XR88C681J-F Exar Corporation, XR88C681J-F Datasheet - Page 48

• Manufacturer Part Number: XR88C681J-F
• Description: IC UART CMOS DUAL 44PLCC
• Manufacturer: Exar Corporation
• Type: CMOS Dual Channel UARTr

Specifications of XR88C681J-F

• Number Of Channels: 2, DUART
• Package / Case: 44-LCC (J-Lead)
• Features: *
• Fifo's: 1 Byte, 3 Byte
• Voltage - Supply: 5V
• With Parallel Port: Yes
• With Cmos: Yes
• Mounting Type: Surface Mount
• Data Rate: 1 Mbps
• Supply Voltage (max): 5.25 V
• Supply Voltage (min): 4.75 V
• Supply Current: 15 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Operating Supply Voltage: 5 V
• Propagation Delay Time Ns: 400 ns
• No. Of Channels: 2
• Supply Voltage Range: 4.75V To 5.25V
• Operating Temperature Range: -40°C To +85°C
• Digital Ic Case Style: PLCC
• No. Of Pins: 44
• Filter Terminals: SMD
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 1016-1329

Figure 21 and Figure 22 present the 8086 CPU Mode, when operating in the “min” and “max” modes, respectively.
Rev. 2.11
Vcc
INTR
-INTA
HOLD
-DEN
DT/-R
MN/-MX
8086 CPU
Figure 21. Schematic of the 8086 CPU Mode (Min Mode)
AD8 - AD15
AD0 - AD7
M/-IO
ALE
-RD
-WR
48
D
C
D
C
74LS373
74LS373
Q
Q
D0 - D7
A0 - A7
D8 - D15
A8 - A15
-IOR
-MEMR
-IOW
-MEMW