Octal Bus Buffer
MC74VHC244
Octal Bus Buffer
The MC74VHC244 is an advanced high speed CMOS octal bus buffer fabricated with silicon gate...
Description
MC74VHC244
Octal Bus Buffer
The MC74VHC244 is an advanced high speed CMOS octal bus buffer fabricated with silicon gate CMOS technology.
The MC74VHC244 is a noninverting 3−state buffer, and has two active−low output enables. This device is designed to be used with 3−state memory address drivers, etc.
The internal circuit is composed of three stages, including a buffer output which provides high noise immunity and stable output. The inputs tolerate voltages up to 7 V, allowing the interface of 5 V systems to 3 V systems.
High Speed: tPD = 3.9 ns (Typ) at VCC = 5 V Low Power Dissipation: ICC = 4 mA (Max) at TA = 25°C High Noise Immunity: VNIH = VNIL = 28% VCC Power Down Protection Provided on Inputs Balanced Propagation Delays Designed for 2 V to 5.5 V Operating Range Low Noise: VOLP = 0.9 V (Max) Pin and Function Compatible with Other Standard Logic Families Latchup Performance Exceeds 300 mA ESD Performance: Human Body Model > 2000 V
Machine Model > 200 V
Chip Complexity: 136 FETs NLV Prefix for Automotive and Other Applications Requiring
Unique Site and Control Change Requirements; AEC−Q100 Qualified and PPAP Capable
These Devices are Pb−Free and are RoHS Compliant
A1 2
A2 4
A3 6
DATA INPUTS
A4 8 B1 11
B2 13
B3 15
B4 17
18 YA1
16 YA2 14 YA3 12 YA4
NONINVERTING 9 YB1 OUTPUTS 7 YB2
5 YB3
3 YB4
OUTPUT OEA 1 ENABLES OEB 19
Figure 1. Logic Diagram
20 1
20 1
http://onsemi.com
MARKING DIAGRAMS 20
SOIC−20 DW SUFFIX CASE 751D
VHC244 AWLYYWWG
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