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74ABT657DB118: 产品描述Bus Transceivers OCTAL XCVR; 产品类别半导体逻辑; 文件大小98KB，共18页; 制造商NXP(恩智浦); 官网地址https://www.nxp.com

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74ABT657DB118概述

Bus Transceivers OCTAL XCVR

74ABT657DB118规格参数

参数名称	属性值
Product Attribute	Attribute Value
制造商 Manufacturer	NXP(恩智浦)
产品种类 Product Category	Bus Transceivers
Logic Family	ABT
Input Level	TTL
Output Level	TTL
输出类型 Output Type	3-State
High Level Output Current	- 32 mA
Low Level Output Current	64 mA
传播延迟时间 Propagation Delay Time	4.1 ns
电源电压-最大 Supply Voltage - Max	5.5 V
电源电压-最小 Supply Voltage - Min	4.5 V
最小工作温度 Minimum Operating Temperature	- 40 C
最大工作温度 Maximum Operating Temperature	+ 85 C
封装 / 箱体 Package / Case	SSOP-24
系列 Packaging	Reel
Function	Bus Transceiver with Parity Checker
高度 Height	1.8 mm
长度 Length	8.4 mm
Number of Circuits	1
产品 Product	BiCMOS
Quiescent Current	20 mA
技术 Technology	BiCMOS
宽度 Width	5.4 mm
安装风格 Mounting Style	SMD/SMT
Number of Channels	8
Supply Current - Max	30 mA
工作电源电压 Operating Supply Voltage	5 V
Polarity	Non-Inverting
工厂包装数量 Factory Pack Quantity	1000
单位重量 Unit Weight	0.007764 oz

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74ABT657

Octal transceiver with parity generator/checker; 3-state

Rev. 03 — 15 March 2010

Product data sheet

1. General description

The 74ABT657 high-performance BiCMOS device combines low static and dynamic

power dissipation with high speed and high output drive.

The 74ABT657 is an octal transceiver featuring non-inverting buffers with 3-state outputs

and an 8-bit parity generator/checker, and is intended for bus-oriented applications. The

buffers have a guaranteed current sinking capability of 64 mA. The Transmit/Receive input

(pin T/R) determines the direction of the data ﬂow through the bidirectional transceivers.

Transmit (active HIGH) enables data from A ports to B ports; Receive (active LOW)

enables data from B ports to A ports.

When Output Enable input (pin OE) is HIGH, both A and B ports are high-impedance. The

parity select input (pin ODD/EVEN) allows the user to generate either an odd or even

parity output, depending on the system. Pin PARITY is an output from the

generator/checker when transmitting from port A to port B (pin T/R = HIGH) and an input

when receiving from port B to port A port (pin T/R = LOW).

In transmit mode (pin T/R = HIGH) port A is polled to determine the number of HIGH

inputs on port A. Pin PARITY output goes to the logic state determined by the setting of

pin ODD/EVEN and by the number of HIGH inputs on port A. For example, if pin

ODD/EVEN is set LOW (even parity) and the number of HIGH inputs on port A is odd, pin

PARITY output goes HIGH, transmitting even parity. If the number of HIGH inputs on port

A is even, pin PARITY output goes LOW, keeping even parity.

In receive mode (pin T/R = LOW) port B is polled to determine the number of HIGH inputs

on port B. If pin ODD/EVEN is LOW (even parity) and the number of HIGH inputs on port

B is:

•

Odd and pin PARITY input is HIGH, pin ERROR is HIGH, indicating no error

•

Even and pin PARITY input is HIGH, pin ERROR goes LOW, indicating an error

2. Features and beneﬁts

Combinational functions in one package

Low static and dynamic power dissipation with high speed and high output drive

Output capability: +64 mA and

−32

Power-up 3-state

Latch-up protection exceeds 500 mA per JESD78B class II level A

ESD protection:

HBM JESD22-A114F exceeds 2000 V

MM JESD22-A115-A exceeds 200 V

74ABT657DB118相似产品对比

	74ABT657DB118	74ABT657D623	74ABT657PW118
描述	Bus Transceivers OCTAL XCVR	Bus Transceivers OCTAL XCVR	Bus Transceivers OCTAL XCVR
Product Attribute	Attribute Value	Attribute Value	Attribute Value
制造商 Manufacturer	NXP(恩智浦)	NXP(恩智浦)	NXP(恩智浦)
产品种类 Product Category	Bus Transceivers	Bus Transceivers	Bus Transceivers
Logic Family	ABT	ABT	ABT
Input Level	TTL	TTL	TTL
Output Level	TTL	TTL	TTL
输出类型 Output Type	3-State	3-State	3-State
High Level Output Current	- 32 mA	- 32 mA	- 32 mA
Low Level Output Current	64 mA	64 mA	64 mA
传播延迟时间 Propagation Delay Time	4.1 ns	4.1 ns	4.1 ns
电源电压-最大 Supply Voltage - Max	5.5 V	5.5 V	5.5 V
电源电压-最小 Supply Voltage - Min	4.5 V	4.5 V	4.5 V
最小工作温度 Minimum Operating Temperature	- 40 C	- 40 C	- 40 C
最大工作温度 Maximum Operating Temperature	+ 85 C	+ 85 C	+ 85 C
封装 / 箱体 Package / Case	SSOP-24	SO-24	TSSOP-24
Function	Bus Transceiver with Parity Checker	Bus Transceiver with Parity Checker	Bus Transceiver with Parity Checker
高度 Height	1.8 mm	2.45 mm	0.95 mm
长度 Length	8.4 mm	15.6 mm	7.9 mm
Number of Circuits	1	1	1
产品 Product	BiCMOS	BiCMOS	BiCMOS
Quiescent Current	20 mA	20 mA	20 mA
技术 Technology	BiCMOS	BiCMOS	BiCMOS
宽度 Width	5.4 mm	7.6 mm	4.5 mm
安装风格 Mounting Style	SMD/SMT	SMD/SMT	SMD/SMT
Number of Channels	8	8	8
Supply Current - Max	30 mA	30 mA	30 mA
工作电源电压 Operating Supply Voltage	5 V	5 V	5 V
Polarity	Non-Inverting	Non-Inverting	Non-Inverting
工厂包装数量 Factory Pack Quantity	1000	1000	2500
单位重量 Unit Weight	0.007764 oz	0.010857 oz	0.007478 oz
系列 Packaging	Reel	Reel	Reel

74ABT657DB118

74ABT657DB118在线购买

74ABT657DB118概述

74ABT657DB118规格参数

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74ABT657DB118相似产品对比

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