English
Language : 

LP3929 Datasheet, PDF (4/14 Pages) National Semiconductor (TI) – High Speed Bi-Directional Level Shifter and Ultra Low-Dropout CMOS Voltage Regulator and Line
◁
Pin Descriptions
Pin Name
D0_A
D1_A
D2_A
D3_A
CMD_A
CLK_A
fCLK_A
DIR_0
DIR_1-3
CMD_DIR
EN
D0_B
D1_B
D2_B
D3_B
CMD_B
CLK_B
VBAT
VDDA
VDDB
VSS
VSS
WP
CD
micro SMD
Bump Identifier
D1
E1
A1
B1
D2
C1
E2
A3
Port / Direction
Host / Bidirectional
Host / Bidirectional
Host / Bidirectional
Host / Bidirectional
Host / Bidirectional
Host / Input
Host / Output
Host / Input
E3
Host / Input
A2
Host / Input
C2
Host / Input
D5
Card / Bidirectional
E5
Card / Bidirectional
A5
Card / Bidirectional
B5
Card / Bidirectional
D4
Card / Bidirectional
C5
Card / Output
A4
Host / Input
B3
Host / Input
B4
Card / Output
C3
C4
E4
Host / Card Input
D3
Host / Card Input
Type
Push-Pull
Push-Pull
Push-Pull
Push-Pull
Push-Pull
High Z
Push-Pull
High Z
High Z
High Z
High Z
Push-Pull
Push-Pull
Push-Pull
Push-Pull
Push-Pull
Push-Pull
Power
Power
Power
Pull-up
Pull-up
Function
1.8 V I/O Channel (Note 14)
1.8 V I/O Channel (Note 14)
1.8 V I/O Channel (Note 14)
1.8 V I/O Channel (Note 14)
1.8 V I/O Channel (Note 14)
1.8 V Input CLK Channel (Note 14)
1.8 V Output CLK Channel
1.8 V Input Direction Control D0 Channel:
VDDA = A → B Direction (Write),
VSS = B → A Direction (Read)
1.8 V Input Direction Control D1-D3 Channel:
VDDA = A → B Direction (Write),
VSS = B → A Direction (Read)
1.8 V Input Direction Control CMD Channel:
VDDA = A → B Direction (Write),
VSS = B → A Direction (Read)
Device Enable with high impedance pull-down resistor (200
kΩ):
VDDA = Device Active (on),
VSS = Device Disabled (off)
2.85 V I/O Channel with high impedance pull-up to VDDB
(70 kΩ)
2.85 V I/O Channel with high impedance pull-up to VDDB
(70 kΩ)
2.85 V I/O Channel with high impedance pull-up to VDDB
(70 kΩ)
2.85 V I/O Channel with high impedance pull-down to VSS
(470 kΩ)
2.85 V I/O Channel with high impedance pull-up to VDDB
(15 kΩ)
2.85 V Output CLK Channel
3.05 V to 5.5 V
1.71 V to 1.92 V, 1.8 V (typ)
2.85 V (LDO output)
Ground
Ground
Pull-up to VDDA (100 kΩ)
Pull-up to VDDA (100 kΩ)
www.national.com
4
 ▷