74HCT244 Series

Eight-channel 4.5-V to 5.5-V buffers with TTL-compatible CMOS inputs and tri-state outputs

Catalog(14 parts)

Part	Voltage - Supply▲▼	Voltage - Supply▲▼	Logic Type	Output Type	Number of Bits per Element▲▼	Mounting Type	Operating Temperature▲▼	Operating Temperature▲▼	Package / Case	Package / Case▲▼	Current - Output High, Low▲▼	Current - Output High, Low▲▼	Number of Elements▲▼	Supplier Device Package	Package / Case▲▼	Package / Case▲▼
Texas Instruments SN74HCT244NSR Buffer, Non-Inverting 2 Element 4 Bit per Element 3-State Output 20-SO	5.5 V	4.5 V	Buffer, Non-Inverting	3-State	4 ul	Surface Mount	85 °C	-40 °C	20-SOIC	0.0052999998442828655 m, 0.005308600142598152 m	0.006000000052154064 A	0.006000000052154064 A	2 ul	20-SO
Texas Instruments CD74HCT244M Buffer, Non-Inverting 2 Element 4 Bit per Element 3-State Output 20-SOIC	5.5 V	4.5 V	Buffer, Non-Inverting	3-State	4 ul	Surface Mount	125 °C	-55 °C	20-SOIC	0.007493000011891127 m, 0.007499999832361937 m	0.006000000052154064 A	0.006000000052154064 A	2 ul	20-SOIC
Texas Instruments SN74HCT244QPWREP Buffer, Non-Inverting 2 Element 4 Bit per Element 3-State Output 20-TSSOP	5.5 V	4.5 V	Buffer, Non-Inverting	3-State	4 ul	Surface Mount	125 °C	-40 °C	20-TSSOP	0.004394200164824724 m	0.006000000052154064 A	0.006000000052154064 A	2 ul	20-TSSOP	0.004399999976158142 m
Texas Instruments CD74HCT244ME4 Buffer, Non-Inverting 2 Element 4 Bit per Element 3-State Output 20-SOIC	5.5 V	4.5 V	Buffer, Non-Inverting	3-State	4 ul	Surface Mount	125 °C	-55 °C	20-SOIC	0.007493000011891127 m, 0.007499999832361937 m	0.006000000052154064 A	0.006000000052154064 A	2 ul	20-SOIC
Texas Instruments SN74HCT244QPWRQ1 Buffer, Non-Inverting 2 Element 4 Bit per Element 3-State Output 20-TSSOP	5.5 V	4.5 V	Buffer, Non-Inverting	3-State	4 ul	Surface Mount	125 °C	-40 °C	20-TSSOP	0.004394200164824724 m	0.006000000052154064 A	0.006000000052154064 A	2 ul	20-TSSOP	0.004399999976158142 m
Texas Instruments CD74HCT244E Buffer, Non-Inverting 2 Element 4 Bit per Element 3-State Output 20-PDIP	5.5 V	4.5 V	Buffer, Non-Inverting	3-State	4 ul	Through Hole	125 °C	-55 °C	20-DIP		0.006000000052154064 A	0.006000000052154064 A	2 ul	20-PDIP	0.007619999814778566 m	0.007619999814778566 m
Texas Instruments SN74HCT244DWG4 Buffer, Non-Inverting 2 Element 4 Bit per Element 3-State Output 20-SOIC	5.5 V	4.5 V	Buffer, Non-Inverting	3-State	4 ul	Surface Mount	85 °C	-40 °C	20-SOIC	0.007493000011891127 m, 0.007499999832361937 m	0.006000000052154064 A	0.006000000052154064 A	2 ul	20-SOIC
Texas Instruments SN74HCT244DWRE4 Buffer, Non-Inverting 2 Element 4 Bit per Element 3-State Output 20-SOIC	5.5 V	4.5 V	Buffer, Non-Inverting	3-State	4 ul	Surface Mount	85 °C	-40 °C	20-SOIC	0.007493000011891127 m, 0.007499999832361937 m	0.006000000052154064 A	0.006000000052154064 A	2 ul	20-SOIC
Texas Instruments SN74HCT244NSRG4 Buffer, Non-Inverting 2 Element 4 Bit per Element 3-State Output 20-SO	5.5 V	4.5 V	Buffer, Non-Inverting	3-State	4 ul	Surface Mount	85 °C	-40 °C	20-SOIC	0.0052999998442828655 m, 0.005308600142598152 m	0.006000000052154064 A	0.006000000052154064 A	2 ul	20-SO
Texas Instruments SN74HCT244PWE4 Buffer, Non-Inverting 2 Element 4 Bit per Element 3-State Output 20-TSSOP	5.5 V	4.5 V	Buffer, Non-Inverting	3-State	4 ul	Surface Mount	85 °C	-40 °C	20-TSSOP	0.004394200164824724 m	0.006000000052154064 A	0.006000000052154064 A	2 ul	20-TSSOP	0.004399999976158142 m
Texas Instruments SN74HCT244APWR Buffer, Non-Inverting 2 Element 4 Bit per Element 3-State Output 20-TSSOP	5.5 V	4.5 V	Buffer, Non-Inverting	3-State	4 ul	Surface Mount	85 °C	-40 °C	20-TSSOP	0.004394200164824724 m	0.006000000052154064 A	0.006000000052154064 A	2 ul	20-TSSOP	0.004399999976158142 m
Texas Instruments SN74HCT244N Buffer, Non-Inverting 2 Element 4 Bit per Element 3-State Output 20-PDIP	5.5 V	4.5 V	Buffer, Non-Inverting	3-State	4 ul	Through Hole	85 °C	-40 °C	20-DIP		0.006000000052154064 A	0.006000000052154064 A	2 ul	20-PDIP	0.007619999814778566 m	0.007619999814778566 m
Texas Instruments SN74HCT244PWG4 Buffer, Non-Inverting 2 Element 4 Bit per Element 3-State Output 20-TSSOP	5.5 V	4.5 V	Buffer, Non-Inverting	3-State	4 ul	Surface Mount	85 °C	-40 °C	20-TSSOP	0.004394200164824724 m	0.006000000052154064 A	0.006000000052154064 A	2 ul	20-TSSOP	0.004399999976158142 m
Texas Instruments SN74HCT244DWR Buffer, Non-Inverting 2 Element 4 Bit per Element 3-State Output 20-SOIC	5.5 V	4.5 V	Buffer, Non-Inverting	3-State	4 ul	Surface Mount	85 °C	-40 °C	20-SOIC	0.007493000011891127 m, 0.007499999832361937 m	0.006000000052154064 A	0.006000000052154064 A	2 ul	20-SOIC

Key Features

• Operating voltage range of 4.5V to 5.5VHigh-current outputs drive up to 15 LSTTL loadsLow power consumption: 80µA maximum ICCTypical tpd = 13ns±6mA output drive at 5VLow input current of 1µA maximumInputs are TTL-voltage compatible3-state outputs drive bus lines and buffer memory address registersOperating voltage range of 4.5V to 5.5VHigh-current outputs drive up to 15 LSTTL loadsLow power consumption: 80µA maximum ICCTypical tpd = 13ns±6mA output drive at 5VLow input current of 1µA maximumInputs are TTL-voltage compatible3-state outputs drive bus lines and buffer memory address registers

Description

These octal buffers and line drivers are designed specifically to improve both the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. The SNx4HCT244 devices are organized as two 4-bit buffers or drivers with separate output-enable (OE) inputs. When OE is low, the device passes non inverted data from the A inputs to the Y outputs. When OE is high, the outputs are in the high-impedance state. These octal buffers and line drivers are designed specifically to improve both the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. The SNx4HCT244 devices are organized as two 4-bit buffers or drivers with separate output-enable (OE) inputs. When OE is low, the device passes non inverted data from the A inputs to the Y outputs. When OE is high, the outputs are in the high-impedance state.