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Schottky Bipolar 8210
TTL-TO-MOS LEVEL SHIFTER AND
HIGH VOLTAGE CLOCK DRIVER
• Four Low Voltage Drivers
• One High Voltage Driver
• TTL and
OTl
Compatible Inputs
• Outputs Compatible
with
8107A MOS Memories
• Operates from Standard Bipolar and
MOS Power Supplies
• Maximum MOS Device Protection -
Output Clamp Diodes
The I
ntel®821
0
is
a Bipolar-to-MOS level shifter and high voltage driver which accepts
TTL
and
DTL
inputs.
It
contains
four
(4)
low
voltage drivers and one high voltage driver,
each
with
current driving capabilities
suitable
for
driving N-channel MOS memory devices. The
8210
is
particularly suitable
for
driving
the
8107A
N-channel MOS memory chips. The
8210
operates
from
the 5
volt
and 12
volt
power supplies
used
to
bias
the memory devices.
The
four
low
voltage drivers feature
two
common enable inputs per pair
of
drivers which permits address
or
data decoding. The high voltage driver swings the
12
volts required
to
drive the
chip
enable (clock)
input
for
the 8107A.
The 8210 high voltage driver requires
an
externally connected
PNP
transistor. The
PNP
base
is
connected
to
pin 12, the collector
to
pin 11, and the emitter
to
pin 10 or
Voo
. The
use
of
a fast switching, high vol-
tage, high current gain PNP, like the 2N5057
is
recommended.
PIN
CONFIGURATION
LOGIC SYMBOL
°1
DATA
INPUT D
7
18
Vee
ENABLE INPUT E
A
2
17
D
1
DATA
INPUT
E
A
DATA
INPUT
02
3
16
0
1
LOW
VOLTAGE OUTPUT
D
2
0
1
DATA
INPUT D
3
4
15
O
2
LOW VOLTAGE OUTPUT
D
3
°2
ENABLE INPUT E
B
5
8210
14
0
3
LOW
VOLTAGE OUTPUT
E
B
°3
DATA
INPUT 0
4
6
13
0
4
LOW
VOLTAGE OUTPUT
0
4
0
4
DATA
INPUT
05
7
12
B BASE OF
PNP
D
7
B
DATA
INPUT
06
8
11
0
5
HIGH VOLTAGE OUTPUT
D
5
GND
9
10
V
oo
0
5
°6
5-95