74HC164
Full part number: 74HC164BQ
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 74HC164 does
The 74HC164 and 74HCT164 are 8-bit serial-in, parallel-out shift registers available in commercial and industrial temperature ranges. These devices feature two gated serial data inputs, eight parallel outputs, and an asynchronous master reset. They operate across a wide supply voltage range of 2.0 to 6.0 V with CMOS low power dissipation and high noise immunity. The 74HC164 accepts CMOS input levels while the 74HCT164 accepts TTL levels. These registers are typically used for data entry and shifting in digital logic applications. Data shifts on the LOW-to-HIGH clock transitions, and a master reset clears all outputs to LOW. Multiple package options include SO14, TSSOP14, and DHVQFN14.
Datasheet parameters
| Parameter | Min | Typ | Max | Conditions | Source |
|---|---|---|---|---|---|
| quiescent current | — | 100 µA | 360 µA | per input pin; VI = VCC- 2.1 V; IO = 0 A; other inputs at VCCor GND; VCC = 4.5 V to 5.5 V; 8-bit serial-in, parallel-out shift register | Nexperia datasheet, p. 6 — 8-bit serial-in, parallel-out shift register |
| output current (abs max) | — | — | 25 mA | -0.5 V < VO< VCC+ 0.5 V; io; Limiting values | Nexperia datasheet, p. 4 — Table 4. Limiting values |
| supply voltage range | 2 V | 5 V | 6 V | vcc; Recommended operating conditions | Nexperia datasheet, p. 4 — Table 5. Recommended operating conditions |
| operating temperature | -40 °C | 25 °C | 125 °C | tamb; Recommended operating conditions | Nexperia datasheet, p. 4 — Table 5. Recommended operating conditions |
| power dissipation (abs max) | — | — | 500 mW | [2]; ptot; Limiting values | Nexperia datasheet, p. 4 — Table 4. Limiting values |
| input capacitance | — | 3.5 pF | — | ci; 8-bit serial-in, parallel-out shift register | Nexperia datasheet, p. 6 — 8-bit serial-in, parallel-out shift register |
| propagation delay | — | 39 ns | 140 ns | VCC = 2.0 V; tphl; 74HC164 | Nexperia datasheet, p. 6 — Table 7. Dynamic characteristics |
| output voltage high | 1.9 V | 2 V | — | IO = -20 μA; VCC = 2.0 V; voh; 74HC164 | Nexperia datasheet, p. 5 — Table 6. Static characteristics |
| output voltage low | — | 0 V | 100 mV | IO = 20 μA; VCC = 2.0 V; vol; 74HC164 | Nexperia datasheet, p. 5 — Table 6. Static characteristics |
Closest matches to 74HC164
Frequently asked questions
What is the input capacitance of the 74HC164BQ 8-bit serial-in, parallel-out shift register?
The input capacitance is 3.5 pF.
What is the operating temperature (tamb) under Recommended operating conditions?
The operating temperature (tamb) is 25 °C.
What is the output current limit for the 74HC164BQ when -0.5 V < VO < VCC + 0.5 V?
The output current is 25 mA.
What is the output voltage high (VOH) for the 74HC164 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 74HC164 when IO = 20 μA and VCC = 2.0 V?
The output voltage low is 0 V.
What is the power dissipation (ptot) under Limiting values?
The power dissipation is 500 mW.
What is the propagation delay (tphl) for the 74HC164 when VCC = 2.0 V?
The propagation delay (tphl) is 39 ns at VCC = 2.0 V.
What is the quiescent current per input pin for the 74HC164BQ when VI = VCC- 2.1 V, IO = 0 A, other inputs are at VCC or GND, and VCC is between 4.5 V and 5.5 V?
The quiescent current is 100 µA per input pin.
What is the supply voltage range for the 74HC164BQ under Recommended operating conditions?
The supply voltage range is 5 V at Vcc.