MC145408

Manufacturer Part NumberMC145408
Description(MC145403 - MC145408) DRIVER / RECEIVERS
ManufacturerMotorola
MC145408 datasheet
 


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MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Drivers/Receivers
EIA–232–E and CCITT V.28
These devices are silicon gate CMOS ICs that combine both the transmitter
and receiver to fulfill the electrical specifications of EIA Standard 232–E and
CCITT V.28. The drivers feature true TTL input compatibility, slew rate limiting
outputs, 300
power–off source impedance, and output typically switching to
within 25% of the supply rails. The receivers can handle up to
presenting 3 to 7 k impedance. Hysteresis in the receivers aid in the reception
of noisy signals. By combining both drivers and receivers in a single CMOS
chip, these devices provide efficient, low–power solutions for both EIA–232–E
and V.28 applications.
These devices offer the following performance features:
Drivers
5 to
12 V Supply Range
300
Power–Off Source Impedance
Output Current Limiting
TTL and CMOS Compatible Inputs
Driver Slew Rate Range Limited to 30 V/ s Maximum
Receivers
25 V Input Range
3 to 7 k Input Impedance
0.8 V of Hysteresis for Enhanced Noise Immunity
TTL and CMOS Compatible Outputs
Available Driver/Receiver Combinations
Device
Drivers
MC145403
3
MC145404
4
MC145405
5
MC145408
5
Alternative EIA–232 devices to consider are:
Three Supply
MC145406 (3 x 3)
REV 2
1/97
TN97010600
MOTOROLA
Motorola, Inc. 1997
4
DataSheet
U
.com
25 V while
Receivers
Figure
No. of Pins
5
1
20
4
2
20
3
3
20
5
4
24
Single Supply
MC145407 (3 x 3)
MC145705 (2 x 3) with Power Down
MC145706 (3 x 2) with Power Down
MC145707 (3 x 3) with Power Down
Order this document
by MC145403/D
MC145403
MC145404
MC145405
MC145408
P SUFFIX
PLASTIC DIP
CASE 738
20
1
P SUFFIX
PLASTIC DIP
CASE 724
24
1
DW SUFFIX
SOG PACKAGE
20
CASE 751D
1
DW SUFFIX
SOG PACKAGE
24
CASE 751E
1
SD SUFFIX
SSOP
CASE 940B
20
1
ORDERING INFORMATION
MC145403P
Plastic DIP
MC145404P
Plastic DIP
MC145405P
Plastic DIP
MC145408P
Plastic DIP
MC145403DW
SOG Package
MC145404DW
SOG Package
MC145405DW
SOG Package
MC145408DW
SOG Package
MC145405SD
SSOP
MC145403 MC145404 MC145405 MC145408
1

MC145408 Summary of contents

  • Page 1

    ... SOG PACKAGE 24 CASE 751E 1 SD SUFFIX SSOP CASE 940B 20 1 ORDERING INFORMATION MC145403P Plastic DIP MC145404P Plastic DIP MC145405P Plastic DIP MC145408P Plastic DIP MC145403DW SOG Package MC145404DW SOG Package MC145405DW SOG Package MC145408DW SOG Package MC145405SD SSOP MC145403 MC145404 MC145405 MC145408 1 ...

  • Page 2

    ... Rx5 R DO5 9 12 Tx3 D DI3 GND RECEIVER V DD ESD PROTECTION 5 MC145403 MC145404 MC145405 MC145408 2 4 DataSheet U .com PIN ASSIGNMENTS (DIP, SOG, AND SSOP) MC145404 4 DRIVERS/4 RECEIVERS 5 DRIVERS/3 RECEIVERS Rx1 DO1 Rx1 ...

  • Page 3

    ... I SS — – 400 – 600 I CC — 110 200 10%) Symbol Min Typ Max V on 1.35 1.8 2.35 V off 0.75 1 1.25 V hys 0.6 0.8 — 5 4.9 4.9 — 3.8 4.3 — — 0.02 0.5 — 0.5 0.7 MC145403 MC145404 MC145405 MC145408 V DD Unit V A Unit ...

  • Page 4

    ... 2500 – Receivers ( pF) Propagation Delay Time Low–to–High High–to–Low Output Rise Time Output Fall Time MC145403 MC145404 MC145405 MC145408 4 4 DataSheet U .com Characteristic DI1 – DI1 – Tx1 – ...

  • Page 5

    ... Figure 3. Slew Rate Characteristics The most negative power supply pin, which is typically – 5 These are the EIA–232–E receive signal inputs. A voltage These are the receiver digital output pins which swing from MC145403 MC145404 MC145405 MC145408 + 3 V – SLH ...

  • Page 6

    ... V CC pin to the V DD pin when V DD < approximately 0 greater. This high current condition can exist for a short period of time during power up/down. Additionally, if the + 12 V supply is switched MC145403 MC145404 MC145405 MC145408 6 4 DataSheet U ...

  • Page 7

    ... C 0.145 0.175 D 0.015 0.020 NOTE 1 E 0.050 BSC M F 0.040 0.060 G 0.100 BSC J 0.007 0.012 K 0.110 0.140 0.300 BSC 0.020 0.040 MC145403 MC145404 MC145405 MC145408 MILLIMETERS MIN MAX 25.66 27.17 6.10 6.60 3.81 4.57 0.39 0.55 1.27 BSC 1.27 1.77 2.54 BSC 0.21 0.38 2.80 3.55 7.62 BSC 0 15 0.51 1.01 MIN MAX 32.13 6.35 6.85 3.69 4.44 0.38 0.51 1.27 BSC 1.02 1 ...

  • Page 8

    ... D 20X 0.010 (0.25) G 18X 24X 0.010 (0.25) –T– SEATING PLANE 22X MC145403 MC145404 MC145405 MC145408 8 4 DataSheet U .com DW SUFFIX SOG PACKAGE CASE 751D–04 11 –B– P 10X 0.010 (0.25 SEATING –T– ...

  • Page 9

    ... K 0.25 0.38 0.010 K1 0.25 0.33 0.010 L 7.65 7.90 0.301 are registered trademarks of Motorola, Inc. Motorola, Inc Equal Mfax is a trademark of Motorola, Inc. MC145403 MC145404 MC145405 MC145408 INCHES MIN MAX 0.249 0.212 0.078 0.008 0.037 0.026 BSC 0.035 0.008 0.006 0.015 0.013 0.311 ...