MC74VHC245 Series

Octal Bidirectional Transceiver with 3-STATE Outputs

Catalog

Octal Bidirectional Transceiver with 3-STATE Outputs

Part	Package / Case	Package / Case [y]	Package / Case [y]	Output Type	Current - Output High, Low [custom]	Current - Output High, Low [custom]	Voltage - Supply [Max]	Voltage - Supply [Min]	Operating Temperature [Max]	Operating Temperature [Min]	Supplier Device Package	Mounting Type	Number of Bits per Element	Number of Elements	Package / Case [x]	Package / Case	Package / Case
ON Semiconductor 74VHC245M	20-SOIC	0.295 in	7.5 mm	3-State	8 mA	8 mA	5.5 V	2 V	85 °C	-40 °C	20-SOIC	Surface Mount	8	1
ON Semiconductor 74VHC245MTC	20-TSSOP	4.4 mm		3-State	8 mA	8 mA	5.5 V	2 V	85 °C	-40 °C	20-TSSOP	Surface Mount	8	1	0.173 in
ON Semiconductor 74VHC245MX	20-SOIC	0.295 in	7.5 mm	3-State	8 mA	8 mA	5.5 V	2 V	85 °C	-40 °C	20-SOIC	Surface Mount	8	1
ON Semiconductor MC74VHC245DTR2	20-TSSOP	4.4 mm		3-State	8 mA	8 mA	5.5 V	2 V	85 °C	-40 °C	20-TSSOP	Surface Mount	8	1	0.173 in
ON Semiconductor MC74VHC245DWR2	20-SOIC	0.295 in	7.5 mm	3-State	8 mA	8 mA	5.5 V	2 V	85 °C	-40 °C	20-SOIC	Surface Mount	8	1
ON Semiconductor MC74VHC245DT	20-TSSOP	4.4 mm		3-State	8 mA	8 mA	5.5 V	2 V	85 °C	-40 °C	20-TSSOP	Surface Mount	8	1	0.173 in
ON Semiconductor 74VHC245MTCX	20-TSSOP	4.4 mm		3-State	8 mA	8 mA	5.5 V	2 V	85 °C	-40 °C	20-TSSOP	Surface Mount	8	1	0.173 in
ON Semiconductor MC74VHC245DTR2G	20-TSSOP	4.4 mm		3-State	8 mA	8 mA	5.5 V	2 V	85 °C	-40 °C	20-TSSOP	Surface Mount	8	1	0.173 in
ON Semiconductor MC74VHC245DTG	20-TSSOP	4.4 mm		3-State	8 mA	8 mA	5.5 V	2 V	85 °C	-40 °C	20-TSSOP	Surface Mount	8	1	0.173 in
ON Semiconductor 74VHC245SJ	20-SOIC			3-State	8 mA	8 mA	5.5 V	2 V	85 °C	-40 °C	20-SOP	Surface Mount	8	1		0.209 "	5.3 mm

Catalog

Octal Bidirectional Transceiver with 3-STATE Outputs

Key Features

• High Speed: tPD= 4.0ns (Typ) at VCC= 5V

• Low Power Dissipation: ICC= 4µA (Max) at TA= 25 C

• High Noise Immunity: VNIH= VNIL= 28% VCC

• Power Down Protection Provided on Inputs

• Balanced Propagation Delays

• Designed for 2V to 5.5V Operating Range

• Low Noise: VOLP= 1.2V (Max)

• Pin and Function Compatible with Other Standard Logic Families

• Latchup Performance Exceeds 300mA

• ESD Performance: HBM > 2000V; Machine Model > 200V

• Chip Complexity: 308 FETs or 77 Equivalent GatesAPPLICATION NOTES

• Do not force a signal on an I/O pin when it is an active output,damage may occur.

• All floating (high impedance) input or I/O pins must be fixed bymeans of pull up or pull down resistors or bus terminator ICs.

• A parasitic diode is formed between the bus and VCC terminals.Therefore, the VHC245 cannot be used to interface 5V to 3V systemsdirectly.

• These devices are available in Pb-free package(s). Specifications herein apply to both standard and Pb-free devices. Please see our website at www.onsemi.com for specific Pb-free orderable part numbers, or contact your local ON Semiconductor sales office or representative.

Description

The VHC245 is an advanced high speed CMOS octal bus transceiver fabricated with silicon gate CMOS technology. It achieves high speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissipation. The VHC245 is intended for bidirectional asynchronous communication between data busses. The direction of data transmission is determined by the level of the T/R# input. The enable input can be used to disable the device so that the busses are effectively isolated. All inputs are equipped with protection circuits against static discharge.