SL74HC221D类似电子元器件：

• SL74HCT126N
  • Quad 3-state noninverting buffer. High-performance silicon-gate CMOS.
• SL74HC20N
  • Dual 4-input NAND gate. High-performance silicon-gate CMOS.
• SL74HCT240N
  • Octal 3-state inverting buffer/line driver/line receiver . High-performance silicon-gate CMOS.
• SL74HC139D
  • Dual 1-of-4 decoder/demultiplexer. High-performance silicon-gate CMOS.
• SL74HCT74N
  • Dual D flip-flop with set and reset. High-performance silicon-gate CMOS.
• SL74HCT04D
  • Hex inverter. High-performance silicon-gate CMOS.
• SL74HCT245N
  • Octal 3-state noninverting bus transeiver. High-performance silicon-gate CMOS.
• SL74HC597N
  • 8-bit serial-input/serial or parallel-output shift register with input latch. High-performance silicon-gate CMOS.