LTC1314/LTC1315
PCMCIA Switching Matrix
with Built-In N-Channel
V
CC
Switch Drivers
FEATURES
s
s
s
s
s
s
s
s
s
DESCRIPTIO
Output Current Capability: 120mA
External 12V Regulator Can Be Shut Down
Built-In N-Channel V
CC
Switch Drivers
Digital Selection of 0V, V
CCIN
, VPP
IN
or Hi-Z
3.3V or 5V V
CC
Supply
Break-Before-Make Switching
0.1µA Quiescent Current in Hi-Z or 0V Mode
No VPP
OUT
Overshoot
Logic Compatible with Standard PCMCIA Controllers
The LTC
®
1314/LTC1315 provide the power switching
necessary to control Personal Computer Memory Card
International Association (PCMCIA) Release 2.0 card slots.
When used in conjunction with a PC card interface control-
ler, these devices form a complete minimum component
count interface for palmtop, pen-based and notebook
computers.
The LTC1314/LTC1315 provide 0V, 3.3V, 5V, 12V and
Hi-Z power output for flash VPP programming. A built-in
charge pump produces 12V of gate drive for inexpensive
N-channel 3.3V/5V V
CC
switching. The 12V regulator can
be shut down when 12V is not required at VPP
OUT
. All
digital inputs are TTL compatible and interface directly
with industry standard PC card interface controllers.
The LTC1314 is available in 14-pin SO and the LTC1315 in
24-pin SSOP.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATI
s
s
s
s
s
S
Notebook Computers
Palmtop Computers
Pen-Based Computers
Handi-Terminals
Bar-Code Readers
TYPICAL APPLICATION
DEVICE
Linear Technology PCMCIA Product Family
DESCRIPTION
SINGLE PCMCIA VPP DRIVER/REGULATOR
DUAL PCMCIA VPP DRIVER/REGULATOR
DUAL PCMCIA SWITCH MATRIX
PROTECTED V
CC
5V/3.3V SWITCH MATRIX
PROTECTED V
CC
AND VPP SWITCH MATRIX
PACKAGE
8-PIN SO
16-PIN SO*
14-PIN SO
24-PIN SSOP
8-PIN SO
16-PIN SO*
Typical PCMCIA Single Slot Driver
3.3V OR 5V
12V
STEP-UP
REGULATOR
LT
®
1301
V
OUT
SHDN
V
IN
C
OUT
5V
VPP
IN
V
DD
SHDN
VPP
OUT
LTC1314
DRV5
V
CCIN
DRV3
GND
VPP1
VPP2
PCMCIA
CARD SLOT
LT1312
LT1313
LTC1315
LTC1470
LTC1472
LTC
®
1314 SINGLE PCMCIA SWITCH MATRIX
+
*NARROW BODY
PCMCIA
CARD SLOT
CONTROLLER
5V
0.1µF
LTC1314 Truth Table
EN0
0
0
EN1
0
1
0
1
X
X
X
X
V
CC0
X
X
X
X
1
0
0
1
V
CC1
X
X
X
X
0
1
0
1
VPP
OUT
GND
V
CCIN
VPP
IN
Hi-Z
X
X
X
X
DRV3
X
X
X
X
1
0
0
0
DRV5
X
X
X
X
0
1
0
0
EN0
EN1
V
CC0
V
CC1
+
1µF
V
CC
LTC1314 • TA01
1
1
X
X
3.3V
X
X
X = DON’T CARE
U
U
UO
1
LTC1314/LTC1315
ABSOLUTE
AXI U
RATI GS
Digital Input Voltage ................................... 7V to – 0.3V
Operating Temperature Range .................... 0°C to 70°C
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
VPP
IN
to GND ........................................ 13.2V to – 0.3V
V
DD
to GND ................................................. 7V to – 0.3V
V
CCIN
to GND .............................................. 7V to – 0.3V
VPP
OUT
to GND...................................... 13.2V to – 0.3V
PACKAGE/ORDER I FOR ATIO
ORDER PART
NUMBER
TOP VIEW
VPP
IN
1
NC 2
SHDN 3
EN0 4
EN1 5
V
CC0
6
V
CC1
7
14 V
CCIN
13 NC
12 VPP
OUT
11 GND
10 V
DD
9
8
DRV3
DRV5
LTC1314CS
S PACKAGE
14-LEAD PLASTIC SO
T
JMAX
= 125°C,
θ
JA
= 110°C/W
Consult factory for Industrial and Military grade parts.
ELECTRICAL CHARACTERISTICS
V
DD
= 5V, V
CCIN
= 5V, VPP
IN
= 12V, T
A
= 25°C unless otherwise specified.
SYMBOL
V
CCIN
VPP
IN
V
DD
I
CC
I
PP
I
DD
PARAMETER
Input Voltage Range
Input Voltage Range
Supply Voltage Range
V
CCIN
Supply Current, No Load
VPP
IN
Supply Current, No Load
V
DD
Supply Current, No Load
CONDITIONS
q
q
q
I
IN
I
OUT
R
ON
V
INH
V
INL
Input Current: EN0, EN1, V
CC0
or V
CC1
High Impedance Output Leakage Current
On Resistance, VPP
OUT
= VPP
IN
On Resistance, VPP
OUT
= V
CCIN
On Resistance, VPP
OUT
= GND
Input High Voltage, Digital Inputs
Input Low Voltage, Digital Inputs
VPP
OUT
= VPP
IN
, V
CCIN
, 0V or Hi-Z
VPP
OUT
= VPP
IN
, V
CCIN
VPP
OUT
= 0V, Hi-Z
VPP
OUT
= VPP
IN
or V
CCIN
VPP
OUT
= 0V or Hi-Z
VPP
OUT
= 0V or Hi-Z, DRV3 or DRV5 On
0V < V
IN
< V
DD
EN0 = EN1 = 5V, 0V < VPP
OUT
< 12V
VPP
IN
= 12V, I
LOAD
= 120mA
V
CCIN
= 5V, I
LOAD
= 5mA
V
DD
= 5V, I
SINK
= 1mA
2
U
U
W
W W
U
W
TOP VIEW
AVPP
IN
ASHDN
AEN0
AEN1
AV
CC0
AV
CC1
BVPP
IN
BSHDN
BEN0
1
2
3
4
5
6
7
8
9
24 AV
CCIN
23 AVPP
OUT
22 GND
21 V
DD
20 ADRV3
19 ADRV5
18 BV
CCIN
17 BVPP
OUT
16 GND
15 V
DD
14 BDRV3
13 BDRV5
ORDER PART
NUMBER
LTC1315CG
BEN1 10
BV
CC0
11
BV
CC1
12
G PACKAGE
24-LEAD PLASTIC SSOP
T
JMAX
= 125°C,
θ
JA
= 95°C/W
q
q
q
q
q
q
q
q
q
q
q
q
q
LTC1314/LTC1315
MIN
TYP
MAX
3
5.5
0
12.6
4.5
5.5
0.1
1
15
40
0.1
1
60
120
0.1
10
85
200
±1
0.1
10
0.55
1.2
2
5
100
250
2
0.8
UNITS
V
V
V
µA
µA
µA
µA
µA
µA
µA
µA
Ω
Ω
Ω
V
V
LTC1314/LTC1315
ELECTRICAL CHARACTERISTICS
SYMBOL
V
OH
V
OL
V
G
-V
DD
t
ON
t
OFF
t
1
t
2
t
3
t
4
t
5
t
6
t
7
PARAMETER
SHDN Output High Voltage
SHDN Output Low Voltage
Gate Voltage Above Supply
Turn-On Time, DRV3 and DRV5
Turn-Off Time, DRV3 and DRV5
Delay + Rise Time
Delay + Rise Time
Delay + Rise Time
Delay + Fall Time
Delay + Fall Time
Delay + Fall Time
Output Turn-On Delay
V
DD
= 5V, V
CCIN
= 5V, VPP
IN
= 12V, T
A
= 25°C unless otherwise specified.
LTC1314/LTC1315
MIN
TYP
MAX
3.5
0.4
6
7
13
50
150
500
3
10
30
5
15
50
5
15
50
5
15
50
2
6
20
15
50
150
10
25
100
5
15
50
UNITS
V
V
V
µs
µs
µs
µs
µs
µs
µs
µs
µs
CONDITIONS
VPP
OUT
= V
CCIN
, 0V or Hi-Z, I
LOAD
= 400µA
VPP
OUT
= VPP
IN
, I
SINK
= 400µA
V
DRV3
or V
DRV5
C
GATE
= 1000pF, Time for V
GATE
> V
DD
+ 1V
C
GATE
= 1000pF, Time for V
GATE
< 0.5V
VPP
OUT
= GND to V
CCIN
, VPP
IN
= 0V, Note 1
VPP
OUT
= GND to VPP
IN
(Note 1)
VPP
OUT
= V
CCIN
to VPP
IN
(Note 1)
VPP
OUT
= VPP
IN
to V
CCIN
(Note 3)
VPP
OUT
= VPP
IN
to GND (Note 2)
VPP
OUT
= V
CCIN
to GND, VPP
IN
= 0V (Note 2)
VPP
OUT
= Hi-Z to VPP
IN
or V
CCIN
(Notes 1, 6)
q
q
q
The
q
denotes specifications which apply over the full operating
temperature range.
Note 1:
To 90% of the final value, C
OUT
= 0.1µF, R
OUT
= 2.9k.
Note 2:
To 10% of the final value, C
OUT
= 0.1µF, R
OUT
= 2.9k.
Note 3:
To 50% of the initial value, C
OUT
= 0.1µF, R
OUT
= 2.9k.
Note 4:
Measured current data is per channel.
Note 5:
Input logic low equal to 0V, high equal to 5V.
Note 6:
VPP
IN
= 0V when switching from Hi-Z to V
CCIN
.
TYPICAL PERFORMANCE CHARACTERISTICS
Switch On Resistance vs
Temperature
3.0
2.7
SWITCH ON RESISTANCE (Ω)
DRV3/DRV5 OUTPUT VOLTAGE (V)
2.4
2.1
1.8
1.5
1.2
0.9
0.6
0.3
0
–50 –30
V
CC
SWITCH
SUPPLY CURRENT (µA)
VPP SWITCH
30
–10 10
50
TEMPERATURE (°C)
U W
70
90
1314/15 G01
Supply Current vs Temperature
75
70
65
60
55
50
45
40
35
30
25
–50 –30
30
–10 10
50
TEMPERATURE (°C)
70
90
VPP
OUT
= V
CCIN
VPP
IN
= 12V
VPP
OUT
= VPP
IN
= 12V
DRV3/DRV5 Output Voltage vs
Temperature
14.2
14.0
13.8
13.6
13.4
13.2
13.0
–50 –30
30
50
–10 10
TEMPERATURE (°C)
70
90
1314/15 G02
1314/15 G03
3
LTC1314/LTC1315
TYPICAL PERFORMANCE CHARACTERISTICS
I
DD
vs V
DD
80
70
60
VPP
IN
= 12V
V
CCIN
= 5V
T = 25°C
VPP
OUT
= VPP
IN
IPP
IN
(µA)
I
DD
(µA)
50
40
30
20
10
0
0
1
2
PIN FUNCTIONS
LTC1314
VPP
IN
(Pin 1):
12V Power Input.
NC (Pin 2):
Not Connected.
SHDN (Pin 3):
Shutdown Output. When the output is high,
the external 12V regulator can be shut down to conserve
power consumption.
EN0, EN1 (Pins 4, 5):
Logic inputs that control the voltage
output on VPP
OUT
. The input thresholds are compatible
with TTL/CMOS levels. Refer to Truth Table.
V
CC0
(Pin 6):
Logic input that controls the state of the
MOSFET gate driver DRV3. ESD protection device limits
input excursions to 0.6V below ground.
V
CC1
(Pin 7):
Logic input that controls the state of the
MOSFET gate driver DRV5. ESD protection device limits
input excursions to 0.6V below ground.
DRV5, DRV3 (Pins 8, 9):
Gate driver outputs that control
the external MOSFETs that switch the V
CC
pin of card slot
to Hi-Z, 3.3V, or 5V.
V
DD
(Pin 10):
Positive Supply, 4.5V
≤
V
DD
≤
5.5V. This pin
supplies the power to the control logic and the charge
pumps and must be continuously powered.
GND (Pin 11):
Ground Connection.
VPP
OUT
(Pin 12):
Switched output that provides 0V, 3.3V,
5V, 12V, or Hi-Z to the VPP pin of the card slot. Refer to
Truth Table.
NC (Pin 13):
Not Connected.
V
CCIN
(Pin 14):
5V or 3.3V Power Input.
4
U W
3
IPP
IN
vs VPP
IN
20
18
16
14
12
10
8
6
4
VPP
OUT
= 0V
OR HI-Z
4
5
6
V
DD
(V)
1314/15 G04
V
DD
= V
CCIN
= 5V
T = 25°C
VPP
OUT
= VPP
IN
VPP
OUT
= V
CCIN
VPP
OUT
= V
CCIN
VPP
OUT
= 0V
OR HI-Z
0
2
4
8
6
VPP
IN
(V)
10
12
14
2
0
1314/15 G05
U
U
U
LTC1314/LTC1315
PIN FUNCTIONS
LTC1315
VPP
IN
(Pins 1, 7):
12V Power Inputs.
SHDN (Pins 2, 8):
Shutdown Outputs. When the output is
high, the external 12V regulator can be shut down to
conserve power consumption.
EN0, EN1 (Pins 3, 4, 9, 10):
Logic inputs that control the
voltage output on VPP
OUT
. The input thresholds are
compatible with TTL/CMOS levels. Refer to the Truth
Table.
V
CC0
(Pins 5, 11):
Logic inputs that control the state of the
MOSFET gate driver DRV3. ESD protection device limits
input excursions to 0.6V below ground.
V
CC1
(Pins 6, 12):
Logic inputs that control the state of the
MOSFET gate driver DRV5. ESD protection device limits
input excursions to 0.6V below ground.
DRV5, DRV3 (Pins 13, 14, 19, 20):
Gate driver outputs
that control the external MOSFETs that switch the V
CC
pin
of card slot to Hi-Z, 3.3V, or 5V.
V
DD
(Pins 15, 21):
Positive Supplies, 4.5V
≤
V
DD
≤
5.5V.
These pins supply the power to the control logic and the
charge pumps and must be continuously powered.
GND (Pins 16, 22):
Ground Connections.
VPP
OUT
(Pins 17, 23):
Switched outputs that provide 0V,
3.3V, 5V, 12V, or Hi-Z to the VPP pin of the card slot. Refer
to the Truth Table.
V
CCIN
(Pins 18, 24):
5V or 3.3V Power Inputs.
BLOCK DIAGRAM
EN0
TTL TO CMOS
CONVERTER
BREAK-BEFORE-
MAKE SWITCHES
OSCILLATOR
AND BIAS
V
CCIN
GATE CHARGE
AND DISCHARGE
CONTROL LOGIC
CHARGE
PUMP
EN1
TTL TO CMOS
CONVERTER
VPP
IN
+
GATE CHARGE
CONTROL LOGIC
10V
VPP
OUT
–
W
U
U
U
LTC1314 or 1/2 LTC1315
SHDN
VPP
IN
GATE CHARGE
AND DISCHARGE
CONTROL LOGIC
CHARGE
PUMP
GND
V
CC0
TTL TO CMOS
CONVERTER
DRV3
GATE CHARGE
AND DISCHARGE
CONTROL LOGIC
DRV5
V
CC1
TTL TO CMOS
CONVERTER
OSCILLATOR AND
CHARGE PUMP
OUTPUT
SWITCHES
LTC1314 • BD
5
FPGA/CPLD
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
