STMICROELECTRONICS ST1G3234BBJR

ST1G3234B
1-bit dual supply bus buffer level translator
with A-side series resistor
Features
■
High speed: tPD = 4.0 ns (max.) at TA = 85 °C
VCCB = 1.65 V; VCCA = 3.0 V
■
Low power dissipation:
ICCA = ICCB = 5 μA (max.) at TA = 85 °C
■
Symmetrical output impedance:
|IOHA| = IOLA = 10 mA min at
VCCA = 2.75 V; VCCB = 1.4 to 3.6 V
|IOHA| = IOLA = 6 mA min. at
VCCA = 2.3 V; VCCB = 1.4 to 3.6 V
Flip-Chip 5
■
Balanced propagation delays:
tPLH ≅ tPHL
Description
■
Power-down protection on inputs and outputs
■
26 Ω series resistor on A-side outputs
■
Operating voltage range:
– VCCA (opr.) = 1.4 to 3.6 V
– VCCB (opr.) = 1.4 to 3.6 V
■
Allows partial power-down when VCCA = 0,
device consumes very low quiescent current
The ST1G3234B is a dual supply low voltage
CMOS 1-bit bus buffer level translator fabricated
with sub-micron silicon gate and five-layer metal
wiring C2MOS 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,
1.8 V/1.4 V and 2.5 V/1.8 V supply systems, it
achieves high speed operation while maintaining
the CMOS low power dissipation.
■
Max data rates:
– 380 Mbps (1.8 to 3.3 V translation)
– 260 Mbps (<1.8 to 3.3 V translation)
– 260 Mbps (translates to 2.5 V)
– 210 Mbps (translates to 1.5 V)
■
Latch-up performance exceeds 500 mA
(JESD 17)
The ST1G3234B 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.
■
ESD performance:
HBM > 2000 V (MIL STD 883 method 3015);
MM > 200 V
■
ROHS compliant to Flip-Chip package
Table 1.
The input tolerant buffers allow to translate VCCB
compatible signals and greater signals than VCCB
up/down to VCCA. All inputs are equipped with
protection circuits against static discharge, giving
them ESD immunity and transient excess voltage.
The ST1G3234B is VCCA = 0 V tolerant, achieving
very low current consumption when the VCCA is
grounded.
Device summary
Order code
Package
Comments
ST1G3234BBJR
Flip-Chip 5
4000 parts per reel
December 2007
Rev 2
1/17
www.st.com
17
Contents
ST1G3234B
Contents
1
Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1
Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2
Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3
Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.1
Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5
Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6
Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
7
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
8
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2/17
ST1G3234B
Pin settings
1
Pin settings
1.1
Pin connection
Figure 1.
1.2
Pin connection (top through view)
Pin description
Table 2.
Pin description
Pin number
Symbol
Name and function
A1
A1
Data output (VCCA referred)
C1
B1
Data input (VCCB referred)
B2
GND
Ground (0V)
A3
VCCA
Positive supply voltage
C3
VCCB
Positive supply voltage
3/17
Device summary
2
ST1G3234B
Device summary
Figure 2.
Input equivalent circuit
VCCA
Overvolt.
control
B1
A1
R S = (26Ω)
ESD
protection
GND
GND
GND
CS21760A
Figure 3.
Logic diagram
VCCB
B1
V
CCA
ST1G3234B
A1
CS21000A
Table 3.
4/17
Truth table
Inputs B1 (VCCB referred)
Outputs A1 (VCCA referred)
L
L
H
H
ST1G3234B
3
Maximum rating
Maximum rating
Stressing the device above the rating listed in the “Absolute maximum ratings” table may
cause permanent damage to the device. These are stress ratings only and operation of the
device at these or any other conditions above those indicated in the Operating sections of
this specification is not implied. Exposure to absolute maximum rating conditions for
extended periods may affect device reliability. Refer also to the STMicroelectronics SURE
Program and other relevant quality documents.
Table 4.
Absolute maximum ratings
Symbol
Parameter
Value
Unit
VCCA
Output supply voltage
-0.5 to +4.6
V
VCCB
Input supply voltage
-0.5 to + 4.6
V
VOA
DC output voltage
(power down mode: VCCA=VCCB=Gnd)
-0.5 to +4.6
V
VIB
DC input voltage
(power down mode: VCCA=VCCB=Gnd)
-0.5 to +4.6
V
VOA
DC output voltage
-0.5 to VCCA + 0.5
V
VIB
DC input voltage
-0.5 to + 4.6
V
IIK
DC input diode current
−20
mA
IOK
DC output diode current
−50
mA
IOA
DC output current
± 50
mA
ICCA
DC VCCA or ground current
± 100
mA
ICCB
DC VCCB or ground current
± 100
mA
200
mW
-65 to +150
°C
260
°C
Pd
Power dissipation
Tstg
Storage temperature
TL
Lead temperature (10 sec)
5/17
Maximum rating
3.1
ST1G3234B
Recommended operating conditions
Table 5.
Recommended operating conditions
Symbol
Value
Unit
VCCA
Supply voltage
1.4 to 3.6
V
VCCB
Supply voltage
1.4 to 3.6
V
VIB
Input voltage (B1)
0 to VCCB
V
VOA
Output voltage (A1)
0 to VCCA
V
Top
Operating temperature
-40 to 85
°C
VCCB = 3.0 to 3.6 V
0 to 10
ns/V
VCCB = 2.3 to 2.7 V
0 to 20
ns/V
VCCB = 1.2 to
1.95 V
0 to 100
ns/V
dt/dv
6/17
Parameter
Input rise and fall time
ST1G3234B
Electrical characteristics
4
Electrical characteristics
Table 6.
DC specification
Test condition
Symbol
Parameter
VCCB
(V)(1)
TA = 25 °C
VCCA
(1)
(V)
Min
1.4
VIHB
High level
input voltage
1.8
2.5
Value
1.4 to
3.6
3.3
VOHA
VOLA
IIB
IOFF
Low level input
voltage
High level
output voltage
Low level
output voltage
1.8
0.65 VCCB
0.65 VCCB
0.65 VCCB
1.6
1.6
2.0
2.0
1.4 to
3.6
Unit
Max
V
0.35 VCC
0.35 VCCB
B
0.35 VCC
0.35 VCCB
B
2.5
0.7
0.7
3.3
0.8
0.8
V
1.4
IO = -100 μA
1.2
1.2
2.75
IO = -10 mA
2.2
2.2
2.3
IO = -6 mA
1.8
1.8
1.65
IO = -2 mA
1.4
1.4
1.4
IO = -1 mA
1.1
1.1
1.4
IO = -100 μA
0.20
0.20
2.75
IO = 1 mA
0.40
0.40
2.75
IO = 10 mA
0.55
0.55
2.3
IO = 6 mA
0.40
0.40
1.65
IO = 2 mA
0.25
0.25
1.4
IO = 1 mA
0.20
0.20
2.7
3.6
VIB = VCCB
or GND
± 0.5
±5
μA
1.4
2.7
VIB = 3.6 V
or GND
± 0.5
±5
μA
0
VIB = GND to
3.6 V
VOA = GND
to 3.6 V
± 1.0
± 10
μA
1.4 to
3.6
1.4 to
3.6
Input leakage
current
Power OFF
leakage
current
Min
0.65 VCCB
1.4
VILB
Max
-40 to 85 °C
0
V
V
7/17
Electrical characteristics
Table 6.
ST1G3234B
DC specification (continued)
Test condition
Symbol
ICCB
ICCA
Parameter
Quiescent
supply current
Quiescent
supply current
VCCB
(V)(1)
VCCA
1.4 to
3.6
1.4 to
3.6
1.4 to
3.6
0
1.4 to
3.6
1.4 to
3.6
Value
TA = 25 °C
(1)
(V)
Min
-40 to 85 °C
Max
Min
Unit
Max
VIB = VCCB
or GND
0.5
5
μA
VIB =VCCB or
GND
0.5
5
μA
1. VCC range = 1.8 ± 0.15 V; 2.5 ± 0.2 V; 3.3 ± 0.3 V
Table 7.
AC electrical characteristics
Test condition
Symbol
tPLH tPHL
tPLH tPHL
8/17
Parameter
Propagation delay time B1 to A1
Propagation delay time B1 to A1
VCCB
(V)
VCCA
(V)
2.3 to 3.6
Value
-40 to 85 °C
Min
Max
1.4
2.0
5.0
1.4 to 1.95
1.4
2.0
5.0
2.3 to 3.6
1.65 to 1.95
2.0
4.5
1.4 to 1.95
1.65 to 1.95
2.0
4.8
1.4 to 1.95
2.3 to 2.7
2.0
3.5
1.4 to 1.95
3.0 to 3.6
2.0
3.5
2.3 to 2.7
3.0 to 3.6
1.0
3.0
2.3 to 3.6
1.4
2.0
5.5
1.4 to 1.95
1.4
2.0
5.5
2.3 to 3.6
1.65 to 1.95
2.0
5.0
2.0
5.2
CL = 10 pF
CL = 30 pF
RL = 500 Ω
1.4 to 1.95
1.65 to 1.95
1.4 to 1.95
2.3 to 2.7
2.0
4.0
1.4 to 1.95
3.0 to 3.6
2.0
4.0
2.3 to 2.7
3.0 to 3.6
1.0
3.5
Unit
ns
ns
ST1G3234B
Table 8.
Electrical characteristics
Capacitance characteristics
Test condition
Symbol
CINB
Input capacitance
Output capacitance
CO
Power dissipation
capacitance
CPD
Note:
Parameter
1
Value
TA = 25 °C
VCCB VCCA
(V)
(V)
Min
open open
Typ
Min
Unit
Max
5
pF
pF
2.5
3.3
6
2.5
3.3
27
1.8
3.3
27
1.4
2.5
1.4
1.8
20
3.3
1.8
27
f = 10 MHz
Max
-40 to 85 °C
23
pF
CPD is defined as the value of the device’s internal equivalent capacitance which is
calculated from the operating current consumption without load. (Refer to Test Circuit).
Average current can be obtained by the following equation: ICC(opr) = CPD x VCC x fIN + ICC/4
(per circuit)
9/17
Test circuit
5
ST1G3234B
Test circuit
Figure 4.
Test circuit
V CCB V CCA
R1
Pulse
generator
GND
D.U.T
RT
6V or 2VCC
OPEN
CL
RL
CS14810A
Table 9.
Test circuit
Test
Switch
tPLH, tPHL
Open
CL = 10/30 pF or equivalent (includes jig and probe capacitance)
RL = R1 = 500 Ω or equivalent
RT = ZOUT of pulse generator (typically 50Ω)
10/17
ST1G3234B
6
Waveforms
Waveforms
Table 10.
Waveform symbol value
VCC
Symbol
Figure 5.
3.0 to 3.6 V
2.3 to 2.7 V
1.65 to 1.95 V
VIH
VCC
VCC
VCC
VM
1.5 V
VCC/2
VCC/2
Waveform - propagation delay (f = 1 MHz; 50 % duty cycle)
2.0ns
A1
B1
2.0ns
V IH
90%
VM
VM
10%
OV
t PHL
A1
B1
t PHL
V OH
90%
VM
10%
VM
V OL
CS21770A
11/17
Package mechanical data
7
ST1G3234B
Package mechanical data
In order to meet environmental requirements, ST offers these devices in ECOPACK®
packages. These packages have a Lead-free second level interconnect . The category of
second level interconnect is marked on the package and on the inner box label, in
compliance with JEDEC Standard JESD97. The maximum ratings related to soldering
conditions are also marked on the inner box label. ECOPACK is an ST trademark.
ECOPACK specifications are available at: www.st.com.
Figure 6.
Marking
Distinguishing feature
8V
Y
marking assy
value year
WW
assy
week
A
B
Marking
8VYWW
C
1
2
3
CS2011
12/17
ST1G3234B
Package mechanical data
Figure 7.
Flip-Chip 5 package outline
13/17
Package mechanical data
Table 11.
ST1G3234B
Flip-Chip 5 mechanical data
millimeters
mils
Symbol
Min
Typ
Max
Min
Typ
Max
A
0.585
0.65
0.714
23.0
25.6
28.1
A1
0.21
0.25
0.29
8.3
9.8
11.4
a2
0.40
b
0.265
0.315
0.365
10.4
12.4
14.4
D
1.31
1.36
1.41
51.6
53.5
55.5
D1
E
9.866
0.97
E1
14/17
15.7
1.02
34.1
1.07
38.2
0.5
40.2
42.1
19.7
eD
0.383
0.433
0.483
15.1
17.0
19.0
eE
0.20
0.25
0.30
7.9
9.8
11.8
fD
0.247
9.7
fE
0.260
10.2
ccc
0.080
3.1
ST1G3234B
Package mechanical data
Figure 8.
Flip-Chip 5 tape and reel information
1. Drawing not to scale.
Table 12.
Flip-Chip 5 tape and reel mechanical data
millimeters
inches
Symbol
Min
Typ
A
Max
Min
Typ
178
C
12.8
D
20.2
N
49
13.2
Max
6.926
0.504
0.519
0.795
50
T
51
1.929
1.969
12.4
2.008
0.488
Ao
1.60
1.65
1.70
0.063
0.065
0.067
Bo
1.27
1.32
1.37
0.050
0.052
0.054
Ko
0.76
0.81
0.86
0.030
0.032
0.034
Po
3.9
4
4.1
0.153
0.157
0.161
P
3.9
4
4.1
0.153
0.157
0.161
15/17
Revision history
8
ST1G3234B
Revision history
Table 13.
Document revision history
Date
Revision
1-Aug-2007
1
Initial release.
2
Changed tPD value from 4.4 ns to 4.0 ns, removed footnote inTable 5:
Recommended operating conditions on page 6, updated VOLA value
at VCCA = 1.4 V, changed symbol names for quiescient supply
current and minor text changes in Table 6: DC specification on
page 7, removed Vx and VY waveforms data in Table 10: Waveform
symbol value on page 11, replaced Figure 6: Marking on page 12
and enlarged Figure 7: Flip-Chip 5 package outline on page 13 to
improve readability.
3-Dec-2007
16/17
Changes
ST1G3234B
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17/17