Table of Contents
Advertisement
Model 545A
SPECIFICATIONS
Specifications for the 545A Logic Probe are given in Table 1.
Table 1. HP 545A Logic Probe Specifications
Input Current: s15
!J.A
(source or sink)
Input Capacitance: s15 pF
Page 5
Logic Thresholds: *TTL: Logic ONE
2.0
+
0.4, -0.2 Vdc
Logic ZERO
0.8
+
0.2, -0.3 Vdc
CMOS: Logic ONE
0.7 x V supply ±0.5 Vdc
Logic ZERO
0.3 x Ysupply ±0.5 Vdc
Input Minimum Pulse Width: 10 ns with ground lead (typically 20 ns without ground lead)
Input Maximum Pulse Repetition Frequency: TTL: 80 MHz; CMOS: 40 MHz.
Input Overload Protection: ±120V continuous (de to 1kHz); ±250V for 15 seconds (de to 1 kHz)
Pulse Memory: Indicates first entry into new valid logic level: also indicates return to initial valid
level from bad level for pulse .2:1 !J.Sec wide.
Power Requirements: TTL: 4.5 to 15 Vdc
CMOS: 3 to 18 Vdc
Maximum Current: 70 mA
Overload Protection: ±25 Vdc for 1 minute
Temperature: 0° to 55°C
Weight: 113.4 g (4 oz) net; Shipping Weight: 170 g (6 oz)
Size: Probe body, 15.24 em (6 in); Cable, 119.38 em (47 in)
Accessories Included: Ground Wire, HP Part No. 00545-60105
Tip Cover, HP Part No. 00547-40005
Three Grabber Squeeze Connectors HP No. 10230-62101
Accessories Available: Tip Kit, HP Part No. 00545-60104
*+5 Vdc power supply; usable to +15 Vdc with slightly increased thresholds.
Advertisement
Table of Contents
