DIO74557

www.dioo.com

© 2024 Dioo Microcircuits Co.,Ltd. Jiangsu

DIO74557• Rev. 1.5

- 5 -

Electrical Characteristics

1.65 V ≤ VCCB ≤ 3.6 V; 1.08 V ≤ VCCA ≤ 1.95 V; TA = -40°C to +85°C; typical values are at 25°C, unless otherwise specified.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Supplies

VCCA

Supply voltage

1.08

1.95

V

ICCA

Supply current

Operating mode;

fCLK_HOST = 1 MHz; EN = VCCA

5

10

μA

Quiescent current; EN = VCCA

0.01

1

μA

Shutdown mode; EN = GND

1

μA

VCCB

SIM supply voltage

1.65

3.6

V

ICCB

SIM supply current

Quiescent current; EN = VCCA

3.6

6.0

μA

Automatic enable feature: VCCB

VCCB_EN

Enable voltage level

VCCA ≥ 1.0 V, VCCB rising edge

1.65

V

VCCB_DIS

Disable voltage level

VCCA ≥ 1.0 V, VCCB falling edge

1.35

V

ΔVCCBen

VCCBen hysteresis voltage

100

mV

Hardware enable pin

VIH

High-level input voltage

EN pin threshold

0.7 × VCCA

VCCA + 0.3

V

VIL

Low-level input voltage

EN pin threshold

-0.15

0.3 × VCCA

V

Level shifter

VIH

High-level input voltage

IO_HOST, RST_HOST, CLK_ HOST

0.7 × VCCA

VCCA + 0.3

V

IO_SIM

0.7 × VCCB

VCCB + 0.3

V

VIL

Low-level input voltage

IO_HOST, RST_HOST, CLK_ HOST

-0.15

0.3 × VCCA

V

IO_SIM

-0.15

0.3 × VCCB

V

RPU

Pull-up resistance

IO_SIM connected to VCCB

4

6

8

kΩ

IO_HOST connected to VCCA

3.5

5

6.5

kΩ

VOH

High-level output voltage

(See Figure 2)

RST_SIM, CLK_SIM; IOH = -1 mA

0.85 × VCCB

VCCB + 0.3

V

IO_SIM; IOH = -10 μA

0.85 × VCCB

VCCB + 0.3

V

IO_HOST; IOH = -10 μA

0.85 × VCCA

VCCA+ 0.3

V

VOL

Low-level output voltage

(See Figure 2)

RST_SIM, CLK_SIM; IOL = 1 mA

0

0.12 × VCCB

V

IO_SIM; IOL = 1 mA

0

0.12 × VCCB

V

IO_HOST; IOL = 1 mA

0

0.25 × VCCA

V

RPD

Pull-down resistance

CLK_SIM, RST_SIM, IO_SIM; when

EN = 0

400

Ω

EMI filter

RS

Series resistance

IO_SIM[1]

42

Ω