Standard Products
UT54ACTQ16374
RadHard CMOS 16-bit D Flip-Flop TTL Inputs, and
Three-State Outputs
Datasheet
May 16, 2012
www.aeroflex.com/radhard
FEATURES
PIN DESCRIPTION
16 non-inverting D flip-flops with three-state outputs
Guaranteed simultaneously switching noise level and dy-
namic threshold performance
Buffered positive edge-triggered clock
Separate control logic for each byte
Pin Names
Description
OEn
CPn
Output Enable Input (Active Low)
Clock Pulse Input
Inputs
I0-I15
O0-O15
Guaranteed pin-to-pin output skew
Outputs
TM
0.6m Commercial RadHard CMOS
- Total dose: 100K rad(Si)
- Single Event Latchup immune
LOGIC SYMBOL
2
- SEU Onset LET >95 MeV -cm /mg
High speed, low power consumption
Output source/sink 24mA
Standard Microcircuit Drawing 5962-06245
- QML compliant part
OE1
CP1
(1)
EN2
(48)
C1
EN4
OE2 (24)
CP2 (25)
C3
Package:
(47)
(2)
- 48-lead flatpack, 25 mil pitch (.390 x .640)
O0
I0
2
1D
(46)
I1
(3)
(5)
(6)
(8)
O1
O2
O3
O4
DESCRIPTION
(44)
I2
(43)
I3
The 16-bit wide UT54ACTQ16374 D flip-flop is built using
TM
(41)
I4
Aeroflex’s Commercial RadHard epitaxial CMOS technolo-
(40)
I5
(9)
(11)
(12)
(13)
(14)
(16)
(17)
gy and is ideal for space applications. This high-speed, low pow-
er UT54ACTQ16374 D flip-flop is designed for bus oriented
applications. A buffered clock (CP) and Output Enable (OE) are
common to each byte and can be shorted together for full 16-bit
operation. The UT54ACTQ16374 are particularly suitable for
implementing buffer registers, I/O ports, bidirectional bus driv-
ers and working registers. Each flip-flop will store the state of
their indivdual D inputs (In) that meet the setup and hold re-
quirements on the low-to-high clock (CPn) transition. With the
Output Enable (OEn) low, the contents of the flip-flops are avail-
able at the output. When OEn is high, the outputs go to high
impedancestate. OperationofOEninputdoesnotaffectthestate
of the D flip-flops.
O5
O6
(38)
I6
(37)
I7
O7
(36)
I8
3D
4
O8
O9
(35)
I9
(33)
I10
O10
O11
O12
(32)
I11
(19)
(20)
(22)
(23)
(30)
I12
(29)
I13
O13
O14
(27)
I14
(26)
I15
O15
1