gtl2000 NXP Semiconductors, gtl2000 Datasheet - Page 4

• Manufacturer Part Number: gtl2000
• Description: 22-bit Gtl Processor Voltage Clamp
• Manufacturer: NXP Semiconductors

Philips Semiconductors
APPLICATIONS
Bi-directional translation
For the bi-directional clamping configuration, higher voltage to lower voltage or lower voltage to higher voltage, the G
connected to D
recommended. The processor output can be totem pole or open drain (pull up resistors may be required) and the chipset output can be totem
pole or open drain (pull up resistors are required to pull the Dn outputs to V
uni-directional or the outputs must be 3-statable and the outputs must be controlled by some direction control mechanism to prevent high to low
contentions in either direction. If both outputs are open drain, no direction control is needed. The opposite side of the reference transistor (S
is connected to the processor core power supply voltage. When D
and S
has a maximum output voltage equal to V
2003 Apr 01
22-bit bi-directional low voltage translator
REF
is set between1.0 V to V
1.8 V
1.5 V
1.2 V
1.0 V
REF
Figure 1. Bi-directional translation to multiple higher voltage levels such as an I
and both pins pulled to high side V
V
CORE
CPU I/O
CC
- 1.5 V, the output of each Sn has a maximum output voltage equal to S
CC
TYPICAL BI-DIRECTIONAL VOLTAGE TRANSLATION
.
CC
through a pull-up resistor (typically 200 kΩ). A filter capacitor on D
S
GND
GTL2002
S1
S2
S3
S4
S5
Sn
REF
10 BIT GTL2010 OR
22 BIT GTL2000
SIZE BY USING
REF
INCREASE BIT
G
D
REF
REF
D1
D2
D3
D4
D5
Dn
is connected through a 200 kΩ resistor to a 3.3 V to 5.5 V V
4
CC
). However, if either output is totem pole, data must be
200 KΩ
CHIPSET I/O
2
C bus application
CHIPSET I/O
REF
V
V
CC
CC
and the output of each Dn
TOTEM POLE OR
OPEN DRAIN I/O
REF
5 V
3.3 V
input must be
GTL2000
REF
is
CC
Product data
SA00642
supply
REF
)