ncn4557 ON Semiconductor, ncn4557 Datasheet
ncn4557
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ncn4557 Summary of contents
Page 1
... V/3.0 V Dual SIM/SAM/ Smart Card Power Supply and Level Shifter The NCN4557 is a dual interface analog circuit designed to translate the voltages between SIM, SAM or Smart Cards and a microcontroller (or similar control device). It integrates two LDOs for power conversion and three level shifters per channel allowing the management of two independent chip cards ...
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... SEL1 P3 CRD_I/ RST 10 P1 CLK CRD_I/ I/O CRD_CLKB CRD_RSTB GND CRD_V Figure 1. Typical Interface Application 16 15 CRD_V NCN4557 GND V BAT 4 CRD_V Figure 2. QFN−16 Pinout (Top View) http://onsemi.com 1.8 V/3 V SIM/Smart Card CARD GND ...
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... I NCN4557 V BAT 3 LDO A > 1.8 V/3.0 V/Enable En En I/O DATA DATA DATA I CONTROL LOGIC MUX SEQUENCING Figure 3. NCN4557 Block Diagram http://onsemi.com 3 4 CRD_V A CC CRD_V CRD_CLKA 6 CRD_RSTA 7 CRD_I/ CRD_V ENABLE 12 SEL0 11 SEL1 17 GROUND GND ...
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... PCB ground plane. NCN4557 Description B can not be active when CRD_V A is active and conversely below 1.5 V typical CRD_V A and B are disabled; the NCN4557 comes into can not be active when CRD_V B is active and conversely start−up sequence, or when CRD_V CC A start− ...
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... Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. NCN4557 Characteristics All Other Pins (Note 1) Card Pins ( 14 & ...
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... Electrical parameters are guaranteed only over the declared operating temperature range. Functional operation of the device exceeding these conditions is not implied. Device specification limit values are applied individually under normal operating conditions and not valid simultaneously. NCN4557 Rating & ...
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... Functional operation of the device exceeding these conditions is not implied. Device specification limit values are applied individually under normal operating conditions and not valid simultaneously. 3. All the dynamic specifications (AC specifications) are guaranteed by design over the operating temperature range. NCN4557 Rating Min @ ICRD_rst = − ...
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... Y AXIS LABEL (UNIT) Figure 6. IV Shutdown Current vs 25° 5 BAT Ch4: CRD_RST, Ch3: CRD_CLK, Ch2: CRD_IO, NCN4557 TYPICAL CHARACTERISTICS 1.2 1.0 0.8 0.6 0.4 0.2 0 4.7 5.1 5.5 2.7 3.1 , Figure 5. I BAT 5.0 5.4 5.8 Figure 7. Activation Sequence, Ch1 : CRD_V , DD Ch2 : CRD_IO, Ch4 : CRD_RST, Ch3 : CRD_CLK Figure 8. Automatic Deactivation ...
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... Drop−Out Voltage Regulators capable to supply a current in excess under 1 3.0 V. These voltages are selected according to Table 1. Using the Boolean input ENABLE pin the NCN4557 device can be disabled setting the circuit in a shutdown mode for which the power consumption features values typically in the range of a few tens of nA ...
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... GND LOGIC Figure 10. Basic I/O line Interface 3.0 V). Figure 7 shows the typical NCN4557 activation sequence. About 800 ms after CRD_V voltage value, CRD_IO and CRD_RST are released. CRD_CLK is enabled during the rising slope of the second clock cycle after CRD_IO and CRD_RST are enabled ...
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... Specifications Brochure, BRD8011/D. NCN4557 Shutdown Operating In order to save power or for other purpose required by the application it is possible to put the NCN4557 in a shutdown mode by setting LOW the pin ENABLE. On the other hand the device enters automatically in a shutdown mode when V becomes lower than 1.0 V typically. ...
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... CONDITION CAN NOT VIOLATE 0.2 MM max SPACING BETWEEN LEAD TIP AND FLAG. MILLIMETERS DIM MIN MAX A 0.70 0.80 A1 0.00 0.05 A3 0.20 REF b 0.18 0.30 D 3.00 BSC D2 1.65 1.85 E 3.00 BSC E2 1.65 1.85 e 0.50 BSC K 0.20 −−− L 0.30 0.50 ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative NCN4557/D ...