Driver/Receiver - LANSDALE Semiconductor
Description
www.
DataSheet4U.
com
ML145406
Driver/Receiver
EIA 232–E and CCITT V.
28 (Formerly RS–232–D)
Legacy Device: Motorola MC145406
The ML145406 is a silicon–gate CMOS IC that combines three drivers and three receivers to fulfill the electrical specifications of standards EIA 232–E and CCITT V .
28.
The drivers feature true TTL input compatibility, slew–rate–limited output, 300–Ω power–off source impedance, and output typically switching to within 25% of the supply rails.
The receivers can handle up to ±25 V while presenting 3 to 7 kΩ impedance.
Hysteresis in the receivers aids reception of noisy signals.
By combining both drivers and receivers in a single CMOS chip, the ML145406 provides efficient, low–power solutions for EIA 232–E and V .
28 applications.
This device offers the following performance features: • Operating Temperature Range = TA –40° to +85°C Drivers • ± 5 V to ±12 V Supply Range • 300–Ω Power–Off Source Impedance • Output Current Limiting • TTL Compatible • Maximum Slew Rate = 30 V/µs Receivers • ± 25 V Input Voltage Range When VDD = 12 V , VSS = – 12 V • 3 to 7 kΩ Input Impedance • Hysteresis on Input Switchpoint
BLOCK DIAGRAM
VDD RECEIVER VDD VCC 15 k + – VSS 1.
0 V Rx2 1.
8 V HYSTERESIS VDD Rx3 DRIVER VCC 300 Tx LEVEL SHIFT + – 1.
4 V DI Tx3 VSS 7 D 10 DI3 GND 6 R 11 DO3 Tx2 DO VCC VDD Rx1 Tx1 1 2 3 4 5 R D R D 16 15 14 13 12 VCC DO1 DI1 DO2 DI2
P DIP 16 = EP PLASTIC CASE 648
16 1
16 1
SO 16W = -5P SOG CASE 751G
CROSS REFERENCE/ORDERING INFORMATION LANSDALE PACKAGE MOTOROLA P DIP 16 SO 16W MC145406P MC145406DW ML145406EP ML145406-6P
Note: Lansdale lead free (Pb) product, as it becomes available, will be identified by a part number prefix change from ML to MLE.
PIN ASSIGNMENT
*
Rx 5.
4 k
8
9
D = DRIVER R = RECEIVER
VSS *Protection circuit
Page 1 of 10
www.
lansdale.
com
Issue A
ML145406
www.
DataSheet4U.
com
LANSDALE Semiconductor, Inc.
MAXIMUM RATINGS (Voltage polarities referenced to GND)
Rating DC Supply Voltages (VDD ≥ VCC) Symbol VDD VSS VCC...
Similar Datasheet
