SN54HC595
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 SN54HC595 does
The SN54HC595 and SN74HC595 are 8-bit shift registers with 3-state output registers. These devices operate across a wide voltage range of 2 V to 6 V and feature high-current outputs capable of driving up to 15 LSTTL loads. Typical performance includes a propagation delay of 13 ns and a maximum supply current of 80 μA. The parts provide ±6 mA output drive at 5 V and maintain a low input current of 1 μA maximum. Designers typically use them in network switches, power infrastructure, LED displays, and servers. The architecture includes separate clocks for the shift and storage registers, along with a direct overriding clear input for flexible control.
Datasheet parameters
| Parameter | Min | Typ | Max | Conditions | Source |
|---|---|---|---|---|---|
| quiescent current | — | 160 µA | — | VI = VCCor 0, IO = 0; 6 V; MAX = 8; icc; over recommended operating free-air temperature range (unless otherwise noted) | TI datasheet, p. 5 — over recommended operating free-air temperature range (unless otherwise no… |
| output current (abs max) | — | — | 35 mA | VO = 0 to VCC; io; 6.1 Absolute Maximum Ratings | TI datasheet, p. 4 — 6.1 Absolute Maximum Ratings |
| supply voltage range | 2 V | 5 V | 6 V | vcc; 6.3 Recommended Operating Conditions | TI datasheet, p. 4 — 6.3 Recommended Operating Conditions |
| operating temperature | -55 °C | — | 125 °C | ta; 6.3 Recommended Operating Conditions | TI datasheet, p. 4 — 6.3 Recommended Operating Conditions |
| clock frequency | — | — | 6 MHz | 2 V; MAX = 5; fclock; over operating free-air temperature range (unless otherwise noted) | TI datasheet, p. 6 — over operating free-air temperature range (unless otherwise noted) |
| output voltage high | 1.9 V | — | 1.9 V | VI = VIHor VIL; IOH = -20 μA; 2 V; TA = _25°C; 1.9; TYP = 1.998; voh; over recommended operating free-air temperature range (unless otherwise noted) | TI datasheet, p. 5 — over recommended operating free-air temperature range (unless otherwise no… |
| output voltage low | — | 100 mV | — | VI = VIHor VIL; IOL = 20 μA; 2 V; TYP = 0.002; MAX = 0.1; vol; over recommended operating free-air temperature range (unless otherwise noted) | TI datasheet, p. 5 — over recommended operating free-air temperature range (unless otherwise no… |
Closest matches to SN54HC595
Frequently asked questions
What is the maximum clock frequency (fclock) at 2 V over the operating free-air temperature range?
The maximum clock frequency is 6 MHz at 2 V over the operating free-air temperature range.
What is the maximum operating temperature (ta) according to 6.3 Recommended Operating Conditions?
The maximum operating temperature (ta) is 125 °C.
What is the absolute maximum output current (io) when VO = 0 to VCC?
The absolute maximum output current is 35 mA.
What is the output voltage high (VOH) when VI = VIH or VIL, IOH = -20 μA, VCC = 2 V, and TA = 25°C?
The output voltage high is 1.9 V.
What is the maximum output voltage low (vol) when VI = VIH or VIL, IOL = 20 μA, and the supply voltage is 2 V?
The maximum output voltage low is 100 mV.
What is the maximum quiescent current when VI = VCC or 0, IO = 0, at 6 V, with 8 ICs, over the recommended operating free-air temperature range?
The maximum quiescent current is 160 µA.
What is the supply voltage range for the SN54HC595 under vcc conditions?
The supply voltage range is 5 V.