ML4644

Absolute maximum ratings are limits beyond which the ife of the integrated circuit may be impaired. All voltages nless otherwise specified are measured with respect to round.
Power Supply Voltage Range VCC . . . GND 0.3 to +6.0V
Input Current RRSET, All LED Driver Pins . . . . . . . 60mA
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . 150°C
Storage Temperature . . . . . . . . . . . . . . . . 65°C to 150°C
Lead Temperature (Soldering 10 seconds) . . . . . . . 260°C
Thermal Resistance (qJA) . . . . . . . . . . . . . . . . . . . 44°C/W

The ML4644 AUI Multiplexer contains all the necessary rivers/receivers and control logic to implement a 4 port AU when used in conjuction with a transceiver chip hich has a standard 802.3 AUI interface. Several L4644s can be cascaded together to implement an 8 or 2 port MAU or standalone device.

Logic within the ML4644 detects collisions resulting from ultiple DTEs transmitting simultaneously. In addition, ollision signals received from a transceiver attached at he MAU port are propagated to all of the DTE ports. abbering DTEs of ML4644 are prevented from loading down the etwork by an internal jabber timer which disables abbling ports.