Quad Low Power Line Receivers
The MC14C89B and MC14C89AB are low monolithic quad line receivers using bipolar technology, which conform to the EIAâ232âE, EIAâ562 and CCITT V.28 Recommendations. The outputs feature LSTTL and CMOS compatibility for easy interface to +5.0 V digital systems. Internal timeâdomain filtering eliminates the need for external filter capacitors in most cases.
The MC14C89B has an input hysteresis of 0.35 V, while the MC14C89AB hysteresis is 0.95 V. The response control pins allow adjustment of the threshold level if desired. Additionally, an external capacitor may be added for additional noise filtering.
The MC14C89B and MC14C89AB are available in both a 14 pin dualâinâline plastic DIP and SOIC package.
Features:
⢠Low Power Consumption
⢠Meets EIAâ232âE, EIAâ562, and CCITT V.28 Recommendations
⢠TTL/CMOS Compatible Outputs
⢠Standard Power Supply: + 5.0 V ±10%
⢠Pin Equivalent to MC1489, MC1489A, TIâs SN75C189/A, SN75189/A
and National Semiconductorâs DS14C89/A
⢠External Filtering Not Required in Most Cases
⢠Threshold Level Externally Adjustable
⢠Hysteresis: 0.35 V for MC14C89B, 0.95 V for MC14C89AB
⢠Available in Plastic DIP, and Surface Mount Packaging
⢠Operating Ambient Temperature: â40° to +85°C
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