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参数资料
| 型号： | MCZ33990EF |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 2/16页 |
| 文件大小： | 0K |
| 描述： | IC TRANSCEIVER J-1850 BUS 8-SOIC |
| 标准包装： | 98 |
| 系列： | * |
| 应用： | * |
| 接口： | * |
| 电源电压： | * |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOICN |
| 包装： | 管件 |
| 安装类型： | 表面贴装 |
Analog Integrated Circuit Device Data
10
Freescale Semiconductor
33990
FUNCTIONAL DESCRIPTION
INTRODUCTION
FUNCTIONAL DESCRIPTION
INTRODUCTION
The 33990 is a serial transceiver device designed to meet
the SAE Standard J-1850 Class B performance for bi-
directional half-duplex communication. The device is
packaged in an economical surface-mount SOIC plastic
package. An internal block diagram of the device is shown in
The 33990 derives its robustness to temperature and
voltage extremes from being built on a SMARTMOS process,
incorporating CMOS logic, bipolar/MOS analog circuitry, and
DMOS power FETs. Though the 33990 was principally
designed for automotive applications requiring SAE J-1850
Class B standards, it is suited for other serial communication
applications. It is parametrically specified over an ambient
temperature range of -40
°C ≤ TA ≤ 125°C and 7.0 V ≤ VBAT ≤
16 V supply. The economical 8-pin SOICN surface mount
plastic package makes the device a cost-effective solution.
FUNCTIONAL PIN DESCRIPTION
Input Power (VBAT Pin)
This is the only required input power source necessary to
operate the 33990. The internal voltage reference of the
33990
will remain fully operational with a minimum of 9.0 V
on this pin. Bus transmissions can continue with battery
voltages down to 5.0 V. The bus output voltage will follow the
battery voltage down and, in doing so, track approximately
1.6 V below the battery voltage. The device will continue to
receive and transmit bus data to the microcontroller with
battery voltages as low as 4.25 V. The pin can withstand
voltages from -16 V to 40 V.
Sleep Input (SLEEP Pin)
This input is used to enable and disable the Class B
transmitter. The Class B receiver is always enabled so long
as adequate VBAT pin voltage is applied. When the SLEEP pin
voltage is 5.0 V, the Class B transmitter is enabled. If this
input is logic low, the Class B transmitter will be disabled and
less than 65 A of current will be drawn by the VBAT pin. The
pin also provides a 5.0 V reference, internal to the device,
used to establish the Rx output level and slew rate times.
Class B Functional Description
The transmitter provides an analog waveshaped 0 V to
7.0 V waveform on the BUS output. It also receives
waveforms and transmits a digital level signal back to a logic
IC. The transmitter can drive up to 32 secondary Class B
transceivers (see Figures 11 and 12). These secondary
nodes may be at ground potentials that are
±2.0 V relative to
the control assembly. Waveshaping will only be maintained
during 2 of the 4 corners when the 0 to
±2.0 V ground
potential difference condition exists. The 33990 is a
secondary node on the Class B bus. Each secondary
transceiver has a 470
±10% pF capacitor on its output for
EMI suppression purposes, as well as a 10.6 k
Ω ±5% pull-
down resistor to ground. The primary node has a 3300
±10%
pF capacitor on its output for EMI suppression, as well as a
1.5 k
Ω ±5% pull-down resistor to ground. With more than 26
nodes, there is no primary node (see Figure 13). All nodes
will have a 470
±10% pF capacitor and a 10.6 kΩ ±5% pull-
down resistor. No matter how many secondary nodes are on
the Class B bus, the RC time constant of the Class B bus is
maintained at approximately 5.0
μs. The minimum and
maximum capacitance and resistance on the Class B bus is
given by the expressions shown in Table 6.
Figure 11. Minimum Bus Load
Figure 12. Maximum Number of Nodes
3300 pF
1.5 k
Ω
470 pF
10.6 k
Ω
One Primary Node
1.5 k
Ω
470 pF
10.6 k
Ω
Primary Node
442
Ω
24 Secondary Nodes
3300 pF
11280 pF
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MCZ33990EF | 制造商:Freescale Semiconductor 功能描述:TRANCEIVER J-1850 CLASS B 8SOIC |
| MCZ33990EF/R2 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Enhanced Class B Serial Transceiver |
| MCZ33990EFR2 | 功能描述:网络控制器与处理器 IC CLASS B SERIAL TRANS RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
| MCZ33991EG | 功能描述:马达/运动/点火控制器和驱动器 GAUGE DRIVER IC RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
| MCZ33991EGR2 | 功能描述:马达/运动/点火控制器和驱动器 GAUGE DRIVER IC RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube |
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