IN145403 IN145404 IN145405 IN145408

1

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 a power-off source impedance, and output typically

switching to within 25% of the supply rails. The receivers can handle up to ± 25V while presenting 3 to

7 kn 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:

• ± 5 to ± 12 V Supply Range

• 300 Q Power-Off Source Impedance

• Output Current Limiting

• TTL and CMOS Compatible Inputs

•

Driver Slew Rate Range Limited to 30 V/

µs

Maximum

• ± 25V Input Range

• 3 to 7 kn Input Impedance

• 0.8V of Hysteresis for Enhanced Noise Immunity

• TTL and CMOS Compatible Outputs

• Available Driver/Receiver Combinations

Device

Drivers

Receivers

Figure

No. ot Pins

IN145403

3

5

1

20

IN145404

4

4

2

20

IN145405

5

3

3

20

IN145408

5

5

4

24

IN145403

IN145404

IN145405

IN145408

3 DRIVERS/5 RECEIVERS

4 DRIVERS/4 RECEIVERS

5 DRIVERS/3 RECEIVERS

5 DRIVERS/5 RECEIVERS