The SN74FB2041A is a 7-bit transceiver designed to translate signals between TTL and backplane transceiver logic (BTL) environments. The device is specifically designed to be compatible with IEEE Std 1194.1-1991. The B port operates at BTL signal levels. The open-collector B ports are specified to sink 100 mA. Two output enables (OEB and OEB) are provided for the B outputs. When OEB is high and OEB is low, the B port is active and reflects the inverse of the data present at the A-input pins. When OEB is low, OEB is high, or VCC is less than 2.1 V, the B port is turned off. The enable/disable logic partitions the device as two 3-bit sections and one 1-bit section.