The inputs are TTL compatible and outputs are similar to totem pole TTL outputs, with active pull-up and pull-down.
其输入与ttl兼容，输出类似于图腾柱ttl输出，具有有效的上拉和下拉。
The inputs are TTL compatible and outputs are similar to totem pole TTL outputs, with active pull-up and pull-down.
其输入与ttl兼容，输出类似于图腾柱ttl输出，具有有效的上拉和下拉。
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