RS232 transceiver in a 24-DIP — four full-duplex channels
The LT1134ACN#PBF is a full-duplex RS232 transceiver from Analog Devices, integrating four drivers and four receivers in a single 24-DIP package. It handles data rates up to 250KBd, making it a direct fit for multi-port serial interfaces in legacy test equipment, industrial controllers, and point-of-sale terminals that still use through-hole assembly.
With four drivers and four receivers, this part replaces two dual-channel RS232 ICs, saving board space and reducing component count. The 250KBd data rate supports standard UART speeds up to 115.2 kbps with margin, but falls short of the 1 Mbps rates offered by newer transceivers — check your baud-rate budget before committing. Supply voltage is 4.5V to 5.5V, so it runs directly from a 5V rail without an external regulator. The receiver hysteresis of 400 mV provides noise immunity on long cable runs, a practical advantage in electrically noisy shop-floor environments.
Active production — no obsolescence concern
It is RoHS3 compliant (the #PBF suffix indicates lead-free plating). Sourced per RFQ against your BOM quantity — confirm the tube quantity and lead time at quote.