Texas Instruments 74FCT series D-Type flip-flop, CY74FCT16823ATPAC, 2 elements x 9 bits, positive-edge triggered, tri-state non-inverted outputs, 4.5V–5.5V supply, 20ns max propagation delay at 5V/300pF, 500 µA quiescent, -40°C to 85°C, 56-TSSOP.
| Parameter / Attribute | Specification / Value |
|---|---|
| Type | D-Type |
| Series | 74FCT |
| Output type | Tri-State, Non-Inverted |
| Trigger type | Positive Edge |
| Mounting | Surface Mount |
| Supply voltage | 4.5V ~ 5.5V |
| Current - quiescent | 500 µA |
| Current - output high, low | 32mA |
| Operating temperature | -40°C ~ 85°C (TA) |
| Package | Bulk |
| Function | Standard |
| Case | 56-TFSOP (0.240\", 6.10mm Width) |
| Input capacitance | 4.5 pF |
| Number of elements | 2 |
| Number of bits per element | 9 |
| Max propagation delay @ v, max CL | 20ns @ 5V, 300pF |
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The CY74FCT16823ATPAC is a 74FCT-series D-Type flip-flop with two 9-bit register elements, positive-edge triggering, and tri-state non-inverted outputs.
The 20 ns max propagation delay at 5V with a 300 pF load sets the timing budget for your bus cycle. The 32 mA output drive per pin handles moderate capacitive loads on short traces.
No, this part is RoHS non-compliant. It contains lead and does not meet the EU RoHS directive without an applicable exemption.
Yes, the outputs are tri-state and non-inverted. When the output-enable control is deasserted, the outputs go high-impedance, allowing multiple devices to share a common bus.
The 74FCT series is optimized for 5V-only operation with a tighter supply range (4.5V–5.5V) and typically lower quiescent current than 74ACT. 74ACT parts can run from 2V to 6V and are often used in mixed-voltage designs. Propagation delays are comparable, but 74FCT is a better fit for existing 5V backplanes where you want minimal standby power.
The pinout follows the standard 56-pin TSSOP footprint for this 74FCT register. Power (VCC) and ground (GND) pins are distributed; data inputs (D), clock (CLK), output-enable (OE), and tri-state outputs (Q) are arranged per the TI datasheet. Confirm the exact pin mapping from the official TI datasheet before laying out the PCB.