器件名称: 74HCT244A
功能描述: Octal 3State Noninverting Buffer/Line Driver/Line Receiver with LSTTLCompatible Inputs
文件大小: 113.88KB 共8页
简 介:MC74HCT244A Octal 3State Noninverting Buffer/Line Driver/ Line Receiver with LSTTLCompatible Inputs
HighPerformance SiliconGate CMOS
The MC74HCT244A is identical in pinout to the LS244. This device may be used as a level converter for interfacing TTL or NMOS outputs to HighSpeed CMOS inputs. The HCT244A is an octal noninverting buffer line driver line receiver designed to be used with 3state memory address drivers, clock drivers, and other busoriented systems. The device has noninverted outputs and two activelow output enables. The HCT244A is the noninverting version of the HCT240. See also HCT241.
Features http://onsemi.com
PDIP20 N SUFFIX CASE 738 1 SOIC20W DW SUFFIX CASE 751D 1
Output Drive Capability: 15 LSTTL Loads TTL NMOSCompatible Input Levels Outputs Directly Interface to CMOS, NMOS, and TTL Operating Voltage Range: 4.5 to 5.5 V Low Input Current: 1 mA In Compliance with the Requirements Defined by JEDEC Standard No. 7A Chip Complexity: 112 FETs or 28 Equivalent Gates PbFree Packages are Available
TSSOP20 DT SUFFIX CASE 948E 1
SOEIAJ20 M SUFFIX CASE 967 1
PIN ASSIGNMENT
ENABLE A A1 YB4 A2 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 VCC ENABLE B YA1 B4 YA2 B3 YA3 B2 YA4 B1
A1 A2 A3 A4 B1 B2 B3 B4
2 4 6 8 11 13 15 17
18 16 14 12 9 7 5 3
YA1 YA2 YA3 YA4 YB1 YB2 NONINVERTING OUTPUTS
YB3 A3 YB2 A4 YB1 GND
DATA INPUTS
FUNCTION TABLE
YB3 YB4 Inputs Enable A, Enable B L L H A, B L H X Outputs YA, YB L H Z
1 OUTPUT ENABLE A ENABLES ENABLE B 19
PI……
