XR88C681J-F Exar Corporation, XR88C681J-F Datasheet - Page 2

• 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

Rev. 2.11
D0 - D7
Buffer
Data
Bus
TXDA
Status Register
TSR
THR
Mode Registers
Channel A
A0 - A3
RXDA
RSR
RHR
Command Decoder
Operation Control
Address Decoder
-RD -WR -CS RESET
CRA
Figure 1. Block Diagram of the XR88C681
CRB
TSR
TXDB
THR
Mode Registers
Status Register
Channel B
RXDB
RHR
RSR
Internal Data Bus
IEI IEO -IACK -INTR
Interrupt Control
MISR
IMR
2
IVR
ISR
State Detectors
Change of
Input Port
IP0 - IP6
IPR
IPCR
ACR
CSRA
Counter/Timer
X1/CLK
Generator
Oscillator
Bit Rate
Timing
Function Select
Output Port
X2
Output Port
OP0 - OP7
CSRB
OPCR
OPR
Logic