ST ST4G3234 User Manual
ST4G3234
4-BIT DUAL SUPPLY BUS BUFFER LEVEL TRANSLATOR
WITH A SIDE SERIES RESISTOR
■ HIGH SPEED: t
= 1.65V; V
V
CCB
■ LOW POWER DISSIPATION:
= I
I
CCA
■ SYMMETRICAL OUTPUT IMPEDANCE:
|I
V
|I
V
■ BALANCED PROPAGATION DELAYS:
t
PLH
■ POWER DOWN PROTECTION ON INPUTS
OHA
CCA
OHA
CCA
| = I
| = I
≅ t
CCB
OLA
= 3.0V; V
OLA
= 2.3V; V
PHL
= 4.4ns (MAX.) at TA=85°C
PD
= 3.0V
CCA
= 5µA(MAX.) at TA=85°C
= 10mA MIN at
= 1.4V to 3.6V
CCB
= 8mA MIN at
= 1.4 to 3.6V)
CCB
AND OUTPUTS
■ 26Ω SERIES RESISTOR ON A SIDE OUTPUTS
■ OPERATING VOLTAGE RANGE:
(OPR) = 1.4V to 3.6V (1.2V Data Retent)
V
CCA
(OPR) = 1.4V to 3.6V (1.2V Data Retent)
V
CCB
■ MAX DATA RATES:
380 Mbps (1.8V to 3.3V translation)
260 Mbps (<1.8V to 3.3V translation)
260 Mbps (Translate to 2.5V)
210 Mbps (Translate to 1.5V)
100 Mbps (Translate to 1.2V)
■ LA TCH-UP PERFORMANCE EXCEEDS
500mA (JESD 17)
■ ESD PERFORMANCE:
HBM > 2000V (MIL STD 883 method 3015);
MM > 200V
■ R
HS Compliant for FLIPCHIP Package
O
FLIPCHIP
Table 1: Order Codes
PACKAGE T & R Comments
FLIPCHIP11 ST4G3234BJR 5000 parts per reel
All inputs are equipped with protection circuits
against static discharge, giving them ESD immunity and transient excess voltage.
Figure 1: Logic Diagram
DESCRIPTION
The ST4G3234 is a dual supply low voltage
CMOS 4-BIT BUS BUFFER level translator
fabricated with sub-micron silicon gate and
five-layer metal wiring C
2
MOS 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, 1.8V/1.4V and 2.5V/1.8V supply
systems, it achieves high speed operation while
maintaining the CMOS low power dissipation.
This IC is intended for one-way asynchronous
communication between data buses. The input
and output power down protections disable the
device when both power supply are down, so that
the buses are effectively isolated.
The input tolerant buff ers allow to translate V
compatible signals and greater signals than V
up/down t o V
CCA
.
CCB
CCB
Rev. 7
1/11May 2005
ST4G3234
Figure 2: Input An d Output Equival e n t Ci rcuit
Table 2: Pin Description
PIN° SYMBOL NAME AND FUNCTION
A1 A4 Data Output
A3 A3 Data Output
A5 A2 Data Output
A7 A1 Data Output
C1 B4 Data Input
C3 B3 Data Input
C5 B2 Data Input
C7 B1 Data Input
B2 GND Ground (0V)
B6 V
B4 V
CCA
CCB
Positive Supply Voltage
Positive Supply Voltage
Figure 3: Pi n C onnect ion (top through view)
2/11
Table 3: Truth Ta ble
ST4G3234
INPUTS Bn (V
Referred) OUTPUTS Bn (V
CCB
Referred)
CCA
LL
HH
Table 4: Absolute Maximum Ratings
Symbol Parameter Value Unit
V
CCA
V
CCB
V
V
V
V
I
I
OK
I
OA
I
CCA
I
CCB
P
T
T
Absolute Maximum Ratings are those value beyond which damage to the device may occur. Functional operation under these conditions is
not implied
Output Supply Voltage
Input Supply Voltage
DC Output Voltage (Power Down Mode: V
OA
DC Input Voltage (Power Down Mode: V
IB
DC Output Voltage -0.5 to V
OA
DC Input Voltage
IB
DC Input Diode Current
IK
CCA=VCCB
CCA=VCCB
=Gnd)
=Gnd)
DC Output Diode Current
DC Output Current
DC V
DC V
Power Dissipation
d
Storage Temperature
stg
Lead Temperature (10 sec)
L
or Ground Current
CCA
or Ground Current
CCB
-0.5 to +4.6 V
-0.5 to +4.6 V
-0.5 to +4.6 V
-0.5 to +4.6 V
+ 0.5
CCA
-0.5 to +4.6 V
− 20 mA
− 50 mA
± 50 mA
± 100 mA
± 100 mA
400 mW
-65 to +150 °C
260 °C
V
Table 5: Recommended Operating Conditions
Symbol Parameter Value Unit
V
CCA
V
CCB
V
V
T
dt/dv
1) VI from 0.8V to 2.0V at V
Supply Voltage
Supply Voltage
Input Voltage (Bn) 0 to V
IB
Output Voltage (An) 0 to V
OA
Operating Temperature
op
Input Rise and Fall Time (note 1) V
= 3.0V
CC
= 3.0 to 3.6V
CCB
= 2.3 to 2.7V
V
CCB
V
= 1.4 to 1.95V
CCB
1.4 to 3.6 V
1.4 to 3.6 V
CCB
CCA
-40 to 85 °C
0 to 10 ns/V
0 to 20 ns/V
0 to 100 ns/V
V
V
3/11
ST4G3234
Table 6: DC Specification
Symbol Parameter
V
V
V
I
I
∆I
IHB
V
ILB
OHA
OLA
I
IB
I
OFF
CCtB
CCtA
CCtB
High Level Input
Voltage (Bn)
Low Level Input
Voltage (Bn)
High Level
Output Voltage
Low Level
Output Voltage
Input Leakage
Current
Power Off
Leakage Current
Quiescent
Supply Current
Quiescent
Supply Current
Maximum
Quiescent
Supply Current /
Input (Bn)
V
CCB
(V)(*)
1.4
1.8
2.5 1.6 1.6
3.3 2.0 2.0
1.4
1.8
2.5 0.7 0.7
3.3 0.8 0.8
1.4
to
3.6V
1.4
to
3.6V
2.7 3.6
1.4 2.7
00VIB=GND to 3.6V
1.4
to
3.6V
1.4
to
3.6V
2.7 3.6
1.95 3.6
1.95 2.7
Test Condition Value
= 25 °C
T
V
CCA
(V)(*)
1.4
to
Min. Typ. Max. Min. Max.
0.65V
0.65V
A
CCB
CCB
3.6V
0.35V
1.4
to
0.35V
3.6V
1.4 IO=-100µA
2.75 I
2.3
1.65
1.4
=-10mA
O
=-8mA
I
O
=-6mA
I
O
I
=-2mA
O
1.2 1.2
2.2 2.2
2.0 2.0
1.4 1.4
1.1 1.1
1.4 IO=100µA
2.75 I
2.3
1.65
1.4
=10mA
O
=8mA
I
O
I
=6mA
O
=2mA
I
O
=V
V
IB
CCB
=3.6V or GND
V
IB
or GND
0.55 0.55
0.30 0.30
0.25 0.25
0.20 0.20
± 0.5 ± 5 µA
± 0.5 ± 5 µA
± 1.0 ± 10 µA
V
=GND to 3.6V
OA
1.4
to
=V
CCB
or GND
V
IB
3.6V
1.4
to
=V
CCB
or GND
V
IB
3.6V
=V
CCB
CCB
- 0.6V
or GND
V
IB
V
=V
IB
CCB
CCB
-40 to 85 °C
0.65V
CCB
0.65V
CCB
0.35V
0.35V
CCB
CCB
Unit
V
V
V
0.2 0.2
V
0.5 5 µA
0.5 5 µA
0.75 mA
(*) VCC range = 3.3±0.3; 2.5 ±0.2V ; 1.8±0.15V
4/11
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