Data flow in each direction is controlled by output-enable (OEAB
and OEBA), latch-enable (LEAB and LEBA),
and clock (CLKAB and CLKBA) inputs. The clock can be controlled by the clock-enable (CLKENAB
CLKENBA
) inputs. For A-to-B data flow, the device operates in the transparent mode when LEAB is high. When
LEAB is low , the A data is latched if CLKAB is held at a high or low logic level. If LEAB is low, the A data is stored
in the latch/flip-flop on the low-to-high transition of CLKAB. When OEAB
OEAB
is high, the outputs are in the high-impedance state.
Data flow for B to A is similar to that of A to B, but uses OEBA
, LEBA, CLKBA, and CLKENBA.
is low, the outputs are active. When
The B-port outputs include equivalent 26-Ω series resistors to reduce overshoot and undershoot.
T o ensure the high-impedance state during power up or power down, OE
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.
Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level.
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, EPIC, and UBT are trademarks of Texas Instruments Incorporated.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
Copyright 1999, Texas Instruments Incorporated
and
1
SN74ALVCH162601
18-BIT UNIVERSAL BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
SCES026G – JULY 1995 – REVISED JUNE 1999
description (continued)
The SN74ALVCH162601 is characterized for operation from –40°C to 85°C.
CLKAB
†
OUTPUT
A
B
‡
0
‡
0
‡
0
FUNCTION TABLE
INPUTS
CLKENABOEAB
XHXXXZ
XLH XL L
X LH XH H
H LL XXB
H LL XXB
L LL ↑LL
L LL ↑HH
L LLL or HXB
†
A-to-B data flow is shown: B-to-A flow is similar, but uses OEBA
LEBA, CLKBA, and CLKENBA
‡
Output level before the indicated steady-state input conditions were
established
LEAB
.
,
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
logic diagram (positive logic)
SN74ALVCH162601
18-BIT UNIVERSAL BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
SCES026G – JULY 1995 – REVISED JUNE 1999
OEAB
CLKENAB
CLKAB
LEAB
LEBA
CLKBA
CLKENBA
OEBA
A1
1
56
55
2
28
30
29
27
3
CLK
CE
1D
C1
CE
1D
C1
CLK
54
B1
To 17 Other Channels
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
3
SN74ALVCH162601
18-BIT UNIVERSAL BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
SCES026G – JULY 1995 – REVISED JUNE 1999
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, V
Input voltage range, V
Output voltage range, V
Input clamp current, I
Output clamp current, I
Continuous output current, I
Continuous current through each V
Package thermal impedance, θ
Storage temperature range, T
†
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.
NOTES: 1. The input negative-voltage and output voltage ratings may be exceeded if the input and output current ratings are observed.
2. This value is limited to 4.6 V maximum.
3. The package thermal impedance is calculated in accordance with JESD 51.
IOL = 8 mA2.7 V0.6
IOL = 12 mA3 V0.8
VI = VCC or GND3.6 V±5µA
VI = 0.58 V
VI = 1.07 V
VI = 0.7 V
VI = 1.7 V
VI = 0.8 V
VI = 2 V
VI = 0 to 3.6 V
VO = VCC or GND3.6 V±10µA
VI = VCC or GND,IO = 03.6 V40µA
One input at VCC – 0.6 V,Other inputs at VCC or GND3 V to 3.6 V750µA
‡
V
CC
2.3 V1.7
2.7 V2.2
3 V2.4
2.3 V1.7
3 V2.4
2.3 V0.7
2.7 V0.4
2.3 V0.55
3 V0.55
3.6 V±500
MIN TYP†MAXUNIT
25
–25
45
–45
75
–75
V
µA
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
t
ns
tsuSetup time
Data before LE↓
ns
thHold time
Data after LE↓
ns
(INPUT)
(OUTPUT)
t
ns
PARAMETER
TEST CONDITIONS
UNIT
C
C
pF
SN74ALVCH162601
18-BIT UNIVERSAL BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
SCES026G – JULY 1995 – REVISED JUNE 1999
timing requirements over recommended operating free-air temperature range (unless otherwise
noted) (see Figures 1 through 3)
f
clock
w
†
This information was not available at the time of publication.
Clock frequency
Pulse
duration
p
LE high
CLK high or low
Data before CLK↑
CLK high
CLK low
CLKEN before CLK↑
Data after CLK↑
CLK high
CLK low
CLKEN after CLK↑
VCC = 1.8 V
MINMAXMINMAXMINMAXMINMAX
†
†
†
†
†
†
†
†
†
†
VCC = 2.5 V
± 0.2 V
†
3.33.33.3
3.33.33.3
2.32.42.1
21.61.6
1.31.21.1
221.7
0.70.70.8
1.31.61.4
1.721.7
0.30.50.6
VCC = 2.7 V
140150150MHz
VCC = 3.3 V
± 0.3 V
UNIT
switching characteristics over recommended operating free-air temperature range (unless
otherwise noted) (see Figures 1 through 3)
PARAMETER
f
max
pd
t
en
t
dis
t
en
t
dis
†
This information was not available at the time of publication.
FROM
AB
BA
LEABB
LEBAA
CLKABB
CLKBAA
OEAB
OEAB
OEBA
OEBA
TO
B
B
A
A
VCC = 1.8 V
MINTYPMINMAXMINMAXMINMAX
†
VCC = 2.5 V
± 0.2 V
140150150MHz
†
1.34.85.21.64.5
†
†
†
†
†
†
†
†
†
14.34.614.1
15.55.91.55.1
155.314.7
1.56.16.31.65.5
1.35.65.81.45
1.66.16.71.65.7ns
1.85.75.31.84.8ns
1.15.56.11.15.2ns
1.35.24.81.64.4ns
VCC = 2.7 V
VCC = 3.3 V
± 0.3 V
UNIT
operating characteristics, TA = 25°C
VCC = 1.8 V VCC = 2.5 V VCC = 3.3 V
TYPTYPTYP
Power dissipation
pd
capacitance
†
This information was not available at the time of publication.
Outputs enabled
Outputs disabled
p
= 50 pF,f = 10 MHz
L
†
†
4150
66
p
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
7
SN74ALVCH162601
18-BIT UNIVERSAL BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
SCES026G – JULY 1995 – REVISED JUNE 1999
PARAMETER MEASUREMENT INFORMATION
From Output
Under Test
CL = 30 pF
(see Note A)
1 kΩ
1 kΩ
S1
V
2 × V
Open
GND
= 1.8 V
CC
CC
TESTS1
t
pd
t
PLZ/tPZL
t
PHZ/tPZH
Open
2 × V
GND
CC
LOAD CIRCUIT
Timing
Input
t
Data
Input
Input
t
PLH
Output
NOTES: A. CL includes probe and jig capacitance.
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, ZO = 50 Ω, tr ≤ 2 ns, tf ≤ 2 ns.
D. The outputs are measured one at a time with one transition per measurement.
E. t
PLZ
F. t
PZL
G. t
PLH
VCC/2
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
VCC/2VCC/2
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
and t
PHZ
and t
PZH
and t
PHL
VCC/2
t
su
are the same as t
are the same as ten.
are the same as tpd.
h
VCC/2
VCC/2VCC/2
.
dis
t
PHL
V
0 V
V
0 V
V
0 V
V
V
CC
CC
CC
OH
OL
Input
Output
Control
(low-level
enabling)
Output
Waveform 1
S1 at 2 × V
(see Note B)
Output
Waveform 2
S1 at GND
(see Note B)
VOLTAGE WAVEFORMS
PULSE DURATION
t
PZL
CC
t
PZH
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
VCC/2
VCC/2
t
w
V
0 V
V
0 V
V
V
V
0 V
CC
CC
CC
OL
OH
VCC/2VCC/2
VCC/2VCC/2
t
PLZ
VOL + 0.15 V
t
PHZ
VOH – 0.15 V
Figure 1. Load Circuit and Voltage Waveforms
8
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
From Output
Under Test
CL = 30 pF
(see Note A)
18-BIT UNIVERSAL BUS TRANSCEIVER
SCES026G – JULY 1995 – REVISED JUNE 1999
PARAMETER MEASUREMENT INFORMATION
V
= 2.5 V ± 0.2 V
CC
2 × V
Open
GND
CC
TESTS1
t
pd
t
PLZ/tPZL
t
PHZ/tPZH
500 Ω
500 Ω
S1
SN74ALVCH162601
WITH 3-STATE OUTPUTS
Open
2 × V
CC
GND
LOAD CIRCUIT
Timing
Input
t
Data
Input
Input
t
PLH
Output
NOTES: A. CL includes probe and jig capacitance.
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, ZO = 50 Ω, tr ≤ 2 ns, tf ≤ 2 ns.
D. The outputs are measured one at a time with one transition per measurement.
E. t
PLZ
F. t
PZL
G. t
PLH
VCC/2
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
VCC/2VCC/2
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
and t
PHZ
and t
PZH
and t
PHL
VCC/2
t
su
are the same as t
are the same as ten.
are the same as tpd.
h
VCC/2
VCC/2VCC/2
.
dis
t
PHL
V
0 V
V
0 V
V
0 V
V
V
CC
CC
CC
OH
OL
Input
Output
Control
(low-level
enabling)
Output
Waveform 1
S1 at 2 × V
(see Note B)
Output
Waveform 2
S1 at GND
(see Note B)
VOLTAGE WAVEFORMS
PULSE DURATION
t
PZL
CC
t
PZH
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
VCC/2
VCC/2
t
w
V
0 V
V
0 V
V
V
V
0 V
CC
CC
CC
OL
OH
VCC/2VCC/2
VCC/2VCC/2
t
PLZ
VOL + 0.15 V
t
PHZ
VOH – 0.15 V
Figure 2. Load Circuit and Voltage Waveforms
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
9
SN74ALVCH162601
18-BIT UNIVERSAL BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
SCES026G – JULY 1995 – REVISED JUNE 1999
PARAMETER MEASUREMENT INFORMATION
V
= 2.7 V AND 3.3 V ± 0.3 V
CC
From Output
Under Test
CL = 50 pF
(see Note A)
Timing
Input
Data
Input
Input
t
PLH
Output
500 Ω
500 Ω
LOAD CIRCUIT
1.5 V
t
su
1.5 V1.5 V
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
1.5 V1.5 V
1.5 V1.5 V
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
t
h
S1
t
PHL
6 V
GND
2.7 V
0 V
2.7 V
0 V
2.7 V
0 V
V
V
Open
OH
OL
Input
Output
Control
(low-level
enabling)
Output
Waveform 1
S1 at 6 V
(see Note B)
Output
Waveform 2
S1 at GND
(see Note B)
TESTS1
t
pd
t
PLZ/tPZL
t
PHZ/tPZH
1.5 V1.5 V
VOLTAGE WAVEFORMS
PULSE DURATION
t
PZL
t
PZH
VOLTAGE WAVEFORMS
ENABLE AND DISABLE TIMES
t
w
1.5 V
1.5 V
Open
6 V
GND
1.5 V1.5 V
t
PLZ
VOL + 0.3 V
t
PHZ
VOH – 0.3 V
2.7 V
0 V
2.7 V
0 V
3 V
V
OL
V
OH
0 V
NOTES: A. CL includes probe and jig capacitance.
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, ZO = 50 Ω, tr ≤ 2.5 ns, tf ≤ 2.5 ns.
D. The outputs are measured one at a time with one transition per measurement.
E. t
F. t
G. t
PLZ
PZL
PLH
and t
and t
and t
are the same as t
PHZ
are the same as ten.
PZH
are the same as tpd.
PHL
dis
Figure 3. Load Circuit and Voltage Waveforms
10
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
.
IMPORTANT NOTICE
T exas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue
any product or service without notice, and advise customers to obtain the latest version of relevant information
to verify, before placing orders, that information being relied on is current and complete. All products are sold
subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those
pertaining to warranty, patent infringement, and limitation of liability.
TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
TI deems necessary to support this warranty . Specific testing of all parameters of each device is not necessarily
performed, except those mandated by government requirements.
CERT AIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOL VE POTENTIAL RISKS OF
DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL
APPLICATIONS”). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR
WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER
CRITICAL APPLICA TIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERST OOD TO
BE FULLY AT THE CUSTOMER’S RISK.
In order to minimize risks associated with the customer’s applications, adequate design and operating
safeguards must be provided by the customer to minimize inherent or procedural hazards.
TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent
that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other
intellectual property right of TI covering or relating to any combination, machine, or process in which such
semiconductor products or services might be or are used. TI’s publication of information regarding any third
party’s products or services does not constitute TI’s approval, warranty or endorsement thereof.
Copyright 1999, Texas Instruments Incorporated
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