由其分销商提供的 Texas Instruments SN74ALS646FN 的描述。
Non-inverting Tristate 4.5V Bus Transceiver,Register PLCC-28 SMD mount 11.51mm*11.51mm*4.06mm
Octal egistered Bus Transceivers with 3-State Outputs 28-PLCC 0 to 70
Bus XCVR Single 8-CH 3-ST 28-Pin PLCC Tube