1. General description
The 74HC595-Q100; 74HCT595-Q100 is an 8-bit serial-in/serial or parallel-out shift register with
a storage register and 3-state outputs. Both the shift and storage register have separate clocks.
The device features a serial input (DS) and a serial output (Q7S) to enable cascading and an
asynchronous reset MR input. A LOW on MR will reset the shift register. Data is shifted on the
LOW-to-HIGH transitions of the SHCP input. The data in the shift register is transferred to the
storage register on a LOW-to-HIGH transition of the STCP input. If both clocks are connected
together, the shift register will always be one clock pulse ahead of the storage register. Data in the
storage register appears at the output whenever the output enable input (OE) is LOW. A HIGH on
OE causes the outputs to assume a high-impedance OFF-state. Operation of the OE input does
not affect the state of the registers. Inputs include clamp diodes. This enables the use of current
limiting resistors to interface inputs to voltages in excess of VCC.
This product has been qualified to the Automotive Electronics Council (AEC) standard Q100
(Grade 1) and is suitable for use in automotive applications.
2. Features and benefits
• Automotive product qualification in accordance with AEC-Q100 (Grade 1)
• Specified from -40 °C to +85 °C and from -40 °C to +125 °C
• 8-bit serial input
• 8-bit serial or parallel output
• Storage register with 3-state outputs
• Shift register with direct clear
• 100 MHz (typical) shift out frequency
• Complies with JEDEC standard no. 7A
• Input levels:
• For 74HC595-Q100: CMOS level
• For 74HCT595-Q100: TTL level
• ESD protection:
• MIL-STD-883, method 3015 exceeds 2000 V
• HBM JESD22-A114F exceeds 2000 V
• MM JESD22-A115-A exceeds 200 V (C = 200 pF, R = 0 Ω)
• Multiple package options
• DHVQFN package with Side-Wettable Flanks enabling Automatic Optical Inspection (AOI) of
solder joints
3. Applications
• Serial-to-parallel data conversion
• Remote control holding register