74HCT165
Full part number: 74HCT165BQ
Every spec below is cited to the manufacturer datasheet. Compare the closest alternatives, then ask the assistant what it means for your design.
What the 74HCT165 does
The 74HC165 and 74HCT165 are 8-bit parallel-in/serial-out shift registers available in commercial, industrial, and military temperature grades. These devices feature a wide supply voltage range from 2.0 to 6.0 V, high noise immunity, and asynchronous parallel load capability. Input levels accommodate both CMOS and TTL standards depending on the specific variant. The 74HC165 operates at CMOS levels while the 74HCT165 accepts TTL levels. They are typically used for parallel-to-serial data conversion in digital logic applications. Multiple package options include SO16, TSSOP16, and DHVQFN16 to suit various board space requirements. The parts support overvoltage tolerant inputs up to 15 V for level shifting tasks.
Datasheet parameters
| Parameter | Min | Typ | Max | Conditions | Source |
|---|---|---|---|---|---|
| quiescent current | — | — | 8 µA | VI = VCCor GND; IO = 0 A; VCC = 6.0 V; icc; 8-bit parallel-in/serial out shift register | Nexperia datasheet, p. 6 — 8-bit parallel-in/serial out shift register |
| output current (abs max) | — | — | 25 mA | -0.5 V < VO< VCC+ 0.5 V; io; Limiting values | Nexperia datasheet, p. 5 — Table 4. Limiting values |
| supply voltage range | 4.5 V | 5 V | 5.5 V | vcc; Recommended operating conditions | Nexperia datasheet, p. 5 — Table 5. Recommended operating conditions |
| operating temperature | -40 °C | — | 125 °C | tamb; Recommended operating conditions | Nexperia datasheet, p. 5 — Table 5. Recommended operating conditions |
| power dissipation (abs max) | — | — | 500 mW | [2]; ptot; Limiting values | Nexperia datasheet, p. 5 — Table 4. Limiting values |
| input capacitance | — | 3.5 pF | — | ci; 8-bit parallel-in/serial out shift register | Nexperia datasheet, p. 6 — 8-bit parallel-in/serial out shift register |
| propagation delay | — | 17 ns | 34 ns | VCC = 4.5 V; tpd; 74HCT165 | Nexperia datasheet, p. 8 — 8-bit parallel-in/serial out shift register |
| output voltage high | 1.9 V | 2 V | — | IO = -20 µA; VCC = 2.0 V; voh; 8-bit parallel-in/serial out shift register | Nexperia datasheet, p. 6 — 8-bit parallel-in/serial out shift register |
| output voltage low | — | 0 V | 100 mV | IO = 20 µA; VCC = 2.0 V; vol; 8-bit parallel-in/serial out shift register | Nexperia datasheet, p. 6 — 8-bit parallel-in/serial out shift register |
Closest matches to 74HCT165
Frequently asked questions
What is the input capacitance (ci) of the 74HCT165BQ 8-bit parallel-in/serial out shift register?
The input capacitance (ci) is 3.5 pF.
What is the maximum operating temperature (tamb) under Recommended operating conditions?
The maximum operating temperature (tamb) under Recommended operating conditions is 125 °C.
What is the output current limit for the 74HCT165BQ when -0.5 V < VO < VCC + 0.5 V?
The output current is 25 mA.
What is the output voltage high (VOH) for the 74HCT165BQ when IO = -20 µA and VCC = 2.0 V?
The output voltage high is 2 V.
What is the output voltage low (vol) for the 74HCT165BQ 8-bit parallel-in/serial out shift register when IO = 20 µA and VCC = 2.0 V?
The output voltage low is 0 V.
What is the maximum power dissipation (ptot) under condition [2] according to the Limiting values?
The maximum power dissipation is 500 mW.
What is the propagation delay (tpd) for the 74HCT165BQ when VCC = 4.5 V?
The propagation delay is 17 ns.
What is the quiescent current when VI = VCC or GND, IO = 0 A, and VCC = 6.0 V?
The quiescent current is 8 µA.
What is the supply voltage range for the 74HCT165BQ under recommended operating conditions?
The supply voltage range is 5 V at vcc.