9 FN7784.1 March 16, 2012 Time to Shutdown tSHDN (Not" />
參數(shù)資料
型號(hào): ISL32470EIBZ-T7A
廠商: Intersil
文件頁(yè)數(shù): 19/19頁(yè)
文件大?。?/td> 0K
描述: IC TXRX RS485 FAULT PROT 14SOIC
產(chǎn)品培訓(xùn)模塊: Solutions for Industrial Control Applications
標(biāo)準(zhǔn)包裝: 250
類(lèi)型: 收發(fā)器
驅(qū)動(dòng)器/接收器數(shù): 1/1
規(guī)程: RS422,RS485
電源電壓: 4.5 V ~ 5.5 V
安裝類(lèi)型: 表面貼裝
封裝/外殼: 14-SOIC(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 14-SOIC
包裝: 帶卷 (TR)
ISL32470E, ISL32472E, ISL32475E, ISL32478E
9
FN7784.1
March 16, 2012
Time to Shutdown
tSHDN
(Note 11)
Full
60
160
600
ns
Receiver Enable from Shutdown to
Output High
tZH(SHDN) RL = 1k, CL = 15pF, SW = GND (Figure 8),
(Notes 11, 13)
Full
-
2000
ns
Receiver Enable from Shutdown to
Output Low
tZL(SHDN) RL = 1k, CL = 15pF, SW = VCC (Figure 8),
(Notes 11, 13)
Full
-
2000
ns
NOTES:
6. All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to device ground unless otherwise
specified.
7. Supply current specification is valid for loaded drivers when DE = 0V.
8. Applies to peak current. See “Typical Performance Curves” beginning on page 13 for more information.
9. Keep RE = 0 to prevent the device from entering SHDN.
10. The RE signal high time must be short enough (typically <100ns) to prevent the device from entering SHDN.
11. Transceivers are put into shutdown by bringing RE high and DE low. If the inputs are in this state for less than 60ns, the parts are guaranteed not to
enter shutdown. If the inputs are in this state for at least 600ns, the parts are guaranteed to have entered shutdown. See “Low Power Shutdown
12. Keep RE = VCC, and set the DE signal low time >600ns to ensure that the device enters SHDN.
13. Set the RE signal high time >600ns to ensure that the device enters SHDN.
14. Compliance to data sheet limits is assured by one or more methods: production test, characterization and/or design.
15. Tested according to TIA/EIA-485-A, Section 4.2.6 (±80V for 15s at a 1% duty cycle).
16. See “Caution” statement below the “Recommended Operating Conditions” section on page 5.
Test Circuits and Waveforms
FIGURE 3A. VOD AND VOC
FIGURE 3B. VOD AND VOC WITH COMMON MODE LOAD
FIGURE 3. DC DRIVER TEST CIRCUITS
Electrical Specifications Test Conditions: VCC = 4.5V to 5.5V; Unless Otherwise Specified. Typicals are VCC = 5V, TA = +25°C
(Note 6). Boldface limits apply over the operating temperature range, -40°C to +85°C. (Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
TEMP
(°C)
MIN
(Note 14)
TYP
MAX
(Note 14)
UNITS
D
DE
DI
VCC
VOD
VOC
RL/2
Z
Y
D
DE
DI
VCC
VOD
375
Z
Y
VCM
RL/2
VOC
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