Datasheet

CY7C1525KV18
CY7C1512KV18
CY7C1514KV18
Document Number: 001-00436 Rev. *R Page 24 of 34
AC Electrical Characteristics
Over the Operating Range
Parameter
[26]
Description Test Conditions Min Typ Max Unit
V
IH
Input HIGH voltage V
REF
+ 0.2 – – V
V
IL
Input LOW voltage – – V
REF
– 0.2 V
Capacitance
Parameter
[27]
Description Test Conditions Max Unit
C
IN
Input capacitance T
A
= 25 C, f = 1 MHz, V
DD
= 1.8 V, V
DDQ
= 1.5 V 4 pF
C
O
Output capacitance 4pF
Thermal Resistance
Parameter
[27]
Description Test Conditions
165-ball FBGA
Package
Unit

JA
(0 m/s) Thermal resistance
(junction to ambient)
Socketed on a 170 × 220 × 2.35 mm, eight-layer printed
circuit board
14.43 °C/W

JA
(1 m/s) 13.40 °C/W

JA
(3 m/s) 12.66 °C/W

JB
Thermal resistance
(junction to board)
11.38 °C/W

JC
Thermal resistance
(junction to case)
3.30 °C/W
AC Test Loads and Waveforms
Figure 5. AC Test Loads and Waveforms
1.25V
0.25V
R = 50
5pF
INCLUDING
JIG AND
SCOPE
ALL INPUT PULSES
DEVICE
R
L
= 50
Z
0
= 50
V
REF
= 0.75V
V
REF
= 0.75V
[28]
0.75V
UNDER
TEST
0.75V
DEVICE
UNDER
TEST
OUTPUT
0.75V
V
REF
V
REF
OUTPUT
ZQ
ZQ
(a)
SLEW RATE= 2 V/ns
RQ =
250

(b)
RQ =
250

Notes
26. Overshoot: V
IH(AC)
< V
DDQ
+ 0.85 V (Pulse width less than t
CYC
/2), Undershoot: V
IL(AC)
> –1.5 V (Pulse width less than t
CYC
/2).
27. Tested initially and after any design or process change that may affect these parameters.
28. Unless otherwise noted, test conditions are based on signal transition time of 2 V/ns, timing reference levels of 0.75 V, Vref = 0.75 V, RQ = 250 , V
DDQ
= 1.5 V, input
pulse levels of 0.25 V to 1.25 V, and output loading of the specified I
OL
/I
OH
and load capacitance shown in (a) of Figure 5.