LTC1314_15 Datasheet, PDF (1/12 Pages) Linear Technology – PCMCIA Switching Matrix with Built-In N-Channel VCC Switch Drivers

LTC1314/LTC1315
PCMCIA Switching Matrix
with Built-In N-Channel
V_CC Switch Drivers
FEATURES
s _{Output Current Capability: 120mA}
s _{External 12V Regulator Can Be Shut Down}
s _{Built-In N-Channel VCC Switch Drivers}
s _{Digital Selection of 0V, VCCIN, VPPIN or Hi-Z}
s _{3.3V or 5V VCC Supply}
s _{Break-Before-Make Switching}
s _{0.1µA Quiescent Current in Hi-Z or 0V Mode}
s _{No VPPOUT Overshoot}
s _{Logic Compatible with Standard PCMCIA Controllers}
APPLICATI S
s _{Notebook Computers}
s _{Palmtop Computers}
s _{Pen-Based Computers}
s _{Handi-Terminals}
s _{Bar-Code Readers}
DESCRIPTIO
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.
TYPICAL APPLICATION
Typical PCMCIA Single Slot Driver
3.3V OR 5V
12V
+
V_IN
STEP-UP
REGULATOR
LT^®1301
V_{OUT SHDN}
C_OUT
5V
VPP_IN
V_DD
SHDN
PCMCIA
CARD SLOT
CONTROLLER
VPP_OUT
LTC1314
EN0
EN1
DRV5
VPP1
5V
0.1µF ^VPP2
PCMCIA
CARD SLOT
V_CC0
V_CCIN
V_CC1
DRV3
GND
+
1µF
V_CC
LTC1314 • TA01
3.3V
Linear Technology PCMCIA Product Family
DEVICE DESCRIPTION
LT1312 SINGLE PCMCIA VPP DRIVER/REGULATOR
LT1313 DUAL PCMCIA VPP DRIVER/REGULATOR
LTC^®1314 SINGLE PCMCIA SWITCH MATRIX
LTC1315 DUAL PCMCIA SWITCH MATRIX
LTC1470 PROTECTED V_CC 5V/3.3V SWITCH MATRIX
LTC1472 PROTECTED V_CC AND VPP SWITCH MATRIX
*NARROW BODY
PACKAGE
8-PIN SO
16-PIN SO*
14-PIN SO
24-PIN SSOP
8-PIN SO
16-PIN SO*
LTC1314 Truth Table
EN0
EN1
V_CC0
V_CC1 VPP_OUT DRV3 DRV5
0
0
X
X
GND
X
X
0
1
X
X
V_CCIN
X
X
1
0
X
X
VPP_IN
X
X
1
1
X
X
Hi-Z
X
X
X
X
1
0
X
1
0
X
X
0
1
X
0
1
X
X
0
0
X
0
0
X
X
1
1
X
0
0
X = DON’T CARE
1