CD4724BMS Datasheet, PDF (1/10 Pages) Intersil Corporation – CMOS 8-Bit Addressable Latch

CD4724BMS
December 1992
CMOS 8-Bit Addressable Latch
Features
Pinout
• High Voltage Type (20V Rating)
• Serial Data Input
• Active Parallel Output
• Storage Register Capability
• Master Clear
• Can Function as Demultiplexer
• Standardized Symmetrical Output Characteristics
• 100% Tested for Quiescent Current at 20V
• Maximum Input Current of 1µA at 18V Over Full Pack-
age Temperature Range; 100nA at 18V and +25^oC
• Noise Margin (Over Full Package/Temperature Range)
- 1V at VDD = 5V
- 2V at VDD = 10V
- 2.5V at VDD = 15V
A0 1
A1 2
A2 3
Q0 4
Q1 5
Q2 6
Q3 7
VSS 8
CD4724BMS
TOP VIEW
16 VDD
15 RESET
14 WRITE DISABLE
13 DATA
12 Q7
11 Q6
10 Q5
9 Q4
• 5V, 10V and 15V Parametric Ratings
Functional Diagram
• Meets All Requirements of JEDEC Tentative Standard
No. 13B, “Standard Specifications for Description of
‘B’ Series CMOS Devices”
Applications
14
WRITE DISABLE
13
DATA
• Multi-line Decoders
• A/D Converters
Description
1
A0
8
2
A1
DECODER
3
A2
CD4724BMS 8-bit addressable latch is a serial-input, parallel-
output storage register that can perform a variety of functions.
Data are inputted to a particular bit in the latch when that bit is
addressed (by means of inputs A0, A1, A2) and when WRITE
DISABLE is at a low level. When WRITE DISABLE is high, data
entry is inhibited; however, all 8 outputs can be continuously
read independent of WRITE DISABLE and address inputs.
RESET
VDD = 16
VSS = 8
4
Q0
5
Q1
6
Q2
7
Q3
9
Q4
10
Q5
11 _Q6
12 _Q7
A master RESET input is available, which resets all bits to a
logic “0” level when RESET and WRITE DISABLE are at a high
level. When RESET is at a high level, and WRITE DISABLE is
at a low level, the latch acts as a 1-of-8 demultiplexer; the bit
that is addressed has an active output which follows that data
input, while all unaddressed bits are held to a logic “0” level.
The CD4724BMS is supplied in these 16-lead outline pack-
ages:
Braze Seal DIP
Frit Seal DIP
Ceramic Flatpack
H4W
H1F
H6W
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Copyright © Intersil Corporation 1999
7-1267
File Number 3348