the devices when they are powered down. The power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down, which prevents driver conflict.
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