SN74GTLPH3245 [TI]

32-BIT LVTTL-TO-GTLP ADJUSTABLE-EDGE-RATE BUS TRANSCEIVER; 32位LVTTL至GTLP可调节边沿速率总线收发器
SN74GTLPH3245
型号: SN74GTLPH3245
厂家: TEXAS INSTRUMENTS    TEXAS INSTRUMENTS
描述:

32-BIT LVTTL-TO-GTLP ADJUSTABLE-EDGE-RATE BUS TRANSCEIVER
32位LVTTL至GTLP可调节边沿速率总线收发器

总线收发器
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中文:  中文翻译
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SN74GTLPH3245  
32-BIT LVTTL-TO-GTLP ADJUSTABLE-EDGE-RATE BUS TRANSCEIVER  
www.ti.com  
SCES291DOCTOBER 1999REVISED JUNE 2005  
FEATURES  
Variable Edge-Rate Control (ERC) Input  
Selects GTLP Rise and Fall Times for Optimal  
Data-Transfer Rate and Signal Integrity in  
Distributed Loads  
Member of the Texas Instruments Widebus+™  
Family  
TI-OPC™ Circuitry Limits Ringing on  
Unevenly Loaded Backplanes  
Ioff, Power-Up 3-State, and BIAS VCC Support  
Live Insertion  
OEC™ Circuitry Improves Signal Integrity and  
Reduces Electromagnetic Interference  
Bus Hold on A-Port Data Inputs  
Distributed VCC and GND Pins Minimize  
High-Speed Switching Noise  
Bidirectional Interface Between GTLP Signal  
Levels and LVTTL Logic Levels  
Latch-Up Performance Exceeds 100 mA Per  
JESD 78, Class II  
LVTTL Interfaces Are 5-V Tolerant  
High-Drive GTLP Outputs (100 mA)  
LVTTL Outputs (–24 mA/24 mA)  
DESCRIPTION/ORDERING INFORMATION  
The SN74GTLPH3245 is a high-drive, 32-bit bus transceiver that provides LVTTL-to-GTLP and GTLP-to-LVTTL  
signal-level translation. It is partitioned as four 8-bit transceivers. The device provides a high-speed interface  
between cards operating at LVTTL logic levels and a backplane operating at GTLP signal levels. High-speed  
(about three times faster than standard LVTTL or TTL) backplane operation is a direct result of GTLP's reduced  
output swing (<1 V), reduced input threshold levels, improved differential input, OEC circuitry, and TI-OPC  
circuitry. Improved GTLP OEC and TI-OPC circuits minimize bus-settling time and have been designed and  
tested using several backplane models. The high drive allows incident-wave switching in heavily loaded  
backplanes with equivalent load impedance down to 11 .  
GTLP is the Texas Instruments (TI™) derivative of the Gunning Transceiver Logic (GTL) JEDEC standard  
JESD 8-3. The ac specification of the SN74GTLPH3245 is given only at the preferred higher noise-margin GTLP,  
but the user has the flexibility of using this device at either GTL (VTT = 1.2 V and VREF = 0.8 V) or GTLP (VTT  
1.5 V and VREF = 1 V) signal levels.  
=
Normally, the B port operates at GTLP signal levels. The A-port and control inputs operate at LVTTL logic levels,  
but are 5-V tolerant and are compatible with TTL and 5-V CMOS inputs. VREF is the B-port differential input  
reference voltage.  
This device is fully specified for live-insertion applications using Ioff, power-up 3-state, and BIAS VCC. The Ioff  
circuitry disables the outputs, preventing damaging current backflow through the device when it is powered  
down. The power-up 3-state circuitry places the outputs in the high-impedance state during power up and power  
down, which prevents driver conflict. The BIAS VCC circuitry precharges and preconditions the B-port input/output  
connections, preventing disturbance of active data on the backplane during card insertion or removal, and  
permits true live-insertion capability.  
This GTLP device features TI-OPC circuitry, which actively limits overshoot caused by improperly terminated  
backplanes, unevenly distributed cards, or empty slots during low-to-high signal transitions. This improves signal  
integrity, which allows adequate noise margin to be maintained at higher frequencies.  
High-drive GTLP backplane interface devices feature adjustable edge-rate control (ERC). Changing the ERC  
input voltage between GND and VCC adjusts the B-port output rise and fall times. This allows the designer to  
optimize system data-transfer rate and signal integrity to the backplane load.  
Active bus-hold circuitry is provided to hold unused or undriven LVTTL data inputs at a valid logic state. Use of  
pullup or pulldown resistors with the bus-hold circuitry is not recommended.  
When VCC is between 0 and 1.5 V, the device is in the high-impedance state during power up or power down.  
However, to ensure the high-impedance state above 1.5 V, the output-enable (OE) input should be tied to VCC  
through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the  
driver.  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas  
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
Widebus+, TI-OPC, OEC, TI are trademarks of Texas Instruments.  
PRODUCTION DATA information is current as of publication date.  
Copyright © 1999–2005, Texas Instruments Incorporated  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
SN74GTLPH3245  
32-BIT LVTTL-TO-GTLP ADJUSTABLE-EDGE-RATE BUS TRANSCEIVER  
www.ti.com  
SCES291DOCTOBER 1999REVISED JUNE 2005  
ORDERING INFORMATION  
TA  
PACKAGE(1)  
ORDERABLE PART NUMBER  
TOP-SIDE MARKING  
–40°C to 85°C  
LFBGA – GKF Tape and reel  
SN74GTLPH3245GKFR  
GM45  
(1) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at  
www.ti.com/sc/package.  
2
SN74GTLPH3245  
32-BIT LVTTL-TO-GTLP ADJUSTABLE-EDGE-RATE BUS TRANSCEIVER  
www.ti.com  
SCES291DOCTOBER 1999REVISED JUNE 2005  
GKF PACKAGE  
(TOP VIEW)  
1
2
3
4
5
6
A
B
C
D
E
F
G
H
J
K
L
M
N
P
R
T
U
V
W
TERMINAL ASSIGNMENTS(1)  
1
2
3
4
5
1B2  
6
A
B
C
D
E
F
1A3  
GND  
1A6  
1A8  
1ERC  
2A2  
2A4  
GND  
2A6  
NC  
1A2  
1A4  
1A5  
1A7  
GND  
2A1  
2A3  
2A5  
2A7  
3A1  
3A2  
3A4  
3A5  
3A7  
GND  
4A1  
4A3  
4A5  
4A7  
1A1  
1B1  
1B3  
GND  
1B6  
1B8  
1VREF  
2B2  
2B4  
GND  
2B6  
NC  
1DIR  
GND  
1VCC  
GND  
GND  
1VCC  
GND  
2A8  
1OE  
GND  
1VCC  
GND  
GND  
1VCC  
GND  
2B8  
1B4  
1B5  
1B7  
1BIAS VCC  
2B1  
G
H
J
2B3  
2B5  
2B7  
K
L
2DIR  
3DIR  
GND  
2VCC  
GND  
GND  
2VCC  
GND  
4A8  
2OE  
3OE  
GND  
2VCC  
GND  
GND  
2VCC  
GND  
4B8  
3B1  
3A3  
GND  
3A6  
3A8  
2ERC  
4A2  
4A4  
GND  
4A6  
3B2  
3B3  
GND  
3B6  
3B8  
2VREF  
4B2  
4B4  
GND  
4B6  
M
N
P
R
T
3B4  
3B5  
3B7  
2BIAS VCC  
4B1  
U
V
W
4B3  
4B5  
4DIR  
4OE  
4B7  
(1) NC – No internal connection  
3
SN74GTLPH3245  
32-BIT LVTTL-TO-GTLP ADJUSTABLE-EDGE-RATE BUS TRANSCEIVER  
www.ti.com  
SCES291DOCTOBER 1999REVISED JUNE 2005  
<BR/>  
FUNCTIONAL DESCRIPTION  
The SN74GTLPH3245 is a high-drive (100-mA), 32-bit bus transceiver partitioned in four 8-bit segments and is  
designed for asynchronous communication between data buses. The device transmits data from the A port to the  
B port or from the B port to the A port, depending on the logic level at the direction-control (DIR) input. OE can  
be used to disable the device so the buses effectively are isolated. Data polarity is noninverting.  
For A-to-B data flow, when OE is low and DIR is high, the B outputs take on the logic value of the A inputs.  
When OE is high, the outputs are in the high-impedance state.  
The data flow for B to A is similar to that of A to B, except OE and DIR are low.  
FUNCTION TABLES  
<br/>  
OUTPUT CONTROL  
INPUTS  
OUTPUT  
MODE  
Isolation  
OE  
H
DIR  
X
Z
L
L
B data to A port  
A data to B port  
True transparent  
L
H
<br/>  
B-PORT EDGE-RATE CONTROL (ERC)  
INPUT ERC  
OUTPUT  
B-PORT  
EDGE RATE  
LOGIC  
LEVEL  
NOMINAL  
VOLTAGE  
GND  
L
Slow  
Fast  
H
VCC  
4
SN74GTLPH3245  
32-BIT LVTTL-TO-GTLP ADJUSTABLE-EDGE-RATE BUS TRANSCEIVER  
www.ti.com  
SCES291DOCTOBER 1999REVISED JUNE 2005  
LOGIC DIAGRAM (POSITIVE LOGIC)(1)  
B3  
1DIR  
B4  
1OE  
E1  
1ERC  
1A1  
A4  
A3  
1B1  
E6  
1V  
REF  
To Seven Other Channels  
K3  
F2  
2DIR  
2A1  
K4  
F5  
2OE  
2B1  
To Seven Other Channels  
(1) 1VCC and 1BIAS VCC are associated with these channels.  
5
SN74GTLPH3245  
32-BIT LVTTL-TO-GTLP ADJUSTABLE-EDGE-RATE BUS TRANSCEIVER  
www.ti.com  
SCES291DOCTOBER 1999REVISED JUNE 2005  
LOGIC DIAGRAM (POSITIVE LOGIC) (CONTINUED)(1)  
L3  
3DIR  
L4  
3OE  
R1  
2ERC  
K5  
K2  
3B1  
3A1  
R6  
2V  
REF  
To Seven Other Channels  
W3  
T2  
4DIR  
4A1  
W4  
T5  
4OE  
4B1  
To Seven Other Channels  
(1) 2VCC and 2BIAS VCC are associated with these channels.  
6
SN74GTLPH3245  
32-BIT LVTTL-TO-GTLP ADJUSTABLE-EDGE-RATE BUS TRANSCEIVER  
www.ti.com  
SCES291DOCTOBER 1999REVISED JUNE 2005  
Absolute Maximum Ratings(1)  
over operating free-air temperature range (unless otherwise noted)  
MIN  
MAX  
UNIT  
VCC  
Supply voltage range  
BIAS VCC  
–0.5  
4.6  
V
A-port, ERC, and control inputs  
–0.5  
–0.5  
–0.5  
–0.5  
7
4.6  
7
VI  
Input voltage range(2)  
V
V
B port and VREF  
A port  
Voltage range applied to any output in the  
high-impedance or power-off state  
VO  
B port  
4.6  
48  
A port  
IO  
IO  
Current into any output in the low state  
mA  
B port  
200  
48  
Current into any A-port output in the high state(3)  
Continuous current through each VCC or GND  
Input clamp current  
mA  
mA  
mA  
mA  
°C/W  
°C  
±100  
–50  
–50  
36  
IIK  
VI < 0  
VO < 0  
IOK  
θJA  
Tstg  
Output clamp current  
Package thermal impedance(4)  
Storage temperature range  
–65  
150  
(1) Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings  
only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating  
conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.  
(2) The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed.  
(3) This current flows only when the output is in the high state and VO > VCC  
.
(4) The package thermal impedance is calculated in accordance with JESD 51-7.  
7
SN74GTLPH3245  
32-BIT LVTTL-TO-GTLP ADJUSTABLE-EDGE-RATE BUS TRANSCEIVER  
www.ti.com  
SCES291DOCTOBER 1999REVISED JUNE 2005  
Recommended Operating Conditions(1)(2)(3)(4)  
MIN NOM  
MAX  
UNIT  
VCC  
BIAS VCC  
Supply voltage  
3.15  
3.3  
3.45  
V
V
GTL  
1.14  
1.35  
0.74  
0.87  
1.2  
1.5  
0.8  
1
1.26  
1.65  
0.87  
1.1  
VTT  
VREF  
VI  
Termination voltage  
GTLP  
GTL  
Reference voltage  
Input voltage  
V
V
GTLP  
B port  
VTT  
5.5  
Except B port  
VCC  
B port  
VREF + 0.05  
VCC – 0.6  
2
VIH  
High-level input voltage  
Low-level input voltage  
ERC  
VCC  
5.5  
V
V
Except B port and ERC  
B port  
VREF – 0.05  
VIL  
ERC  
GND  
0.6  
0.8  
–18  
–24  
24  
Except B port and ERC  
IIK  
Input clamp current  
mA  
mA  
IOH  
High-level output current  
A port  
A port  
IOL  
Low-level output current  
mA  
B port  
100  
10  
t/v  
t/VCC  
TA  
Input transition rise or fall rate  
Power-up ramp rate  
Outputs enabled  
ns/V  
µs/V  
°C  
20  
Operating free-air temperature  
–40  
85  
(1) All unused inputs of the device must be held at VCC or GND to ensure proper device operation. Refer to the TI application report,  
Implications of Slow or Floating CMOS Inputs, literature number SCBA004.  
(2) Proper connection sequence for use of the B-port I/O precharge feature is GND and BIAS VCC = 3.3 V first, I/O second, and VCC = 3.3 V  
last, because the BIAS VCC precharge circuitry is disabled when any VCC pin is connected. The control and VREF inputs can be  
connected anytime, but normally are connected during the I/O stage. If B-port precharge is not required, any connection sequence is  
acceptable, but generally, GND is connected first.  
(3) VTT and RTT can be adjusted to accommodate backplane impedances if the dc recommended IOL ratings are not exceeded.  
(4) VREF can be adjusted to optimize noise margins, but normally is two-thirds VTT. TI-OPC circuitry is enabled in the A-to-B direction and is  
activated when VTT > 0.7 V above VREF. If operated in the A-to-B direction, VREF should be set to within 0.6 V of VTT to minimize current  
drain.  
8
SN74GTLPH3245  
32-BIT LVTTL-TO-GTLP ADJUSTABLE-EDGE-RATE BUS TRANSCEIVER  
www.ti.com  
SCES291DOCTOBER 1999REVISED JUNE 2005  
Electrical Characteristics  
over recommended operating free-air temperature range for GTLP (unless otherwise noted)  
PARAMETER  
TEST CONDITIONS  
MIN TYP(1)  
MAX  
UNIT  
VIK  
VCC = 3.15 V,  
II = –18 mA  
IOH = –100 µA  
IOH = –12 mA  
IOH = –24 mA  
IOL = 100 µA  
IOL = 12 mA  
IOL = 24 mA  
IOL = 10 mA  
IOL = 64 mA  
IOL = 100 mA  
VI = 0 or VCC  
VI = 5.5 V  
–1.2  
V
VCC = 3.15 V to 3.45 V,  
VCC – 0.2  
VOH  
A port  
2.4  
2
V
VCC = 3.15 V  
VCC = 3.15 V to 3.45 V,  
VCC = 3.15 V  
0.2  
0.4  
A port  
0.5  
VOL  
V
0.2  
B port  
VCC = 3.15 V  
VCC = 3.45 V  
0.4  
0.55  
±10  
±20  
±10  
A-port and  
control inputs  
II(2)  
µA  
B port  
A port  
A port  
A port  
VI = 0 to 1.5 V  
VI = 0.8 V  
(3)  
(4)  
IBHL  
IBHH  
VCC = 3.15 V,  
VCC = 3.15 V,  
VCC = 3.45 V,  
VCC = 3.45 V,  
75  
–75  
µA  
µA  
µA  
µA  
VI = 2 V  
(5)  
IBHLO  
VI = 0 to VCC  
VI = 0 to VCC  
Outputs high  
Outputs low  
Outputs disabled  
500  
(6)  
IBHHO  
A port  
–500  
80  
80  
80  
VCC = 3.45 V, IO = 0,  
VI (A-port or control input) = VCC or GND,  
VI (B port) = VTT or GND  
ICC  
A or B port  
mA  
VCC = 3.45 V, One A-port or control input at VCC – 0.6 V,  
Other A-port or control inputs at VCC or GND  
(7)  
ICC  
1.5  
mA  
pF  
Ci  
Control inputs  
A port  
VI = 3.15 V or 0  
VO = 3.15 V or 0  
VO = 1.5 V or 0  
4
6.5  
9.5  
5
7.5  
11  
Cio  
pF  
B port  
(1) All typical values are at VCC = 3.3 V, TA = 25°C.  
(2) For I/O ports, the parameter II includes the off-state output leakage current.  
(3) The bus-hold circuit can sink at least the minimum low sustaining current at VILmax. IBHL should be measured after lowering VIN to GND  
and then raising it to VILmax.  
(4) The bus-hold circuit can source at least the minimum high sustaining current at VIHmin. IBHH should be measured after raising VIN to VCC  
and then lowering it to VIHmin.  
(5) An external driver must source at least IBHLO to switch this node from low to high.  
(6) An external driver must sink at least IBHHO to switch this node from high to low.  
(7) This is the increase in supply current for each input that is at the specified TTL voltage level rather than VCC or GND.  
Hot-Insertion Specifications for A Port  
over recommended operating free-air temperature range  
PARAMETER  
Ioff  
TEST CONDITIONS  
BIAS VCC = 0,  
MIN  
MAX UNIT  
VCC = 0,  
VI or VO = 0 to 5.5 V  
OE = 0  
10  
±30  
±30  
µA  
µA  
µA  
IOZPU  
VCC = 0 to 1.5 V,  
VCC = 1.5 V to 0,  
VO = 0.5 V to 3 V,  
VO = 0.5 V to 3 V,  
IOZPD  
OE = 0  
9
SN74GTLPH3245  
32-BIT LVTTL-TO-GTLP ADJUSTABLE-EDGE-RATE BUS TRANSCEIVER  
www.ti.com  
SCES291DOCTOBER 1999REVISED JUNE 2005  
Live-Insertion Specifications for B Port  
over recommended operating free-air temperature range  
PARAMETER  
Ioff  
TEST CONDITIONS  
BIAS VCC = 0,  
MIN  
MAX UNIT  
VCC = 0,  
VI or VO = 0 to 1.5 V  
10  
±30  
±30  
5
µA  
µA  
µA  
mA  
µA  
V
IOZPU  
VCC = 0 to 1.5 V,  
VCC = 1.5 V to 0,  
VCC = 0 to 3.15 V  
VCC = 3.15 V to 3.45 V  
VCC = 0,  
BIAS VCC = 0,  
BIAS VCC = 0,  
VO = 0.5 V to 1.5 V, OE = 0  
VO = 0.5 V to 1.5 V, OE = 0  
IOZPD  
ICC (BIAS VCC  
)
BIAS VCC = 3.15 V to 3.45 V,  
VO (B port) = 0 to 1.5 V  
10  
VO  
IO  
BIAS VCC = 3.3 V,  
IO = 0  
0.95  
–1  
1.05  
VCC = 0,  
BIAS VCC = 3.15 V to 3.45 V,  
VO (B port) = 0.6 V  
µA  
Switching Characteristics  
over recommended ranges of supply voltage and operating free-air temperature,  
VTT = 1.5 V and VREF = 1 V for GTLP (see Figure 1)  
FROM  
(INPUT)  
TO  
(OUTPUT)  
PARAMETER  
EDGE RATE(1)  
MIN TYP(2)  
MAX UNIT  
tPLH  
tPHL  
tPLH  
tPHL  
ten  
3.9  
3.1  
2.6  
2.1  
4.1  
4
7.2  
ns  
A
A
B
B
B
B
Slow  
8.4  
5.7  
ns  
Fast  
Slow  
Fast  
5.8  
7.3  
ns  
OE  
OE  
tdis  
9.4  
ten  
2.9  
4
5.9  
ns  
tdis  
6.9  
Slow  
Fast  
Slow  
Fast  
3
tr  
tf  
Rise time, B outputs (20% to 80%)  
Fall time, B outputs (80% to 20%)  
ns  
ns  
1.5  
4
2.5  
0.5  
1.2  
1.1  
1.7  
tPLH  
tPHL  
ten  
6.7  
ns  
B
A
A
4.5  
6.3  
ns  
OE  
tdis  
5.1  
(1) Slow (ERC = GND) and Fast (ERC = VCC  
)
(2) All typical values are at VCC = 3.3 V, TA = 25°C.  
10  
SN74GTLPH3245  
32-BIT LVTTL-TO-GTLP ADJUSTABLE-EDGE-RATE BUS TRANSCEIVER  
www.ti.com  
SCES291DOCTOBER 1999REVISED JUNE 2005  
PARAMETER MEASUREMENT INFORMATION  
1.5 V  
6 V  
Open  
GND  
S1  
500 Ω  
From Output  
Under Test  
12.5 Ω  
From Output  
Under Test  
TEST  
S1  
Open  
6 V  
Test  
Point  
t
t
/t  
C = 50 pF  
(see Note A)  
PLH PHL  
L
500 Ω  
t
/t  
PLZ PZL  
C = 30 pF  
(see Note A)  
L
/t  
GND  
PHZ PZH  
LOAD CIRCUIT FOR A OUTPUTS  
LOAD CIRCUIT FOR B OUTPUTS  
3 V  
0 V  
1.5 V  
1.5 V  
Input  
t
t
PHL  
PLH  
V
V
OH  
1 V  
1 V  
Output  
3 V  
OL  
Output  
Control  
1.5 V  
1.5 V  
VOLTAGE WAVEFORMS  
PROPAGATION DELAY TIMES  
(A port to B port)  
0 V  
3 V  
t
t
PLZ  
PZL  
Output  
Waveform 1  
S1 at 6 V  
1.5 V  
0 V  
1 V  
1 V  
1.5 V  
1.5 V  
Input  
V
OL  
+ 0.3 V  
(see Note B)  
V
OL  
OH  
t
t
PHL  
t
t
PLH  
PZH  
PHZ  
Output  
Waveform 2  
S1 at GND  
V
V
OH  
V
OH  
− 0.3 V  
1.5 V  
1.5 V  
Output  
V
OL  
0 V  
(see Note B)  
VOLTAGE WAVEFORMS  
PROPAGATION DELAY TIMES  
(B port to A port)  
VOLTAGE WAVEFORMS  
ENABLE AND DISABLE TIMES  
(A port)  
NOTES: A. C includes probe and jig capacitance.  
L
B. Waveform 1 is for an output with internal conditions such that the output is low, except when disabled by the output control.  
Waveform 2 is for an output with internal conditions such that the output is high, except when disabled by the output control.  
C. All input pulses are supplied by generators having the following characteristics: PRR 10 MHz, Z = 50 , t 2 ns, t 2 ns.  
O
r
f
D. The outputs are measured one at a time, with one transition per measurement.  
Figure 1. Load Circuits and Voltage Waveforms  
11  
SN74GTLPH3245  
32-BIT LVTTL-TO-GTLP ADJUSTABLE-EDGE-RATE BUS TRANSCEIVER  
www.ti.com  
SCES291DOCTOBER 1999REVISED JUNE 2005  
Distributed-Load Backplane Switching Characteristics  
The preceding switching characteristics table shows the switching characteristics of the device into a lumped  
load (Figure 1). However, the designer's backplane application probably is a distributed load. The physical  
representation is shown in Figure 2. This backplane, or distributed load, can be approximated closely to a  
resistor inductance capacitance (RLC) circuit, as shown in Figure 3. This device has been designed for optimum  
performance in this RLC circuit. The following switching characteristics table shows the switching characteristics  
of the device into the RLC load, to help the designer better understand the performance of the GTLP device in  
this typical backplane. See www.ti.com/sc/gtlp for more information.  
1.5 V  
1.5 V  
Z
O
= 50  
0.25”  
1”  
1”  
0.25”  
Conn.  
Conn.  
Conn.  
Conn.  
1”  
1”  
1”  
1”  
Rcvr  
Rcvr  
Rcvr  
Drvr  
Slot 1  
Slot 2  
Slot 19  
Slot 20  
Figure 2. High-Drive Test Backplane  
1.5 V  
11 Ω  
L = 14 nH  
L
From Output  
Under Test  
Test  
Point  
C = 18 pF  
L
Figure 3. High-Drive RLC Network  
12  
SN74GTLPH3245  
32-BIT LVTTL-TO-GTLP ADJUSTABLE-EDGE-RATE BUS TRANSCEIVER  
www.ti.com  
SCES291DOCTOBER 1999REVISED JUNE 2005  
Switching Characteristics  
over recommended ranges of supply voltage and operating free-air temperature,  
VTT = 1.5 V and VREF = 1 V for GTLP (see Figure 3)  
FROM  
(INPUT)  
TO  
(OUTPUT)  
PARAMETER  
EDGE RATE(1)  
TYP(2)  
UNIT  
tPLH  
tPHL  
tPLH  
tPHL  
ten  
4.9  
4.9  
3.7  
3.7  
5.1  
5.4  
4.1  
4.1  
2
A
A
B
B
B
B
Slow  
ns  
Fast  
Slow  
Fast  
ns  
ns  
ns  
ns  
ns  
OE  
OE  
tdis  
ten  
tdis  
Slow  
Fast  
Slow  
Fast  
tr  
tf  
Rise time, B outputs (20% to 80%)  
Fall time, B outputs (80% to 20%)  
1.2  
2.5  
1.8  
(1) Slow (ERC = GND) and Fast (ERC = VCC  
)
(2) All typical values are at VCC = 3.3 V, TA = 25°C. All values are derived from TI-SPICE models.  
13  
PACKAGE OPTION ADDENDUM  
www.ti.com  
20-Jul-2011  
PACKAGING INFORMATION  
Status (1)  
Eco Plan (2)  
MSL Peak Temp (3)  
Samples  
Orderable Device  
Package Type Package  
Drawing  
Pins  
Package Qty  
Lead/  
Ball Finish  
(Requires Login)  
SN74GTLPH3245GKFR  
SN74GTLPH3245ZKFR  
NRND  
BGA  
MICROSTAR  
GKF  
ZKF  
114  
114  
1000  
1000  
TBD  
SNPB  
Level-2-235C-1 YEAR  
ACTIVE  
LFBGA  
Green (RoHS  
& no Sb/Br)  
SNAGCU Level-3-260C-168 HR  
(1) The marketing status values are defined as follows:  
ACTIVE: Product device recommended for new designs.  
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.  
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.  
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.  
OBSOLETE: TI has discontinued the production of the device.  
(2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability  
information and additional product content details.  
TBD: The Pb-Free/Green conversion plan has not been defined.  
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that  
lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.  
Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between  
the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above.  
Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight  
in homogeneous material)  
(3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.  
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information  
provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and  
continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.  
TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.  
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.  
Addendum-Page 1  
PACKAGE MATERIALS INFORMATION  
www.ti.com  
23-Jul-2011  
TAPE AND REEL INFORMATION  
*All dimensions are nominal  
Device  
Package Package Pins  
Type Drawing  
SPQ  
1000  
1000  
Reel  
Reel  
A0  
B0  
K0  
P1  
W
Pin1  
Diameter Width (mm) (mm) (mm) (mm) (mm) Quadrant  
(mm) W1 (mm)  
SN74GTLPH3245GKFR BGA MI  
GKF  
ZKF  
114  
114  
330.0  
330.0  
24.4  
24.4  
5.8  
5.8  
16.3  
16.3  
1.8  
1.8  
8.0  
8.0  
24.0  
24.0  
Q1  
Q1  
CROSTA  
R
SN74GTLPH3245ZKFR LFBGA  
Pack Materials-Page 1  
PACKAGE MATERIALS INFORMATION  
www.ti.com  
23-Jul-2011  
*All dimensions are nominal  
Device  
Package Type Package Drawing Pins  
SPQ  
Length (mm) Width (mm) Height (mm)  
SN74GTLPH3245GKFR BGA MICROSTAR  
SN74GTLPH3245ZKFR LFBGA  
GKF  
ZKF  
114  
114  
1000  
1000  
333.2  
333.2  
345.9  
345.9  
31.8  
31.8  
Pack Materials-Page 2  
IMPORTANT NOTICE  
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TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI’s standard  
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www.ti.com/audio  
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