SP301CS Exar Corporation, SP301CS Datasheet
SP301CS
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SP301CS Summary of contents
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Corporation SIGNAL PROCESSING EXCELLENCE RS-232/RS-422 Line Drivers/Receivers RS-232 and RS-422 on One Chip Multiple Drivers and Receivers Software-selectable Modes Loopback for Self-Testing Short-circuit Protected 24-pin Single-width DIP or SOIC Package DESCRIPTION… The SP301 and SP302 are proprietary single-chip devices that ...
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SPECIFICATIONS ( and nominal supply voltages unless otherwise noted) MIN A MAX PARAMETER MIN. RS-232 DRIVER TTL Input Level 2.0 IH High Level Output +5.0 Low Level Output Short Circuit Current Loopback Output Voltage ...
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Notes Loop-back mode 2. Only one output drive pin per package will be shorted at any time 3. From 10% to 90% of steady-state 4. This is an absolute maximum rating; normal operating levels are V 5. Outputs ...
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PIN ASSIGNMENTS V (+12V RIA 2 23 N.C. 2 RIA 3 22 ROA 1 TOA 4 21 N.C. 2 TOA 5 20 TIA 1 SELECT SELECT N.C. TOB 8 ...
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SP301/302 3.3kΩ V GND EE 3.3kΩ 2N2222 SP301/302 3.3k Ω V GND SP301/302 GND V 3.3k Ω ...
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SP301/302 from ground in the power- off condition. With V turned on, the transistor DD switch is on, connecting ground (GND) for the device to the circuit ground power-off condition, this transistor is switched off, thus ...
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FIGURE 3: SP301 CONTROL LOGIC CONFIGURATION SELECTION LOGIC VALUE SELECT A: 0 SELECT B: 0 NON– LOOPBACK RIA ROA ( TOA TIA 1 RIB ROB 1 TOB TIB 1 LOOPBACK (LB=0) RIA ROA 1 TOA* TIA 1 ...
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FIGURE 4: SP302 CONTROL LOGIC CONFIGURATION SELECTION LOGIC VALUE SELECT A: 0 SELECT B: 0 RIA ROA NON– LOOPBACK RIA ROA ( TOA TIA 1 1 TOA TIA 2 2 RIB ROB 2 2 ...
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FIGURE 5: SP301 CONFIGURATIONS Two-Channel Full Duplex RS-232 Two independent channels of RS-232 line driver and two channels of RS-232 receiver. TIA TIB RS-232 LINE DRIVERS RS-232 RECEIVERS ROA ROB SELECT SELECT ...
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FIGURE 6: SP301 CONFIGURATIONS One-Channel Full Duplex RS-232 & One-Channel Full Duplex RS-422 Opposite Drivers A single RS-232 line driver and receiver, and a single RS-422 line driver and receiver. At first glance, this is the same configuration as that ...
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FIGURE 7: SP302 CONFIGURATIONS Four-Channel Duplex RS-232 Four independent channels of RS-232 line driver and four channels of RS-232 receiver. TIA TOA 1 1 TIA TOA 2 2 TIB TOB 1 1 TIB TOB 2 2 RS-232 LINE DRIVERS RS-232 ...
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FIGURE 8: SP302 CONFIGURATIONS Two-Channel Duplex RS-232 & One-Channel Duplex RS-422 Opposite Drivers Two RS-232 line drivers and receivers, and a single RS-422 line driver and receiver. At first glance, this is the same configuration in Figure 7. Note however ...
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LOOPBACK Both the SP301 and SP302 have a function called loopback, which is essentially a chip self-test. How- ever, by connecting system test loops with the inputs and outputs of the SP301/302, a system-level diag- nostic can be run on ...
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V to ground. Receiver out- EE puts are left ...
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SP302 CONFIGURATIONS IN LOOPBACK MODE Four-Channel Duplex RS-232 TOA TIA 1 10k 10k RS-232 LINE DRIVER RS-232 RECEIVER ROA RIA 1 TIA TOA 2 10k 10k RS-232 LINE DRIVER RS-232 RECEIVER ROA RIA 2 TOB TIB 1 10k 10k RS-232 ...
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SP302 CONFIGURATIONS IN LOOPBACK MODE Two-Channel Duplex RS-232 & One-Channel Duplex RS-422 Opposite Drivers TIB TOB 2 TIB TOB 1 10k 10k RS-232 LINE DRIVERS RS-232 RECEIVERS ROB RIB 2 ROB RIB 1 10k V EE 10k TOA TIA 1 ...
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... Max # of Duplex Channels Model RS232 RS422 SP301CS .......... 2 ........................ 2 ............. +70 C .......................... 24-pin single–width plastic DIP SP301CT .......... 2 ........................ 2 ............. +70 C ........................................................ 28-pin SOIC SP301ES .......... 2 ........................ 2 ......... - +85 C .......................... 24-pin single–width plastic DIP SP301ET .......... 2 ........................ 2 ......... - +85 C ........................................................ 28-pin SOIC SP302CS .......... 4 ........................ 2 ............. +70 C .......................... 24-pin single–width plastic DIP SP302CT .......... 4 ........................ 2 ............. +70 C ........................................................ 28-pin SOIC SP302ES .......... 4 ........................ 2 ......... - +85 C .......................... 24-pin single– ...
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