Texas Instruments

The SNx4AHC573 devices are octal transparent D-type latches designed for 2V to 5.5V VCC operation. The SNx4AHC573 devices are octal transparent D-type latches designed for 2V to 5.5V VCC operation.

The SNx4AHC574 devices are octal edge-triggered D-type flip-flops that feature 3-state outputs designed specifically for driving highly capacitive or relatively low-impedance loads. These devices are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers. The SNx4AHC574 devices are octal edge-triggered D-type flip-flops that feature 3-state outputs designed specifically for driving highly capacitive or relatively low-impedance loads. These devices are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.

The SNx4AHC594 devices contain an 8-bit serial-in, parallel-out shift register that feeds an 8-bit D-type storage register. Separate clocks and direct overriding clear ( SRCLR, RCLR) inputs are provided on the shift and storage registers. A serial (QH′) output is provided for cascading purposes. The SNx4AHC594 devices contain an 8-bit serial-in, parallel-out shift register that feeds an 8-bit D-type storage register. Separate clocks and direct overriding clear ( SRCLR, RCLR) inputs are provided on the shift and storage registers. A serial (QH′) output is provided for cascading purposes.

The SN74AHC595 device contains an 8-bit serial-in, parallel-out shift register that feeds an 8-bit D-type storage register. The storage register has parallel 3-state outputs. Separate clocks are provided for both the shift and storage registers. The shift register has a direct overriding clear ( SRCLR) input, a serial (SER) input, and a serial output for cascading. When the output-enable ( OE) input is high, all outputs except QH′ are in the high-impedance state. The SN74AHC595 device contains an 8-bit serial-in, parallel-out shift register that feeds an 8-bit D-type storage register. The storage register has parallel 3-state outputs. Separate clocks are provided for both the shift and storage registers. The shift register has a direct overriding clear ( SRCLR) input, a serial (SER) input, and a serial output for cascading. When the output-enable ( OE) input is high, all outputs except QH′ are in the high-impedance state.

The SN74AHC74 dual positive-edge-triggered device is a D-type flip-flop. A low level at the preset (PRE)\ or clear (CLR)\ inputs sets or resets the outputs, regardless of the levels of the other inputs. When PRE\ and CLR\ are inactive (high), data at the data (D) input meeting the setup time requirements is transferred to the outputs on the positive-going edge of the clock pulse. Clock triggering occurs at a voltage level and is not directly related to the rise time of the clock pulse. Following the hold-time interval, data at the D input can be changed without affecting the levels at the outputs. The SN74AHC74 dual positive-edge-triggered device is a D-type flip-flop. A low level at the preset (PRE)\ or clear (CLR)\ inputs sets or resets the outputs, regardless of the levels of the other inputs. When PRE\ and CLR\ are inactive (high), data at the data (D) input meeting the setup time requirements is transferred to the outputs on the positive-going edge of the clock pulse. Clock triggering occurs at a voltage level and is not directly related to the rise time of the clock pulse. Following the hold-time interval, data at the D input can be changed without affecting the levels at the outputs.

The SN74AHC8541 8-bit inverting/non-inverting buffers are ideal for driving bus lines or buffer memory address registers. These devices feature inputs and outputs on opposite sides of the package to facilitate printed circuit board layout. All outputs are in the high-impedance state (disabled) when the output-enable (OE) input is high. WhenOEis low, the respective gate passes the data from the D input to its Y output. The T/Cinput selects inverting or non-inverting data transfer. When the T/Cinput is high, it provides non-inverting buffers. When the T/Cinput is low, it provides inverting buffers when they are not in the high-impedance state. To ensure the high-impedance state during power up or power down,OEshould be tied to VCCthrough a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. The SN74AHC8541 8-bit inverting/non-inverting buffers are ideal for driving bus lines or buffer memory address registers. These devices feature inputs and outputs on opposite sides of the package to facilitate printed circuit board layout. All outputs are in the high-impedance state (disabled) when the output-enable (OE) input is high. WhenOEis low, the respective gate passes the data from the D input to its Y output. The T/Cinput selects inverting or non-inverting data transfer. When the T/Cinput is high, it provides non-inverting buffers. When the T/Cinput is low, it provides inverting buffers when they are not in the high-impedance state. To ensure the high-impedance state during power up or power down,OEshould be tied to VCCthrough a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

The SNx4AHC86 devices are quadruple 2-input exclusive-OR gates. These devices perform the Boolean function Y = A ⊕ B or Y = AB + A B in positive logic. A common application is as a true or complement element. If one of the inputs is low, the other input is reproduced in true form at the output. If one of the inputs is high, the signal on the other input is reproduced inverted at the output. The SNx4AHC86 devices are quadruple 2-input exclusive-OR gates. These devices perform the Boolean function Y = A ⊕ B or Y = AB + A B in positive logic. A common application is as a true or complement element. If one of the inputs is low, the other input is reproduced in true form at the output. If one of the inputs is high, the signal on the other input is reproduced inverted at the output.

The ’AHCT00 device performs the Boolean function Y = (A • B)\ or Y = A\ + B\ in positive logic. The ’AHCT00 device performs the Boolean function Y = (A • B)\ or Y = A\ + B\ in positive logic.

These devices contain four independent 2-input NOR gates that perform the Boolean function Y = A × B or Y = A + B in positive logic. These devices contain four independent 2-input NOR gates that perform the Boolean function Y = A × B or Y = A + B in positive logic.

The SNx4AHCT04 devices contain six independent inverters. These devices perform the Boolean function Y = A. The SNx4AHCT04 devices contain six independent inverters. These devices perform the Boolean function Y = A.