Product Summary

The 74ACT245 is a octal bus transceiver. The 74ACT245 is designed for asynchronous two-way communication between data buses. The control-function implementation minimizes external timing requirements. When the output-enable (OE) is low, the 74ACT245 passes noninverted data from the A bus to the B bus or from the B bus to the A bus, depending upon the logic level at the direction-control (DIR) input. A high on OE disables the device so that the buses are effectively isolated. To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

Parametrics

74ACT245 absolute maximum ratings: (1)Supply voltage range, VCC: –0.5 V to 7 V; (2)Input voltage range, VI: –0.5 V to VCC + 0.5 V; (3)Output voltage range, VO: –0.5 V to VCC + 0.5 V; (4)Input clamp current, IIK (VI < 0 or VI > VCC): ±20 mA; (5)Output clamp current, IOK (VO < 0 or VO > VCC): ±20 mA; (6)Continuous output current, IO (VO = 0 to VCC): ±50 mA; (7)Continuous current through VCC or GND: ±200 mA; (8)Package thermal impedance, θJA DB package: 70℃/W, DW package: 58℃/W, N package: 69℃/W, NS package: 60℃/W, PW package: 83℃/W; (9)Storage temperature range, Tstg: –65℃ to 150℃.

Features

74ACT245 features: (1)4.5-V to 5.5-V VCC Operation; (2)Inputs Accept Voltages to 5.5 V; (3)Max tpd of 8 ns at 5 V; (4)Inputs Are TTL-Voltage Compatible.

Diagrams

74ACT245 pin connection

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
74ACT245
74ACT245

Other


Data Sheet

Negotiable 
74ACT245B
74ACT245B

STMicroelectronics

Bus Transceivers Octal Bus Tranceiver

Data Sheet

Negotiable 
74ACT245MSAX
74ACT245MSAX

Fairchild Semiconductor

Bus Transceivers Octal Bidir Trans

Data Sheet

Negotiable 
74ACT245MTCX
74ACT245MTCX

Fairchild Semiconductor

Bus Transceivers Octal Bidir Trans

Data Sheet

0-1: $0.25
1-25: $0.20
25-100: $0.16
100-250: $0.14
74ACT245SC_NL
74ACT245SC_NL


IC TRANSCEIVER 3-ST 8BIT 20SOIC

Data Sheet

Negotiable 
74ACT245SC_Q
74ACT245SC_Q

Fairchild Semiconductor

Bus Transceivers Octal Bidir Trans

Data Sheet

Negotiable 
74ACT245SJ
74ACT245SJ

Fairchild Semiconductor

Bus Transceivers Octal Bidir Trans

Data Sheet

0-1: $0.39
1-25: $0.31
25-100: $0.26
100-250: $0.23
74ACT245SJX
74ACT245SJX

Fairchild Semiconductor

Bus Transceivers Octal Bidir Trans

Data Sheet

0-1: $0.40
1-25: $0.31
25-100: $0.27
100-250: $0.23