Datasheet

 2002-2012 Microchip Technology Inc. DS21456D-page 5
TC7109/A
TC
FS
Scale Factor Temperature Coefficient — 1 5 V/°C V
IN
= 408.9mV = >7770
8
Reading, Ext Ref = 0ppm/°C
I
+
Supply Current (V+ to GND) — 700 1500 AV
IN
= 0V, Crystal Oscillator
3.58MHz Test Circuit
I
S
Supply Current (V+ to V-) — 700 1500 A Pins 2-21, 25, 26, 27, 29 Open
V
REF
Reference Out Voltage -2.4 -2.8 -3.2 V Referenced to V+, 25k
Between V+ and Ref Out
TC
REF
Ref Out Temperature Coefficient — 80 — ppm/°C 25k Between V+ and Ref Out
0°C T
A
 +70°C
Digital
V
OH
Output High Voltage
I
OUT
= 700A
3.5 4.3 — V TC7109: I
OUT
= 100A
Pins 3 -16, 18, 19, 20
TC7109A: I
OUT
= 700A
V
OL
Output Low Voltage — 0.2 0.4 AI
OUT
= 1.6mA
Output Leakage Current — ±0.01 ±1 A Pins 3 -16 High-Impedance
Control I/O Pull-up Current — 5 — F Pins 18, 19, 20 V
OUT
= V+ – 3V
Mode Input at GND
Control I/O Loading — — 50 pF HBEN
, Pin 19; LBEN, Pin 18
V
IH
Input High Voltage 2.5 — — V Pins 18 -21, 26, 27
Referenced to GND
V
IL
Input Low Voltage — — 1 V Pins 18-21, 26, 27
Referenced to GND
Input Pull-up Current —
—
5
25
—
—
A
A
Pins 26, 27; V
OUT
= V+ – 3V
Pins 17, 24; V
OUT
= V+ – 3V
Input Pull-down Current — 1 — A Pins 21, V
OUT
= GND = +3V
Oscillator Output Current, High — 1 — mA V
OUT
– 2.5V
Oscillator Output Current, Low — 1.5 — mA V
OUT
– 2.5V
Buffered Oscillator Output Current High — 2 — mA V
OUT
– 2.5V
Buffered Oscillator Output Current Low — 5 — mA V
OUT
– 2.5V
t
W
Mode Input Pulse Width 60 — — nsec
HANDLING PRECAUTIONS: These devices are CMOS and must be handled correctly to prevent damage. Package
and store only in conductive foam, antistatic tubes, or other conducting material. Use proper antistatic handling pro-
cedures. Do not connect in circuits under “power-on” conditions, as high transients may cause permanent damage.
TC7109/TC7109A ELECTRICAL SPECIFICATIONS (Continued)
Electrical Characteristics: All parameters with V+ = +5V, V- = -5V, GND = 0V, T
A
= +25°C, unless otherwise indicated.
Symbol Parameter Min Typ Max Unit Test Conditions
Note 1: Input voltages may exceed supply voltages if input current is limited to ±100A.
2: Connecting any digital inputs or outputs to voltages greater than V+ or less than GND may cause destructive device
latch-up. Therefore, it is recommended that inputs from sources other than the same power supply should not be applied
to the TC7109A before its power supply is established. In multiple supply systems, the supply to the device should be
activated first.
3: This limit refers to that of the package and will not occur during normal operation.