Military single 12-input, 4.5-V to 5.5-V bipolar NAND gate with 3-state outputs

The 'S134 feature three-state outputs that, when enabled, have the low impedance characteristics of a TTL output with additiona drive capability at high logic levels to permit driving heavily loaded lines without external pull-up resistors. When disabled, both output transistors are turned off presenting a high-impedance state to the bus so the output will act neither as a significant load nor as a driver. The 'S134 outputs are disabled when G is high.