器件名称:
MC74AC245DW
功能描述:
OCTAL BIDIRECTIONAL TRANSCEIVER WITH 3-STATE INPUTS/OUTPUTS
文件大小:
102.35KB 共12页
简 介:
MC74AC245, MC74ACT245 Octal Bidirectional Transceiver with 3-State Inputs/Outputs The MC74AC245/74ACT245 contains eight non–inverting bidirectional buffers with 3–state outputs and is intended for bus–oriented applications. Current sinking capability is 24 mA at both the A and B ports. The Transmit/Receive (T/R) input determines the direction of data flow through the bidirectional transceiver. Transmit (active–HIGH) enables data from A ports to B ports; Receive (active–LOW) enables data from B ports to A ports. The Output Enable input, when HIGH, disables both A and B ports by placing them in a High Z condition. http://onsemi.com PDIP–20 N SUFFIX CASE 738 20 1 Noninverting Buffers Bidirectional Data Path A and B Outputs Source/Sink 24 mA ′ACT245 Has TTL Compatible Inputs VCC 20 OE 19 B0 18 B1 17 B2 16 B3 15 B4 14 B5 13 B6 12 B7 11 20 1 SO–20 DW SUFFIX CASE 751 20 1 TSSOP–20 DT SUFFIX CASE 948E EIAJ–20 M SUFFIX CASE 967 20 1 ORDERING INFORMATION Device 1 T/R 2 A0 3 A1 4 A2 5 A3 6 A4 7 A5 8 A6 9 A7 10 GND MC74AC245N MC74ACT245N MC74AC245DW MC74AC245DWR2 Package PDIP–20 PDIP–20 SOIC–20 SOIC–20 SOIC–20 SOIC–20 TSSOP–20 Shipping 18 Units/Rail 18 Units/Rail 38 Units/Rail 1000 Tape & Reel 38 Units/Rail 1000 Tape & Reel 75 Units/Rail Figure 1. PIN ASSIGNMENT PIN OE T/R A0–A7 B0–B7 FUNCTION MC74ACT245DW MC74ACT245DWR2 Output Enable Input Transmit/Receive Input Side A 3–State Inputs or 3–State Outputs Side B 3–State Inputs or 3–State Outputs MC74AC245DT MC74AC245DTR2 MC……
