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PDF ST6G3237 Data sheet ( Hoja de datos )
| Número de pieza | ST6G3237 | |
| Descripción | Dual supply level translator | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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ST6G3237
Dual supply level translator for SD/ MINISD / T-FLASH
Features
■ High speed:
– tPD = 4.4ns (Max.) at TA = 85°C
– VCCB = 3.0V
– VCCA = 2.3V
■ Low power dissipation:
– ICCA = ICCB = 5µA (Max.) at TA = 85°C
■ Balanced propagation delays:
– TPLH ≈ TPHL
■ Power down protections on inputs and outputs
■ 26Ω series resistor on A-Side
■ Operating voltage range:
– VCCA (OPR) = 1.4V to VCCB
– VCCB (OPR) = 1.4V to 3.6V
■ Latch-up performance exceeds 500mA
(JESD17)
■ ESD performance:
– HBM > 2kV (MIL STD 883 method 3015);
■ ROHS compliant for µTFBGA25 package
µTFBGA25
TSSOP20
Description
The ST6G3237 is a dual supply low voltage
CMOS Level Translator for SD/MiniSD/T-Flash
fabricated with sub-micron silicon gate and five-
layer metal wiring C2MOS technology. Designed
for use as an interface between a 3.3V bus and a
2.5V or 1.8V bus in a mixed 3.3V/1.8V, 3.3V/2.5V
and 2.5V/1.8V supply systems, it achieves high
speed operation while maintaining the CMOS low
power dissipation.
The A port is designed to track VCCA. The B port
is designed to track VCCB.
This IC is intended for two-way asynchronous
communication between data buses and the
direction of data transmission is determined by
CMD-dir/DATA0-dir/DAT123-dir inputs. The B-port
interfaces with the 3V bus, the A-port with the
2.5V and 1.8V bus.
All inputs are equipped with protection circuits
against static discharge, giving them ±2kV ESD
immunity and transient excess voltage.
Order codes
Part number
ST6G3237TTR
ST6G3237TBR
Package
TSSOP20
µTFBGA25
Packaging
Tape and reel
Tape and reel
January 2007
Rev 1
1/17
www.st.com
17
1 page  
ST6G3237
Pin settings
2.2 Pin descriptions
Table 2. Pin descriptions
Pin Nº
Pin Nº
µTFBGA25 TSSOP20
Type
A2 12
I
D2 9 I/O
D4 13 I/O
A3 11
I
D1 8 I/O
D5 14 I/O
E3 10
E1
A1
B1
E5
A5
B5
C1
C5
E2
B3
B4
C3, C4
A4, B2, C2,
D3, E4
2
3
4
19
18
17
5
16
6
7
15
1, 20
-
I
I/O
I/O
I/O
I/O
I/O
I/O
I
O
O
-
-
-
-
Side
A-side
A-side
B-Side
A-Side
A-Side
B-Side
A-Side
A-Side
A-Side
A-Side
B-Side
B-Side
B-Side
A-Side
B-Side
A-Side
A-Side
B-Side
-
-
Symbol
Name and function
CMD-dir
CMD.h
CMD
DAT0-dir
DAT0.h
DAT0
DAT123-dir
DAT1.h
DAT2.h
DAT3.h
DAT1
DAT2
DAT3
CLK.h
CLK
CLK-f
VCCA
VCCB
GND
NC
Command direction
HIGH = A to B
LOW = B to A
A-side Command
B-side Command
Data Direction
HIGH = A to B (write)
LOW = B to A (read)
Data Input / Output
Data Input / Output
Data Direction
HIGH = A to B (write)
LOW = B to A (read)
Data Input / Output
Data Input / Output
Data Input / Output
Data Input / Output
Data Input / Output
Data Input / Output
Clock Input
Clock Output
Clock Feedback
Power supply
Power supply
Ground (0V)
No connect
● CMD, Command is a bidirectional line. The host and card drivers are operating in
push-pull.
● DAT0-3, Data lines are bi-directional lines. Host and card drivers are operating in
push-pull mode.
● CLK, Clock is a host to card signal. CLK operates in push-pull mode.
● Feedback (return) Clock is feedback clock signal from level shifter to host for
controlling delays.
5/17
5 Page 
ST6G3237
5 Test circuit
Figure 3. Test circuit
Test circuit
Table 10. Test values
Test
tPLH, tPHL
tPZL, tPLZ (VCC = 3.0 to 3.6V)
tPZL, tPLZ (VCC = 2.3 to 2.7V or VCC = 1.6 to 1.95V)
tPZH, tPHZ
Table 11. Waveform symbol value
Symbol
3.0 to 3.6V
VCC
2.3 to 2.7V
VIH VCC VCC
VM
1.5V
VCC/2
VX
VOL + 0.3V
VOL + 0.15V
VY
VOL - 0.3V
VOL - 0.15V
● CL = 30pF or equivalent (includes jig and probe capacitance)
● RL = R1 = 500Ω or equivalent
● RT = ZOUT of pulse generator (typically 50Ω)
Switch
Open
6V
2VCC
GND
1.65 to 1.95V
VCC
VCC/2
VOL + 0.15V
VOL - 0.15V
11/17
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet ST6G3237.PDF ] | |
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