100354 Datasheet, PDF (1/9 Pages) Fairchild Semiconductor – Low Power 8-Bit Register with Cut-Off Drivers

October 1989
Revised August 2000
100354
Low Power 8-Bit Register with Cut-Off Drivers
General Description
The 100354 contains eight D-type edge triggered, master/
slave flip-flops with individual inputs (D_n), true outputs (Q_n),
a clock input (CP), an output enable pin (OEN), and a com-
mon clock enable pin (CEN). Data enters the master when
CP is LOW and transfers to the slave when CP goes HIGH.
When the CEN input goes HIGH it overrides all other
inputs, disables the clock, and the Q outputs maintain the
last state.
A Q output follows its D input when the OEN pin is LOW. A
HIGH on OEN holds the outputs in a cut-off state. The cut-
off state is designed to be more negative than a normal
ECL LOW level. This allows the output emitter-followers to
turn off when the termination supply is −2.0V, presenting a
high impedance to the data bus. This high impedance
reduces termination power and prevents loss of low state
noise margin when several loads share the bus.
The 100354 outputs are designed to drive a doubly termi-
nated 50Ω transmission line (25Ω load impedance). All
inputs have 50 kΩ pull-down resistors.
Features
s Cut-off drivers
s Drives 25Ω load
s Low power operation
s 2000V ESD protection
s Voltage compensated operating range = −4.2V to −5.7V
s Available to industrial grade temperature range
Ordering Code:
Order Number Package Number
Package Description
100354PC
N24E
24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-010, 0.400 Wide
100354QC
V28A
28-Lead Plastic Lead Chip Carrier (PLCC), JEDEC MO-047, 0.450 Square
100354QI
V28A
28-Lead Plastic Lead Chip Carrier (PLCC), JEDEC MO-047, 0.450 Square
Industrial Temperature Range (−40°C to +85°C)
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbol
Connection Diagrams
24-Pin DIP
Pin Descriptions
Pin Names
Description
D₀–D₇
CEN
Data Inputs
Clock Enable Input
CP
Clock Input (Active Rising Edge)
OEN
Output Enable Input
Q₀–Q₇
Data Outputs
© 2000 Fairchild Semiconductor Corporation DS010610
28-Pin PLCC
www.fairchildsemi.com