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This version: NMoSvC. 11919672A
Previous version: Jul. 1996
MSC1162A
40-Bit Vacuum Fluorescent Display Tube Grid/Anode Driver
GENERAL DESCRIPTION
The MSC1162A is a monolithic IC designed for directly driving the grid and anode of the vacuum
fluorescent display tube. The device contains a 40-bit bidirectional shift register, a 40-bit latch
circuit, and 40-output circuit on a single chip.
Display data is serially stored in the shift register at the rising edge of a clock pulse.
Setting the CL pin low allows all the driver outputs to be driven low, which makes it possible to
set the display blanking.
Also, setting both of the CL and CHG pins high allows all the driver outputs to be driven high,
which provides the easy testing of all lights after final assembly of a VFD tube panel.
The MSC1162A is compatible with the MSC1162.
FEATURES
• Logic Supply Voltage (VCC) : 5V
• Driver Supply Voltage (VHV): 65V
• Driver Output Current
IOHVH1 (Only one driver output : "H") : –40mA
IOHVH2 (All the driver outputs : "H") : –2mA
IOHVL:1mA
• Directly connected to VFD tube without pull-down resistors
• Data Transfer Speed: 4MHz
• Package :
60-pin plastic SSOP (SSOP60-P-700-0.65-BK) (Product name : MSC1162AGS-BK)
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MSC1162A
FUNCTIONAL DESCRIPTION
Function Table
Shift register
Input
Shift Register Parallel Out
CLK R/L DIN PO1 PO2
PO39
XX
Not changed
H L L PO1n
PO38n
H H H PO1n
PO38n
L
L
PO2n
PO3n
PO40n
L
H
PO2n
PO3n
PO40n
X: Don't Care
PO1n to PO40n : PO1 to PO40 data just before CLOCK rises.
PO40
PO39n
PO39n
L
H
Output
DOUT
Not changed
PO40
PO40
PO1
PO1
Latch
Input Shift Register Parallel Out
LS POm
IX
HL
HH
X: Don't Care, m: 1 to 40
Latch Output
Om
Not changed
L
H
Driver output
Input
Latch Output
CL CHG
Om
LX
HH
X
X
HL
L
HL
H
X: Don't Care, m: 1 to 40
Driver Output
HVOm
L
H
L
H
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