DESCRIPTION
FEATURES
■Differential D, clock and Q
■Extended 100E VEE range of –4.2V to –5.5V
■VBB output for single-ended use
■1100MHz min. toggle frequency
■Edge-triggered asynchronous set and reset
■Fully compatible with Motorola MC10E/100E431
■Available in 28-pin PLCC package
The SY10/100E431 are 3-bit flip-flops with differential
clock, data input and data output.
The asynchronous Set and Reset controls are edge-
triggered rather than level controlled. This allows the user
to rapidly set or reset the flip-flop and then continue
clocking at the next clock edge without the necessity of
de-asserting the set/reset signal (as would be the case
with a level controlled set/reset).
The E431 is also designed with larger internal swings,
an approach intended to minimize the time spent crossing
the threshold region and thus reduces the metastability
susceptibility window.
3-BIT DIFFERENTIAL
FLIP-FLOP
SY10E431
SY100E431
FINAL
BLOCK DIAGRAM
Pin Function
D[0:2], D[0:2] Differential Data Inputs
CLK[0:2], CLK[0:2] Differential Clock Inputs
S[0:2] Edge Triggered Set Inputs
R[0:2] Edge Triggered Reset Inputs
VBB VBB Reference Output
Q[0:2], Q[0:2] Differential Data Outputs
VCCO VCC to Output
PIN NAMES
PIN CONFIGURATION
DnCLKnRnSnQn
LZ L L L
HZ L L H
XL Z L L
XL L Z H
TRUTH TABLE(1)
NOTE:
1. Z = LOW-to-HIGH transition.
1Rev.: D Amendment: /0
Issue Date:
November 2002
2
SY10E431
SY100E431
Micrel
VEE = VEE (Min.) to VEE (Max.); VCC = VCCO = GND
TA = 0°CTA = +25°CTA = +85°C
Symbol Parameter Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit Condition
VBB Output Reference Voltage V—
10E –1.38 — –1.27 –1.35 — –1.25 –1.31 — –1.19
100E –1.38 — –1.26 –1.38 — –1.26 –1.38 — –1.26
IIH Input HIGH Current — — 150 — — 150 — — 150 µA—
IEE Power Supply Current mA —
10E — 110 132 — 110 132 — 110 132
100E — 110 132 — 110 132 — 127 152
VCMR Common Mode Range –1.5 — 0 –1.5 — 0 –1.5 — 0 V 1
NOTES:
1. VCMR is referenced to the most positive side of the differential input signal. Normal operation is obtained when the input signals are within the VCMR range
and the input swing is greater than VPP (min.) and <1V.
2. Specification for packaged product only.
DC ELECTRICAL CHARACTERISTICS(2)
VEE = VEE (Min.) to VEE (Max.); VCC = VCCO = GND
TA = 0°CTA = +25°CTA = +85°C
Symbol Parameter Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit Condition
fMAX Max. Toggle Frequency 1100 1400 — 1100 1400 — 1100 1400 — MHz —
tPLH Propagation Delay to Output ps —
tPHL CLK (Diff) 450 600 750 450 600 750 450 600 750
CLK (SE) 400 600 800 400 600 800 400 600 800
R 550 725 925 550 725 925 550 725 925
S 550 725 925 550 725 925 550 725 925
tSSet-up Time ps
D 200 0 — 200 0 — 200 0 —
R 1000 700 — 1000 700 — 1000 700 — 1
S 1000 700 — 1000 700 — 1000 700 — 1
tHHold Time, D 200 0 — 200 0 — 200 0 — ps —
tPW Minimum Pulse Width, CLK 400 — — 400 — — 400 — — ps —
tskew Within-Device Skew — 50 — — 50 — — 50 — ps 2
VPP (AC) Minimum Input Swing 150 — — 150 — — 150 — — mV 3
trRise/Fall Time 275 450 650 275 450 650 275 450 650 ps —
tf20% to 80%
NOTES:
1. These set-up times define the minimum time the CLK or SET/RESET input
must wait after the assertion of the RESET/SET input to assure the proper
operation of the flip-flop.
2. Within-device skew is defined as identical transitions on similar paths
through a device.
3. Minimum input swing for which AC parameters are guaranteed.
4. Specification for packaged product only.
AC ELECTRICAL CHARACTERISTICS(4)
PRODUCT ORDERING CODE
Ordering Package Operating
Code Type Range
SY10E431JI J28-1 Industrial
SY10E431JITR* J28-1 Industrial
SY100E431JI J28-1 Industrial
SY100E431JITR* J28-1 Industrial
*Tape and Reel
3
SY10E431
SY100E431
Micrel
28 LEAD PLCC (J28-1)
Rev. 03
4
SY10E431
SY100E431
Micrel
MICREL, INC. 1849 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL + 1 (408) 944-0800 FAX + 1 (408) 944-0970 WEB http://www.micrel.com
This information is believed to be accurate and reliable, however no responsibility is assumed by Micrel for its use nor for any infringement of patents or
other rights of third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent right of Micrel, Inc.
© 2002 Micrel, Incorporated.
