SN74LVCE161284
19-BIT IEEE STD 1284 TRANSLATION TRANSCEIVER
WITH ERROR-FREE POWER UP
www.ti.com
SCES541 – JANUARY 2004 – REVISED MARCH 2005
FEATURES
•
•
•
•
•
•
•
Auto-Power-Up Feature Prevents Printer
Errors When Printer Is Turned On, But No
Valid Signal Is at A9–A13 Pins
1.4-kΩ Pullup Resistors Integrated on All
Open-Drain Outputs Eliminate the Need for
Discrete Resistors
Designed for IEEE Std 1284-I (Level-1 Type)
and IEEE Std 1284-II (Level-2 Type) Electrical
Specifications
Flow-Through Architecture Optimizes PCB
Layout
Ioff and Power-Up 3-State Support Hot
Insertion
Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
ESD Protection
– ±4 kV – Human-Body Model
– ±8 kV – IEC 61000-4-2, Contact Discharge
(Connector Pins)
– ±15 kV – IEC 61000-4-2, Air-Gap Discharge
(Connector Pins)
– ±15 kV – Human-Body Model
(Connector Pins)
DGG OR DL PACKAGE
(TOP VIEW)
HD
A9
A10
A11
A12
A13
VCC
A1
A2
GND
A3
A4
A5
A6
GND
A7
A8
VCC
PERI LOGIC IN
A14
A15
A16
A17
HOST LOGIC OUT
1
48
2
47
3
46
4
45
5
44
6
43
7
42
8
41
9
40
10
39
11
38
12
37
13
36
14
35
15
34
16
33
17
32
18
31
19
30
20
29
21
28
22
27
23
26
24
25
DIR
Y9
Y10
Y11
Y12
Y13
VCC CABLE
B1
B2
GND
B3
B4
B5
B6
GND
B7
B8
VCC CABLE
PERI LOGIC OUT
C14
C15
C16
C17
HOST LOGIC IN
DESCRIPTION/ORDERING INFORMATION
The SN74LVCE161284 is designed for 3-V to 3.6-V VCC operation. This device provides asynchronous two-way
communication between data buses. The control-function implementation minimizes external timing
requirements.
This device has eight bidirectional bits; data can flow in the A-to-B direction when the direction-control input (DIR)
is high and in the B-to-A direction when DIR is low. This device also has five drivers that drive the cable side and
four receivers. The SN74LVCE161284 has one receiver dedicated to the HOST LOGIC line and a driver to drive
the PERI LOGIC line.
ORDERING INFORMATION
PACKAGE (1)
TA
0°C to 70°C
SSOP – DL
TSSOP – DGG
(1)
ORDERABLE PART NUMBER
Tube
SN74LVCE161284DL
Tape and reel
SN74LVCE161284DLR
Tape and reel
SN74LVCE161284DGGR
TOP-SIDE MARKING
LVCE161284
LVCE161284
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at
www.ti.com/sc/package.
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.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2004–2005, Texas Instruments Incorporated
SN74LVCE161284
19-BIT IEEE STD 1284 TRANSLATION TRANSCEIVER
WITH ERROR-FREE POWER UP
www.ti.com
SCES541 – JANUARY 2004 – REVISED MARCH 2005
DESCRIPTION/ORDERING INFORMATION (CONTINUED)
The output drive mode is determined by the high-drive (HD) control pin. When HD is high, the outputs are in a
totem-pole configuration, and in an open-drain configuration when HD is low. This meets the drive requirements
as specified in the IEEE Std 1284-I (level-1 type) and IEEE Std 1284-II (level-2 type) parallel peripheral-interface
specifications. Except for HOST LOGIC IN and peripheral logic out (PERI LOGIC OUT), all cable-side pins have
a 1.4-kΩ integrated pullup resistor. The pullup resistor is switched off if the associated output driver is in the low
state or if the output voltage is above VCC CABLE. If VCC CABLE is off, PERI LOGIC OUT is set to low.
The device has two supply voltages. VCC is designed for 3-V to 3.6-V operation. VCC CABLE supplies the inputs
and output buffers of the cable side only and is designed for 3-V to 3.6-V and for 4.7-V to 5.5-V operation. Even
when VCC CABLE is 3 V to 3.6 V, the cable-side I/O pins are 5-V tolerant.
The Y outputs (Y9–Y13) stay in the high state after power on until an associated input (A9–A13) goes high.
When an associated input goes high, all Y outputs are activated, and noninverting signals of the associated
inputs are driven through Y outputs. This special feature prevents printer-system errors caused by deasserting
the BUSY signal in the cable at power on.
FUNCTION TABLE
INPUTS
2
DIR
HD
L
L
L
H
H
L
H
H
OUTPUT
MODE
Open drain
A9–A13 to Y9–Y13 and PERI LOGIC IN to PERI LOGIC OUT
Totem pole
B1–B8 to A1–A8 and C14–C17 to A14–A17
Totem pole
B1–B8 to A1–A8, A9–A13 to Y9–Y13, PERI LOGIC IN to PERI LOGIC OUT, and C14–C17 to A14–A17
Open drain
A1–A8 to B1–B8, A9–A13 to Y9–Y13, and PERI LOGIC IN to PERI LOGIC OUT
Totem pole
C14–C17 to A14–A17
Totem pole
A1–A8 to B1–B8, A9–A13 to Y9–Y13, C14–C17 to A14–A17, and PERI LOGIC IN to PERI LOGIC OUT
SN74LVCE161284
19-BIT IEEE STD 1284 TRANSLATION TRANSCEIVER
WITH ERROR-FREE POWER UP
www.ti.com
SCES541 – JANUARY 2004 – REVISED MARCH 2005
LOGIC DIAGRAM
VCC CABLE
DIR
HD
42
48
1
See Note A
See Note A
See Note B
B1-B8
A1-A8
A9-A13
Y9-Y13
See
Note C
PERI LOGIC IN
19
30
A14-A17
HOST LOGIC OUT
PERI LOGIC OUT
C14-C17
24
25
HOST LOGIC IN
NOTES: A. The PMOS transistors prevent backdriving current from the signal pins to VCC CABLE when VCC CABLE is open or at GND. The
PMOS transistor is turned off when the associated driver is in the low state.
B. The PMOS transistor prevents backdriving current from the signal pins to VCC CABLE when VCC CABLE is open or at GND.
C. Active input detection circuit forces Y9-Y13 to the high state after power-on, until one of the A9-A13 goes high (see Figure 1).
3
SN74LVCE161284
19-BIT IEEE STD 1284 TRANSLATION TRANSCEIVER
WITH ERROR-FREE POWER UP
www.ti.com
SCES541 – JANUARY 2004 – REVISED MARCH 2005
D
A9
A10
A11
A12
A13
Timer
Q
OUT
C
R
Auto-Power-Up
Active Input Detection Circuit
VCC = 3.3 V
VCC CABLE = 5 V
TA = 25°C
TYP = 80 ns
VCC and VCC CABLE
700 ns (TYP)
An (one of A9−A13)
50% VCC
Initial Activation Time
Y9−Y13 Other Than Yn
50% VCC CABLE
NOTE A: One of A9−A13 is switched as shown above, and the other four inputs are forced to low state.
Figure 1. Error-Free Circuit Timing
4
SN74LVCE161284
19-BIT IEEE STD 1284 TRANSLATION TRANSCEIVER
WITH ERROR-FREE POWER UP
www.ti.com
Absolute Maximum Ratings
SCES541 – JANUARY 2004 – REVISED MARCH 2005
(1)
over operating free-air temperature range (unless otherwise noted)
MIN
MAX
VCC CABLE Supply voltage range
–0.5
7
V
VCC
–0.5
4.6
V
–2
7
V
–0.5
VCC + 0.5
Supply voltage range
Cable
side (2) (3)
UNIT
VI,
VO
Input and output voltage range
IIK
Input clamp current
VI < 0
–20
mA
IOK
Output clamp current
VO < 0
–50
mA
Except PERI LOGIC OUT
±50
mA
±100
mA
IO
Continuous output current
Peripheral side (2)
PERI LOGIC OUT
±200
mA
VO = 5.5 V and VCC CABLE = 3 V
65
mA
DGG package
70
DL package
63
Continuous current through each VCC or GND
ISK
Output high sink current
θJA
Package thermal impedance (4)
Tstg
Storage temperature range
(1)
(2)
(3)
(4)
V
–65
°C/W
°C
150
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.
The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
The ac input-voltage pulse duration is limited to 40 ns if the amplitude is greater than –0.5 V.
The package thermal impedance is calculated in accordance with JESD 51-7.
Recommended Operating Conditions (1)
MIN
MAX
VCC CABLE Supply voltage for the cable side, VCC CABLE ≥ VCC
3
5.5
V
VCC
3
3.6
V
Supply voltage
A, B, DIR, and HD
VIH
High-level input voltage
VIL
Low-level input voltage
2
C14–C17
2.3
HOST LOGIC IN
2.6
PERI LOGIC IN
Input voltage
VO
Open-drain output voltage
2
0.8
C14–C17
0.8
HOST LOGIC IN
1.6
High-level output current
0
VCC
Cable side
0
5.5
HD low
0
A outputs and HOST LOGIC OUT
–4
(1)
Operating free-air temperature
mA
14
A outputs and HOST LOGIC OUT
4
PERI LOGIC OUT
TA
V
–0.5
B and Y outputs
Low-level output current
5.5
V
–14
PERI LOGIC OUT
IOL
V
0.8
Peripheral side
HD high, B and Y outputs
IOH
V
A, B, DIR, and HD
PERI LOGIC IN
VI
UNIT
mA
84
0
70
°C
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.
5
SN74LVCE161284
19-BIT IEEE STD 1284 TRANSLATION TRANSCEIVER
WITH ERROR-FREE POWER UP
www.ti.com
SCES541 – JANUARY 2004 – REVISED MARCH 2005
Electrical Characteristics
over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER
∆Vt
Hysteresis
(VT+ – VT–)
VOH
VCC
VCC
CABLE
All inputs except the C inputs
and HOST LOGIC IN
3.3 V
5V
C inputs
IOH = –14 mA
HD high, A outputs, and
HOST LOGIC OUT
IOH = –4 mA
PERI LOGIC OUT
IOH = –0.5 mA
B and Y outputs
IOL = 14 mA
IOH = –50 µA
3V
3V
2.23
3.3 V
4.7 V
2.4
3V
3V
3.15 V
3.15 V
3.1
3.3 V
4.7 V
4.5
2.4
V
2.8
0.77
IOL = 50 µA
3V
IOL = 4 mA
0.2
3V
04
IOL = 84 mA
C inputs
VI = GND
(pullup resistors)
All inputs except B or C inputs
VI = VCC or GND
A1–A8
VO = VCC or GND
B outputs
Open-drain Y outputs
IOZPU
IOZPD
Ioff
B and Y outputs
B and Y outputs
3.6 V
VO = GND
(pullup resistors)
VO = 5.5 V
VO = GND
VO = 5.5 V
VI or VO = 0 to 5.5 V
350
µA
–5
mA
350
µA
–5
mA
µA
0
100
3.6 V
3.6 V
IO = 0
45
5.5 V
70
3.6 V
0.8
3.3 V
3.3 V
R pullup
B1–B8, Y9–Y13, C14–C17
3.3 V
3.3 V
Ci
A9–A13, DIR, HD,
PERI LOGIC IN
VI = VCC or GND
3.3 V
5V
HOST LOGIC IN
6
µA
100
0
VO = 0 V
(in high-impedance state)
Typical values are measured at TA = 25°C.
Connect the VCC pin to the VCC CABLE pin.
µA
mA
0 to 1.5 V (2) 0 to 1.5 V (2)
VO = GND
IOH = –35 mA
(1)
(2)
±1
–3.5
0 to 1.5 V (2) 0 to 1.5 V (2)
Power-down output leakage,
B1–B8 and Y9–Y13 outputs
B1–B8
mA
–3.5
VI or VO = 0 to 3.6 V
A1–A8
–3.5
3.6 V
B1–B8, Y9–Y13
Cio
µA
50
3.6 V
VI = GND
(12 × pullup)
ZO
50
±20
5.5 V
VO = GND
(pullup resistors)
VI = VCC,
3.6 V
5.5 V
Power-down input leakage,
except A1–A8 or B1–B8 inputs
ICC
V
0.9
VO = VCC CABLE
IOZ
UNIT
V
0.2
VI = VCC
II
MAX
0.8
HD high, B and Y outputs
PERI LOGIC OUT
MIN TYP (1)
0.4
HOST LOGIC IN
A outputs and
HOST LOGIC OUT
VOL
TEST CONDITIONS
Ω
36
1.15
1.65
6.5
mA
kΩ
pF
4
VO = VCC or GND
3.3 V
5V
8
13
pF
SN74LVCE161284
19-BIT IEEE STD 1284 TRANSLATION TRANSCEIVER
WITH ERROR-FREE POWER UP
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SCES541 – JANUARY 2004 – REVISED MARCH 2005
Switching Characteristics
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) (see Figure 2 and
Figure 3)
FROM
(INPUT)
TO
(OUTPUT)
Totem pole
A1–A8
B1–B8
Totem pole
A9–A13
Y9–Y13
Totem pole
B1–B8
A1–A8
Totem pole
C14–C17
A14–A17
Totem pole
PERI LOGIC IN
PERI LOGIC OUT
Totem pole
HOST LOGIC IN
HOST LOGIC OUT
PARAMETER
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tslew
Totem pole
B1–B8 and Y9–Y13 outputs
tPZH
tPHZ
ten–tdis
tPHZ
tr, tf
(1)
(2)
2
30
2
30
2
30
2
30
2
12
2
12
2
14
2
14
2
16
2
16
1
18
1
18
0.05
0.4
30
HD
B1–B8, Y9–Y13, and
PERI LOGIC OUT
2
25
DIR
A1–A8
2
25
2
25
2
25
B1–B8
A1–A13
B1–B8 or Y9–Y13
A1–A8 or B1–B8
B1–B8 or A1–A8
Open drain
tsk(o) (2)
MAX
2
DIR
tPLZ
MIN TYP (1)
1
3
UNIT
ns
ns
ns
ns
ns
ns
V/ns
ns
ns
ns
120
ns
10
ns
Typical values are measured at VCC = 3.3 V, VCC CABLE = 5 V, and TA = 25°C.
Skew is measured at 1/2 (VOH + VOL) for signals switching in the same direction.
Table 1. ESD Protection
PIN
TEST CONDITIONS
TYP
B1–B8, Y9–Y13, PERI LOGIC OUT,
C14–C17, HOST LOGIC IN
DIR, HD, A1–A8, A9–A13,
PERI LOGIC IN, A14–A17,
HOST LOGIC OUT
UNIT
±15
HBM
Contact discharge,
IEC 61000-4-2
±8
Air-gap discharge,
IEC 61000-4-2
±15
±4
HBM
kV
kV
Operating Characteristics
VCC and VCC CABLE = 3.3 V, CL = 0, f = 10 MHz, TA = 25°C
PARAMETER
Cpd
Power dissipation capacitance
FROM
(INPUT)
TO
(OUTPUT)
A
B
A
Y
6
PERI LOGIC IN
PERI LOGIC OUT
10
B
A
33
C
A
29
HOST LOGIC IN
HOST LOGIC OUT
29
TYP
UNIT
15
pF
7
SN74LVCE161284
19-BIT IEEE STD 1284 TRANSLATION TRANSCEIVER
WITH ERROR-FREE POWER UP
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SCES541 – JANUARY 2004 – REVISED MARCH 2005
PARAMETER MEASUREMENT INFORMATION
VCC CABLE
CL = 50 pF
(see Note A)
62 Ω
TP1
2.7 V
Input
(see Note B)
0V
tf1
Sink Load
From
B or Y Output
Under Test
95% (VCC CABLE = 5.0 V0.5 V)
50% (VCC CABLE = 5.0 V0.5 V)
Output
(see Note B)
tr1
Source Load
CL = 50 pF
(see Note A)
62 Ω
Output
(see Note B)
1.9 V (VCC CABLE = 5.0 V0.5 V)
0.4 V
VOLTAGE WAVEFORMS MEASURED AT TP1
SLEW RATE WAVEFORMS (B1−8 AND Y9−13)
SLEW RATE A-TO-B OR A-TO-Y LOAD (TOTEM POLE) OR PERI LOGIC IN TO PERI LOGIC OUT
VCC CABLE
2.7 V
Input
(see Note C)
TP1
1.4 V
1.4 V
0V
500 Ω
From
B or Y Output
CL = 50 pF
(see Note A)
2V
Output
(see Note C)
VOH
2V
0.8 V
0.8 V
tr
VOL
tf
VOLTAGE WAVEFORMS MEASURED AT TP1, B SIDE
A-TO-B LOAD OR A-TO-Y LOAD (OPEN DRAIN) OR PERI LOGIC IN TO PERI LOGIC OUT
NOTES: A. CL includes probe and jig capacitance.
B. When VCC CABLE is 3.3 V 0.3 V, slew rate is measured between 0.4 V and 0.9 V for the rising edge and between 2.4 V and 1.9 V
for the falling edge. When VCC CABLE is 5 V 0.5 V, slew rate is measured between 0.4 V and 1.9 V for the rising edge and between
95% VCC CABLE and 50% VCC CABLE for the falling edge.
tslew fall V CC 95% – 50%
tf1
C.
D.
E.
F.
G.
tslew rise 1.9 V – 0.4 V
tr1
Input rise (tr) and fall (tf) times are 3 ns. Rise and fall times (open drain) are