August 2008 Rev 4 1/19
19
ST6G3238E
Dual supply level translator for SD / MiniSD / T-Flash
with ±8 kV contact discharge ESD protection
Features
■ High speed: t
PD
= 4.4 ns (typ.) at T
A
= 85 °C
V
CCB
= 2.7 V; V
CCA
= 1.8 V
■ Low power dissipation:
I
CCA
= I
CCB
= 5 µA (max.) at T
A
= 85 °C
■ Balanced propagation delays: T
PLH
≈ T
PHL
■
Power-down protection on inputs and outputs
■ 26 Ω series resistor on A side
■ EMI filter on B side
■ Integrated pull-up and pull-down resistor on B
side
■ Operating voltage range:
–V
CCA
(opr) = 1.4 V to V
CCB
–V
CCB
(opr) = 1.4 V to 3.6 V
■ Latch-up performance exceeds 500 mA
(JESD17)
■ ESD protection for card side (B port, CD and
WP pins) ±8 kV, IEC 61000-4-2 ESD or contact
discharge:
HBM > ±15 kV (MIL STD 883 method 3015)
■ ESD protection for A-port:
HBM > ±2 kV (MIL STD 883 method 3015)
■ RoHS compliant for µTFBGA25 package
Description
The ST6G3238E 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 C
2
MOS technology. Designed
for use as an interface between a 3.3 V bus and a
2.5 V or 1.8 V bus in a mixed 3.3 V/1.8 V, 3.3
V/2.5 V and 2.5 V/1.8 V supply systems, it
achieves high speed operation while maintaining
the CMOS low power dissipation. The A port is
designed to track V
CCA
. The B port is designed to
track V
CCB
.
This device 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 3 V bus, while the A port
interfaces with the 2.5 V and 1.8 V bus.
All inputs are equipped with circuits to protect
against static discharge, giving them ±2 kV (on A-
side except CD and WP pins) and ±15 kV (on B
side, CD and WP pins) ESD immunity and
transient excess voltage. See the section on
integrated ESD protection and resistors for more
information.
µTFBGA25TSSOP24
Table 1. Device summary
Order code Package Packaging
ST6G3238ETTR TSSOP24 Tape and reel
ST6G3238ETBR µTFBGA25 Tape and reel
www.st.com
Obsolete Product(s) - Obsolete Product(s)
